Houser, P. R., De Lannoy, G., and Walker, J. P. 2009. Land Surface Data Assimilation, In: Lahoz, W., Khatattov, B. and Menard, R. (Eds.), Data Assimilation: Making sense of observations, Springer, The Netherlands, In Press Xpp. (pdf XXkb)

Grayson, R. B., Western, A. W., Walker, J. P., Kandel, D. D., Costelloe, J. F. and Wilson, D. J., 2006. Controls on Patterns of Soil Moisture in Arid and Semi-Arid Systems, In: P. D’Ordorico and A. Porporato (Eds.), Ecohydrology of Arid and Semi-Arid Ecosystems, Springer, The Netherlands, 341pp. (pdf 1.6Mb)

Walker, J. P. and Houser, P. R., 2005. Hydrologic Data Assimilation, In: A. Aswathanarayana (Ed.), Advances in Water Science Methodologies, A.A. Balkema, The Netherlands, 230pp. (pdf 696kb)

Mladenova, I., Lakshmi, V., Walker, J. P., Long, D., and De Jeu, R., 2009. An Assessment of QuickSCAT Ku Band Scatterometer Data for Soil Moisture Sensitivity. Geoscience and Remote Sensing Letters, In Press

de Jeu, R. A. M., Holmes, T. R. H., Panciera, R. and Walker, J. P., 2009. Parameterization of the Land Parameter Retrieval Model for L-band Observations using the NAFE’05 Dataset Geoscience and Remote Sensing Letters, In Press

Merlin, O., Walker, J. P., Panciera, R., Escorihuela, M. J. and Jackson, T., 2009. Assessing the SMOS Soil Moisture Retrieval Parameters with High-resolution NAFE'06 Data. Geoscience and Remote Sensing Letters, In Press

Summerell, G., Shoemark, V., Grant, S., and Walker, J. P., 2009. Using Passive Microwave Response to Soil Moisture Change for Soil Mapping: A Case Study for the Livingstone Creek Catchment. Geoscience and Remote Sensing Letters, In Press

Panciera, R. and Walker, J. P., 2009. Improved Understanding of Soil Surface Roughness Parameterization for L-band Passive Microwave Soil Moisture Retrieval. Geoscience and Remote Sensing Letters, In Press

Draper, C. S., Mahfouf, J. -F. and Walker, J. P., 2009. An EKF Assimilation of AMSR-E Soil Moisture into the ISBA Land Surface Scheme, Journal of Geophysical Research - Atmospheres, 114, D20104, doi:10.1029/2008JD011650 Copyright 2009 American Geophysical Union. Further reproduction or electronic distribution is not permitted.(pdf 4.8Mb)

Merlin, O., Bitar, A., Walker, J. P. and Kerr, Y., 2009. A Sequential Model for Disaggregating Near-Surface Soil Moisture Observations Using Multi-Resolution Thermal Sensors. Remote Sensing of Environment, 113(10): 2275-2284. Copyright 2009 Elsevier Science Ltd. (pdf 835kb)

Saleh, K., Kerr, Y., Richaume, P., Escorihuela, M., Panciera, R., Delwart, S., Boulet, G., Maisongrande, P., Walker, J. P., Wursteisen, P. and Wigneron, J. P., 2009. Soil Moisture Retrievals at L-band Using a Two-Step Inversion Approach (COSMOS/NAFE'05 Experiment). Remote Sensing of Environment, 113(6): 1304-1312. Copyright 2009 Elsevier Science Ltd. (pdf 658kb)

Panciera, R., Walker, J. P., Kalma, J. D., Kim, E. J., Saleh, K. and Wigneron, J. -P., 2009. Evaluation of the SMOS L-MEB Passive Microwave Soil Moisture Retrieval Algorithm. Remote Sensing of Environment, 113(2): 435-444, doi:10.1016/j.rse.2008.10.010. Copyright 2009 Elsevier Science Ltd. (pdf 1.4Mb).

Draper, C. S., Walker, J. P., Steinle, P. J., de Jeu, R. A. M. and Holmes, T. R. H., 2009. An Evaluation of AMSR-E Derived Soil Moisture Over Australia. Remote Sensing of Environment, 113:703-710, doi:10.1016/j.rse.2008.11.011. Copyright 2009 Elsevier Science Ltd. (pdf 1.4Mb).

Merlin, O., Walker, J. P., Kalma, J. D., Kim, E., Hacker, J., Panciera, R., Young, R., Summerell, G., Hornbuckle, J., Hafeez, M., and Jackson, T., 2008. The NAFE'06 Data Set: Towards Soil Moisture Retrieval at Intermediate Resolution. Advances in Water Resources, 31(11):1444-1455. doi:10.1016/j.advwatres.01.018 Copyright 2008 Elsevier Science Ltd. (pdf 2.4Mb).

Parinusa, R. M., de Jeu, R. A. M., Holmes, T. R. H., and Walker, J. P. 2008. Comparison of Microwave and Infrared Land Surface Temperature Products over the NAFE’06 Research Sites. Geoscience and Remote Sensing Letters, 4(5):783-787, doi:10.1109/LGRS.2008.2005738. Copyright 2008 IEEE. (pdf 1.3MB)

Escorihuela, M. J., Saleh, K., Richaume, P., Merlin, O., Walker, J. P. and Kerr, Y. H., 2008. Sunglint Observations Over Land From Ground and Airborne L-band Radiometer Data. Geophysical Research Letters, 35(20), L20406, doi:10.1029/2008GL035062. Copyright 2008 American Geophysical Union. Further reproduction or electronic distribution is not permitted. (pdf 623kB)

Merlin, O., Walker, J. P., Chehbouni, A., and Kerr, Y. H., 2008. Towards Deterministic Downscaling of SMOS Soil Moisture Using MODIS Derived Soil Evaporative Efficiency. Remote Sensing of Environment, 112(10): 3935-3946. Copyright 2008 Elsevier Science Ltd. (pdf 1.3MB)

Merlin, O., Chehbouni, A., Walker, J. P., Panciera, R. and Kerr, Y. H., 2008. A Simple Method to Dissagregate Passive-Microwave-Based Soil Moisture. IEEE Transactions on Geoscience and Remote Sensing, 46(3), doi:10.11.09/TGRS.2007.914807. Copyright 2008 IEEE. (pdf 800kB)

Panciera, R., Walker, J. P., Kalma, J. D., Kim, E. J., Hacker, J., Merlin, O. and Berger, M., 2008. The NAFE'05/CoSMOS Dataset: Towards SMOS Soil Moisture Retrieval, Downscaling and Assimilation. IEEE Transactions on Geoscience and Remote Sensing, 46(3), doi:10.1109/TGRS.2007.915403. Copyright 2008 IEEE. (pdf 1.3MB)

Turner, M. R. J., Walker, J. P. and Oke, P. R., 2008. Ensemble Member Generation for Sequential Data Assimilation. Remote Sensing of Environment, 112, doi:10.1016/j.rse.2007.02.042. Copyright 2008 Elsevier Science Ltd. (pdf 899kb).

Pipunic, R., Walker, J. P. and Western, A. W., 2008. Assimilation of Remotely Sensed Data for Improved Latent and Sensible Heat Flux Prediction: A Comparative Synthetic Study. Remote Sensing of Environment, 112, doi:10.1016/j.rse.2007.02.038. Copyright 2008 Elsevier Science Ltd. (pdf 683kb).

Teuling, A. J., Uijlenhoet, R., Hurkmans, R., Merlin, O., Panciera, R., Walker, J. P. and Troch, P. A., 2007. Dry-end Surface Soil Moisture Variability During NAFE'06. Geophysical Research Letters, 34, doi:10.1029/207GL031001. Copyright 2007 American Geophysical Union. Further reproduction or electronic distribution is not permitted. (pdf 354kB)

Rudiger, C, Hancock, G. R., Hemakumara, H. M., Jacobs, B., Kalma, J. D., Martinez, C., Thyer, M., Walker, J. P., Wells, T. and Willgoose, G. R., 2007. Goulburn River Experimental Catchment Data Set. Water Resources Research, 43, W10403, doi:10.1029/2006WR005837.Copyright 2007 American Geophysical Union. Further reproduction or electronic distribution is not permitted. (pdf 766kB)

Dong, J., Walker, J. P., Houser, P. R. and Sun, C., 2007. Scanning Multichannel Microwave Radiometer Snow Water Equivalent Assimilation. Journal of Geophysical Research - Atmospheres, 112, D07108, doi:10.1029/2006JD007209. Copyright 2007 American Geophysical Union. Further reproduction or electronic distribution is not permitted. (pdf 4.1MB)

Ni-Meister, W., Houser, P. R. and Walker, J. P., 2006. Soil Moisture Initialization for Climate Prediction: Assimilation of Scanning Multifrequency Microwave Radiometer Soil Moisture Data into a Land Surface Model. Journal of Geophysical Research - Atmospheres, 111, D20102, doi:10.1029/2006JD007190. Copyright 2006 American Geophysical Union. Further reproduction or electronic distribution is not permitted. (pdf 8.7MB)

Ellett, K. M., Walker, J. P., Western, A. W. and Rodell, M., 2006. A Framework for Assessing the Potential of Remote-Sensed Gravity to Provide New Insight on the Hydrology of the Murray-Darling Basin. Australian Journal of Water Resources, 10(2), 89-101. (pdf 980kb)

Savige, C., French, A.N., Western, A.W., Walker, J.P., Abuzar, M., Hacker, J.M., and Kalma, J.D., 2006. Remote Sensing Estimates of Actual Evapotranspiration in an Irrigation District at a Range of Scales. Australian Journal of Water Resources, 10(2): 207-212.

Walker, J. P. and Willgoose, G. R., 2006. A Comparative Study of Australian Cartometric and Photogrammetric Digital Elevation Model Accuracy. Photogrammetric Engineering and Remote Sensing, 72(7). (pdf 2.69Mb)

Zhan, X., Houser, P. R., Walker, J. P. and Crow, W., 2006. A Method for Retrieving High Resolution Surface Soil Moisture from Hydros L-Band Radiometer and Radar Observations. IEEE Transactions on Geoscience and Remote Sensing, 44(6):1534-1544, doi:10.1109/TGRS.2005.863319. Copyright 2006 IEEE (pdf 1.47MB)

Dong, J., Walker, J. P. and Houser, P. R., 2005. Factors Affecting Remotely Sensed Snow Water Equivalent Uncertainty. Remote Sensing of Environment, 97(1): 68-82, doi:10.1016/j.rse.2005.04.010. Copyright 2005 Elsevier Science Ltd. (pdf 1.8Mb).

Ni-Meister, W., Walker, J. P. and Houser, P. R., 2005. Soil Moisture Initialization for Climate Prediction: Characterization of Model and Observation Errors. Journal of Geophysical Research - Atmospheres, 110, D13111, doi:10.1029/2004JD005745. Copyright 2005 American Geophysical Union. Further reproduction or electronic distribution is not permitted. (pdf 5.54MB)

Wealands, S. R., Grayson, R. B. and Walker, J. P., 2005. Quantitative Comparison of Spatial Patterns for Hydrological Model Assessment - Some Promising Approaches. Advances in Water Resources, 28(1): 15-32. Copyright 2004 Elsevier Science Ltd. (pdf 564kb).

Foster, J. L., Sun, C., Walker, J. P., Kelly, R. J., Chang, A. T. C., Dong, J. and Powell, H., 2005. Quantifying the Uncertainty in Passive Microwave Snow Water Equivalent Observations. Remote Sensing of Environment, 94(2): 187-203. Copyright 2005 Elsevier Science Ltd. (pdf 1.4Mb).

Walker, J. P. and Houser, P. R., 2004. Requirements of a Global Near-Surface Soil Moisture Satellite Mission: Accuracy, Repeat Time, and Spatial Resolution. Advances in Water Resources, 27:785-801. doi:10.1016/j.advwatres.2004.05.006 Copyright 2004 Elsevier Science Ltd. (pdf 1.16Mb).

Walker, J. P., Houser, P. R. and Willgoose, G. R., 2004. Active Microwave Remote Sensing for Soil Moisture Measurement: A Field Evaluation Using ERS-2. Hydrological Processes, 18:1975-1997. doi:10.1002/hyp.1343 (pdf 385kB).

Walker, J. P., Willgoose, G. R. and Kalma, J. D., 2004. In-Situ Measurement of Soil Moisture: A Comparison of Techniques. Journal of Hydrology, 293:85-99. doi:10.1016/j.hydrol.20004.10.008 Copyright 2004 Elsevier Science Ltd. (pdf 577kB).

Sun, C., Walker, J. P. and Houser, P. R., 2004. A Methodology for Snow Data Assimilation in a Land Surface Model. Journal of Geophysical Research - Atmospheres, 109, D08108, doi:10.1029/2003JD003765. Copyright 2004 American Geophysical Union. Further reproduction or electronic distribution is not permitted. (pdf 1.19MB)

Rodell, M., Houser, P. R., Jambor, U., Gottschalck, J., Mitchell, K., Meng, C.-J., Arsenault, K., Cosgrove, B., Radakovich, J., Bosilovich, M., Entin, J. K., Walker, J. P., Lohmann D. and Toll, D., 2004. The Global Land Data Assimilation System. Bulletin of the American Meteorological Society, 85(3):381-394. Copyright 2004 American Meteorologcal Society. (pdf 2.16MB)

Walker, J. P., Houser, P. R. and Reichle, R. H., 2003. New Remote Sensing Technologies Require Advances in Hydrologic Data Assimilation. EOS, Transactions American Geophysical Union, 84(49): 545,551. Copyright 2003 American Geophysical Union. Further reproduction or electronic distribution is not permitted. (pdf 377kB)

Berg, A. A., Famiglietti, J. S., Walker, J. P. and Houser, P. R., 2003. Impact of Bias Correction to Reanalysis Products on Simulations of North American Soil Moisture and Hydrological Fluxes. Journal of Geophysical Research - Atmospheres, 108(D16), 4490, doi:10.1029/2002JD003334. Copyright 2003 American Geophysical Union. Further reproduction or electronic distribution is not permitted. (pdf 856kB)

Wooldridge, S. A., Kalma, J. D. and Walker, J. P., 2003. Importance of Soil Moisture Measurements for Inferring Parameters in Hydrologic Models of Low-Yielding Ephemeral Catchments. Environmental Modelling and Software, 18(1): 35-48. Copyright 2003 Elsevier Science Ltd. (pdf 681kB).

Walker, J. P., Willgoose, G. R. and Kalma, J. D., 2002. Three-Dimensional Soil Moisture Profile Retrieval by Assimilation of Near-Surface Measurements: Simplified Kalman Filter Covariance Forecasting and Field Application. Water Resources Research, (12), 1301, doi:10.1029/2002WR001545. Copyright 2003 American Geophysical Union. Further reproduction or electronic distribution is not permitted. (pdf 1.48MB)

Reichle, R. H., Walker, J. P., Koster, R. D. and Houser, P. R., 2002. Extended vs. Ensemble Kalman Filtering for Land Data Assimilation. Journal of Hydrometeorology, 3(6): 728-740. Copyright 2001 American Meteorologcal Society. (pdf 278kB)

Walker, J. P. and Houser, P. R., 2002. Evaluation of the OhmMapper Instrument for Soil Moisture Measurement. Soil Science Society of America Journal, 66(3): 728-734. Copyright 2002 Soil Science Society of America (pdf 139kB)

Walker, J. P., Willgoose, G. R. and Kalma, J. D., 2001. The Nerrigundah Data Set: Soil Moisture Patterns, Soil Characteristics and Hydrological Flux Measurements. Water Resources Research, 37(11): 2653-2658. Copyright 2001 American Geophysical Union. Further reproduction or electronic distribution is not permitted. (pdf 274kB)

Owe, M., de Jeu, R. and Walker, J. P., 2001. A Methodology for Surface Soil Moisture and Vegetation Optical Depth Retrieval Using the Microwave Polarization Difference Index. IEEE Transactions on Geoscience and Remote Sensing, 39(8): 1643-1654. Copyright 2001 IEEE. (pdf 240kB)

Walker, J. P. and Houser, P. R., 2001. A Methodology for Initializing Soil Moisture in a Global Climate Model: Assimilation of Near-Surface Soil Moisture Observations. Journal of Geophysical Research - Atmospheres, 106(D11): 11761-11774. Copyright 2001 American Geophysical Union. Further reproduction or electronic distribution is not permitted. (pdf 5.36MB)

Walker, J. P., Willgoose, G. R. and Kalma, J. D., 2001. One-Dimensional Soil Moisture Profile Retrieval by Assimilation of Near-Surface Measurements: A Simplified Soil Moisture Model and Field Application. Journal of Hydrometeorology, 2(4): 356-373.Copyright 2001 American Meteorologcal Society. (pdf 278kB)

Walker, J. P., Willgoose, G. R. and Kalma, J. D., 2001. One-Dimensional Soil Moisture Profile Retrieval by Assimilation of Near-Surface Observations: A Comparison of Retrieval Algorithms. Advances in Water Resources. 24(6): 631-650. Copyright 2001 Elsevier Science Ltd. (pdf 570kB).

Walker, J. P. and Willgoose, G. R., 1999. On the Effect of Digital Elevation Model Accuracy on Hydrology and Geomorphology. Water Resources Research, 35(7): 2259-2268. Copyright 1999 American Geophysical Union. Further reproduction or electronic distribution is not permitted.(pdf 969kB)

Chai, S. -S., Walker, J. P., Makarynskyy, O., Kuhn, M., Veenendaal, B. and West, B. Use of Soil Moisture Variability in Artificial Neural Network Retrieval of Soil Moisture. Remote Sensing, In Review

Merlin, O., Walker, J. P., Hornbuckle, J., Boulet, G. and Jackson, T. J. Estimating Vegetation Temperature Using Combined Shortwave, Thermal and Microwave Data. Geoscience and Remote Sensing Letters, In Review

Smith, A. B., Chiew, F .H. S., Ellett, K. M., Grayson, R. B., Pipunic, R. C., Richter, H., Shoemark, V., Siriwidena, L., Summerell, G., Walker, J. P., Western, A. W. and Young, R. I., The Murrumbidgee Soil Moisture Monitoring Network Data Set. Water Resources Research, In Review

Chai, S. -S., Veenendaal, B., West, G. and Walker, J. P. Passive Microwave for Soil Moisture Retrieval Using Neural Network: Is Ancillary Data Needed ? Geoscience and Remote Sensing Letters, In Review

*Mladenova, I., Lakshmi, V., Walker, J. P., Panciera, R., Wagner, W. and Dubovsca, M. Validation of the ASAR Global Monitoring Mode Soil Moisture Product Using the NAFE05 Data Set. Transaction on Geoscience and Remote Sensing, In Review

Rudiger, C., Western, A. W., Walker, J. P., Smith, A. B., Kalma, J. D., and Willgoose, G. R. Towards a General Equation for Frequency Domain Reflectometers. Journal of Hydrology, In Review

Mladenova, I., Lakshmi, V., Jackson, T., Walker, J. P., Merlin, O. and de Jeu, R. A. M. Validation of AMSR-E Soil Moisture Using L-band Airborne Radiometer Data from the National Airborne Field Experiment 2006 (NAFE'06). IEEE Transactions on Geoscience and Remote Sensing, In Review

*Grant, J.P., Van de Griend, A.,A., Wigneron, J,-P., Saleh, K., Panciera, R., and Walker, J. P., On the Influence of Forest Cover Fraction on L-band Soil Moisture Retrieval from Heterogeneous Pixels using Multi-Angular Observations. Remote Sensing of Environment, In Review

Zhang, Y., Leuning, R., Hutley, L. B., Beringer, J., McHugh, I., and Walker, J. P., Use of Long-term Water Balances to Parameterize Surface Conductances for Estimating Regional Evaporation. Water Resources Research, In Review

*Rüdiger, C., Albergel, C., Mahfouf, J.-F., Calvet, J.-C, and Walker, J. P., Evaluation of Jacobians for Leaf Area Index Data Assimilation with an Extended Kalman Filter. Journal of Geophysical Research - Atmospheres, In Review

*Rudiger, C., Willgoose, G. R., Walker, J. P., and Kalma, J. D. Uncertainty in the Representativeness of Soil Moisture Point Observations Within a Semi-arid Catchment in SE Australia. Geophysical Research Letters, In Preparation.

Pipunic, R., Walker, J. P., Trudinger, C. and Western, A. W. Assimilating Multiple Data Observation Types into a Land Surface Model Using One-dimensional Field Observations as Proxy Satellite Observations. Journal of Hydrometeorology, In Preparation

Walker, J. P., Ursino, N., Grayson, R. B., and Houser, P. R. Initialization of Soil Moisture in a Global Climate Model: An Australian Case Study. Journal of Hydrology, In Preparation.

Walker, J. P., Grayson, R. B., Houser, P. R., Panciera, R. and Zhan, X. AMSR-E Validation in the Australian Arid Zone. Advances in Water Resources, In Preparation.

Walker, J. P. and Girard, C., Root Zone Soil Moisture Estimation From Surface Measurements at Two Times-of-Day. Journal of Hydrology, In Preparation.

Walker, J. P., Rudiger C., Allahmoradi, M., Peischl, S., Nan, Y., Ryu, D., and Kerr, Y., 2009. Australian Airborne Cal/Val Experiments for SMOS (AACES) 2009-2011: Experiment Plan. Department of Civil and Environmental Engineering, The University of Melbourne. xxpp (pdf xxMB)

Saleh, K., Kerr, Y. H., Escorihuela, M. J., Wigneron, J. P., Richaume, P., Boulet, G., Masiongrande, P., Panciera, R., Walker, J. P., Lopez-Baeza, E., Millan-Scheiding, C., and Juglea, S., 2009. Final Report ESA CoSMOS Data Analysis Study 2007-2008 (RFQ-3-11801/06/NL/FF). European Space Agency. 227pp (pdf 9.9MB)

Wealands, S., Stewardson, M., Gilvear, D., Hacker, J., Walker, J. P., Downes, B., and Rutherford, I., 2008. Remote Sensing of Rivers: A Potential Contribution to the Murray-Darling Basin Sustainable Rivers Audit. Department of Civil and Environmental Engineering, The University of Melbourne. 61pp (pdf 347kB)

O'Neill, P. M., Dehaan, R., Walker, J. P. and Hue, I., 2008. Improving the Airborne Remote Sensing of Soil Moisture: Estimating Soil Effective Temperature. Charles Sturt University. 29pp (pdf 803kB)

Barrett, D. J., Kuzmin, V. A., Walker, J. P., McVicar, T. R. and Draper, C. 2008. Improving Stream Flow Forecasting by Integrating Satellite Observations, In Situ Data and Catchment Models Using Model-Data Assimilation Methods. eWater Technical Report. eWater Cooperative Research Centre, Canberra. 59pp (pdf 3.3MB) Peer reviewed

Kuzmin, V. A., Seed, A. W. and Walker J. P. 2007. Australian Government Bureau of Meteorology Forecast and Real-time Observational Hydrometeorological Data for Hydrologic Forecasting. eWater Technical Report. eWater Cooperative Research Centre, Canberra. 29pp (pdf 1.9MB) Peer reviewed

Walker, J. P., Olivier, M. and Panciera, R., 2006. National Airborne Field Experiment 2006: Experiment Plan. Department of Civil and Environmental Engineering, The University of Melbourne. 124pp (pdf 7.9MB)

Walker, J. P. and Panciera, R., 2005. National Airborne Field Experiment 2005: Experiment Plan. Department of Civil and Environmental Engineering, The University of Melbourne. 105pp (pdf 12.1MB)

Walker, J. P., 1999. Estimating Soil Moisture Profile Dynamics From Near-Surface Soil Moisture Measurements and Standard Meteorological Data. PhD Thesis, Department of Civil, Surveying and Environmental Engineering, The University of Newcastle.

Walker, J. P., 1995. Accuracy of DEMs. Honours Thesis, Department of Civil, Surveying and Environmental Engineering, The University of Newcastle.

Walker, J. P., 2002. Soil Moisture Monitoring in the Goulburn River Catchment, Merriwa Landcare Newsletter. (pdf 91kB)

Houser, P. R., Rodell, M., Jambor, U., Gottschalck, J., Cosgrove, B., Radakovich, J., Arsenault, K., Bosilovich, M., Entin, J. K., Walker, J. P., Mitchell, K., Pan, H. L., and Meng, C.-J., 2001. The Global Land Data Assimilation System, GEWEX News, 11(2): 11-13. (pdf 2.41MB)

Chai, S.-S., Veenendaal, B., West, G. and Walker, J.P., 2009. Input Parameters Selection for Soil Moisture Retrieval Using an Artificial Neural Network. In Ostendorf, B., Baldock, P., Bruce, D., Burdett, M., and Corcoran, P., (eds) Surveying & Spatial Sciences Institute Biennial International Conference, Adelaide Sept 2009, pp. 1181-1194. (pdf 242kB)

Summerell, G., Wilford, J., Shoemark, V., Grant, S., and Walker, J.P., 2009. High Resolution Passive Microwave Response to Landscape Controls Influencing Soil Moisture Patterns: A Case Study for the Livingstone Creek Catchment. In Anderssen, R.S., R.D. Braddock and L.T.H. Newham (eds) 18th World IMACS Congress and MODSIM09 International Congress on Modelling and Simulation. Modelling and Simulation Society of Australia and New Zealand and International Association for Mathematics and Computers in Simulation, July 2009, pp. 2528-2533. (pdf 656kB)

Azcurra, C. and Walker, J.P., 2009. Towards SMOS Validation in South-eastern Australia. In Anderssen, R.S., R.D. Braddock and L.T.H. Newham (eds) 18th World IMACS Congress and MODSIM09 International Congress on Modelling and Simulation. Modelling and Simulation Society of Australia and New Zealand and International Association for Mathematics and Computers in Simulation, July 2009, pp. 3675-3681. (pdf 499kB)

Peischl, S., Walker, J.P., Allahmoradi, M., Barrett, D., Gurney, R., Kerr, Y., Kim, E. LeMarshall, J., Rüdiger, C., Ryu D., and Ye N., 2009. Towards Validation of SMOS Using Airborne and Ground Data Over the Murrumbidgee Catchment. In Anderssen, R.S., R.D. Braddock and L.T.H. Newham (eds) 18th World IMACS Congress and MODSIM09 International Congress on Modelling and Simulation. Modelling and Simulation Society of Australia and New Zealand and International Association for Mathematics and Computers in Simulation, July 2009, pp. 3733-3739. (pdf 576kB)

Rüdiger, C., Walker, J.P., Allahmoradi, M., Barrett, D., Costelloe, J., Gurney, R., Hacker, J., Kerr, Y.H., Kim, E., Le Marshall, J., Lieff, W., Marks, A., Peischl, S., Ryu, D., and Ye, N., 2009. Identification of Spaceborne Microwave Radiometer Calibration Sites for Satellite Missions. In Anderssen, R.S., R.D. Braddock and L.T.H. Newham (eds) 18th World IMACS Congress and MODSIM09 International Congress on Modelling and Simulation. Modelling and Simulation Society of Australia and New Zealand and International Association for Mathematics and Computers in Simulation, July 2009, pp. 3740-3746. (pdf 875kB)

Ye, N., Walker, J.P., Panciera, R., Ryu, D., Rüdiger, C., and Gurney, R.J., 2009. The Effect of Rock Cover Fraction on the Retrieval of Surface Soil Moisture at L-band. In Anderssen, R.S., R.D. Braddock and L.T.H. Newham (eds) 18th World IMACS Congress and MODSIM09 International Congress on Modelling and Simulation. Modelling and Simulation Society of Australia and New Zealand and International Association for Mathematics and Computers in Simulation, July 2009, pp. 3761-3767. (pdf 391kB)

Costelloe, J.F., Matic, V., Western, A.W., and Walker, J.P., 2009. Framework for Incorporating Spectral Observations into Steady State Analysis of Groundwater Discharge Around the Margins of the Great Artesian Basin. In Anderssen, R.S., R.D. Braddock and L.T.H. Newham (eds) 18th World IMACS Congress and MODSIM09 International Congress on Modelling and Simulation. Modelling and Simulation Society of Australia and New Zealand and International Association for Mathematics and Computers in Simulation, July 2009, pp. 3690-3696. (pdf 623kB)

Costelloe, J. F., Irvine, E. C., Western, A. W., Matic, V., Walker, J. P. and Tyler, M., 2008. Quantifying Near-surface Diffuse Groundwater Discharge Along the South-west Margin of the Great Artesian Basin, Proceedings of the Water Down Under 2008 incorporating 31st Hydrology and Water Resources Symposium and 4th International Conference on Water Resources and Environment Research [CD-ROM]. The Institute of Engineers Australia, Adelaide, Australia, 14-17 April, 2008, pp. 831-840. (pdf 484kB)

Walker, J. P., and 62 others, 2007. The National Airborne Field Experiment Data Sets. In Oxley, L. and Kulasiri, D. (eds) MODSIM 2007 International Congress on Modelling and Simulation. Modelling and Simulation Society of Australia and New Zealand, December 2007, pp. 2625-2631. ISBN : 978-0-9758400-4-7 (pdf 956kB)

Panciera, R., Walker, J. P., Kim, E., Kalma, J. and Merlin, O., 2007. Effect of Spatial Scale on Soil Moisture Retrieval From Passive Microwave Sensors. In Oxley, L. and Kulasiri, D. (eds) MODSIM 2007 International Congress on Modelling and Simulation. Modelling and Simulation Society of Australia and New Zealand, December 2007, pp. 2576-2582. ISBN : 978-0-9758400-4-7 (pdf 1.8MB)

Merlin, O., Walker, J. P., Panciera, R., Young, R., Kalma, J.D. and Kim, E.J., 2007. Calibration of a Soil Moisture Sensor in Heterogeneous Terrain with the National Airborne Field Experiment (NAFE) Data. In Oxley, L. and Kulasiri, D. (eds) MODSIM 2007 International Congress on Modelling and Simulation. Modelling and Simulation Society of Australia and New Zealand, December 2007, pp. 2604-2610. ISBN : 978-0-9758400-4-7 (pdf 773kB)

Draper, C. S., Walker, J. P. and Steinle, P. J., 2007. Remotely Sensed Soil Moisture Over Australia from AMSR-E. In Oxley, L. and Kulasiri, D. (eds) MODSIM 2007 International Congress on Modelling and Simulation. Modelling and Simulation Society of Australia and New Zealand, December 2007. ISBN : 978-0-9758400-4-7 (pdf 195kB)

Pipunic, R. C., Walker, J. P., Trudinger, C. and Western, A. W., 2007. Effect of One-Dimensional Field Data Assimilation on Land Surface Model Flux Estimates With Implications for Improved Numerical Weather Prediction. In Oxley, L. and Kulasiri, D. (eds) MODSIM 2007 International Congress on Modelling and Simulation. Modelling and Simulation Society of Australia and New Zealand, December 2007, pp. 1736-1742. ISBN : 978-0-9758400-4-7 (pdf 815kB)

Walker, J. P., Merlin, O., Panciera, R. and Kalma, J. D., 2006. National Airborne Field Experiments for Soil Moisture Remote Sensing, 30th Hydrology and Water Resources Symposium [CD-ROM]. The Institute of Engineers Australia, Launceston, Australia, 4-8 December, 2006. (pdf 592kB)

Panciera, R., Walker, J. P., Merlin, O., Kalma, J. D. and Kim, E. J., 2006. Scaling Properties of L-band Passive Microwave Soil Moisture: From SMOS to Paddock Scale, 30th Hydrology and Water Resources Symposium [CD-ROM]. The Institute of Engineers Australia, Launceston, Australia, 4-8 December, 2006. (pdf 317kB)

Maggioni, V., Panciera, R., Walker, J. P., Rinaldi, M. and Paruscio, V., 2006. A Multi-Sensor Approach for High Resolution Airborne Soil Moisture Mapping, 30th Hydrology and Water Resources Symposium [CD-ROM]. The Institute of Engineers Australia, Launceston, Australia, 4-8 December, 2006. (pdf 148kB)

Smith, A. B., Walker, J. P. and Western, A. W., 2006. Detection of a Soil Moisture and Groundwater Signal in Ground-Based Gravity Observations, 30th Hydrology and Water Resources Symposium [CD-ROM]. The Institute of Engineers Australia, Launceston, Australia, 4-8 December, 2006. (pdf 408kB) Best Paper

Lymburner, L., Hairsine, P. B., Walker, J. P. and Held, A. A., 2006. A Method to Identify Likely Sites for Denitrification in Semi-Arid Floodplain Rivers, 9th International River Symposium [CD-ROM]. Brisbane, Australia, 4-7 September, 2006. (pdf 116kB)

Walker, J. P., Hacker, J. M., Kalma, J. D., Kim, E. J. and Panciera, R., 2005. National Airborne Field Experiments for Prediction in Ungauged Basins. In A. Zerger and R. M. Argent (Eds), MODSIM 2005 International Congress on Modelling and Simulation. Modelling and Simulation Society of Australia and New Zealand, December 2005, 2974-2980. (pdf 832kB)

Savige, C., Western, A., Walker, J. P., Kalma, J. D., French, A. and Abuzar, M., 2005. Obtaining Surface Energy Fluxes from Remotely Sensed Data. In A. Zerger and R. M. Argent (Eds), MODSIM 2005 International Congress on Modelling and Simulation. Modelling and Simulation Society of Australia and New Zealand, December 2005, 2946-2952. (pdf 309kB)

Ellett, K., Walker, J. P., Rodell, M., Chen, J. and Western, A., 2005. GRACE Gravity Fields as a New Measure for Assessing Large-scale Hydrological Models. In A. Zerger and R. M. Argent (Eds), MODSIM 2005 International Congress on Modelling and Simulation. Modelling and Simulation Society of Australia and New Zealand, December 2005, 2911-2917. (pdf 403kB)

Wealands, S. R., Grayson, R. B. and Walker, J. P., 2005. Utilising Tolerances When Assessing Models Using Spatial Fields. In A. Zerger and R. M. Argent (Eds), MODSIM 2005 International Congress on Modelling and Simulation. Modelling and Simulation Society of Australia and New Zealand, December 2005, 2547-22553. (pdf 665kB)

Ruediger, C., Walker, J. P., Kalma, J. D., Willgoose, G. R. and Houser, P. R., 2005. Root Zone Soil Moisture Retrieval Using Streamflow and Surface Moisture Data Assimilation in Nested Catchments. In A. Zerger and R. M. Argent (Eds), MODSIM 2005 International Congress on Modelling and Simulation. Modelling and Simulation Society of Australia and New Zealand, December 2005, 1458-1464. (pdf 488kB)

Nguyen, H. T. and Walker, J. P., 2005. The Effect of Irrigation Schedules on Water Table Depth and Root Zone Soil Moisture. In A. Zerger and R. M. Argent (Eds), MODSIM 2005 International Congress on Modelling and Simulation. Modelling and Simulation Society of Australia and New Zealand, December 2005, 1286-1292. (pdf 348kB)

Turner, M., Walker, J. P., Oke, P. and Grayson R. B., 2005. Assimilation of Sea-surface Temperature into a Hydrodynamic Model of Port Phillip Bay, Australia, 2005 Coasts and Ports Australasian Conference [CD-ROM]. Adelaide, Australia, 21-23 September, 2005. (pdf 400kB)

Ellett, K. M., Walker, J. P., Western, A. W., Grayson, R. B., Smith, A. and Rodell, M., 2005. Can the GRACE Satellite Mission Help in the Murray-Darling Basin?, 29th Hydrology and Water Resources Symposium [CD-ROM]. The Institute of Engineers Australia, Canberra, Australia, 20-23 February, 2005. (pdf 347kB)

Smith, A. B., Walker, J. P., Western, A. W. and Ellett, K. M., 2005. Using Ground-Based Gravity Measurements to Monitor Changes in Terrestrial Water Storage, 29th Hydrology and Water Resources Symposium [CD-ROM]. The Institute of Engineers Australia, Canberra, Australia, 20-23 February, 2005. (pdf 290kB)

Savige, C. L., French, A. N., Western, A. W., Walker, J. P., Abuzar, M., Hacker, J. M. and Kalma, J. D., 2005. Remote Sensing Estimates of Evapotranspiration at a Range of Spatial Scales, 29th Hydrology and Water Resources Symposium [CD-ROM]. The Institute of Engineers Australia, Canberra, Australia, 20-23 February, 2005. (pdf 372kB)

Wealands, S. R., Grayson, R. B. and Walker, J. P., 2005. Using New Comparison Techniques to Assess the Spatial Predictions from Distributed Hydrological Models, 29th Hydrology and Water Resources Symposium [CD-ROM]. The Institute of Engineers Australia, Canberra, Australia, 20-23 February, 2005. (pdf 323kB)

Lymburner, L., Hairsine, P. B., Walker, J. P. and Held, A. A., 2004. Predicting the Recruitment of Large Woody Debris Throughout a Watershed, In: Lowrance, R. (Ed.), Proceedings of Riparian Ecosystems and Buffers: Multi-scale Structure, Function, and Management. American Water Resources Summer Specialty Conference, Olympic Valley, USA, 28-30 June, 2004. (pdf 227kB)

Lymburner, L., Hairsine, P. B., Walker, J. P. and Held, A. A., 2004. Predicting Riparian Zone Functions Using Remote Sensing, In: Lowrance, R. (Ed.), Proceedings of Riparian Ecosystems and Buffers: Multi-scale Structure, Function, and Management. American Water Resources Summer Specialty Conference, Olympic Valley, USA, 28-30 June, 2004. (pdf 219kB)

Wealands, S. R., Grayson, R. B. and Walker, J. P., 2004. Investigating Spatial Pattern Comparison Methods for Distributed Hydrological Model Assessment, In: C. Pahl, S. Schmidt and T. Jakeman(Ed.), Proceedings of iEMSs 2004 International Congress: Complexity and Integrated Resources Management. International Environmental Modelling and Software Society, Osnabrieck, Germany, 14-17 June, 2004, [CD-ROM]. (pdf 150 kB)

Walker, J. P., Ursino, N., Grayson, R. B., and Houser, P. R., 2003. Australian Root Zone Soil Moisture: Assimilation of Remote Sensing Observations, In: D. Post (Ed.), Proceedings of the International Congress on Modelling and Simulation (MODSIM). Modelling and Simulation Society of Australia and New Zealand, Inc., Townsville, Australia, 14-17 July, 2003, 1:380-385. (pdf 649 kB)

Lymburner, L., Hairsine, P. B., Held, A. A., and Walker, J. P., 2003. Indicies for Assessing the Spatial Distribution and Function of Riparian Buffer Zones, In: D. Post (Ed.), Proceedings of the International Congress on Modelling and Simulation (MODSIM). Modelling and Simulation Society of Australia and New Zealand, Inc., Townsville, Australia, 14-17 July, 2003, 1:350-355. (pdf 210 kB)

Rudiger, C., Davidson, R. E., Hemakumara, M., Walker, J. P., Kalma, J. D., Willgoose, G. R. and Houser, P. R., 2003. Catchment Monitoring for Scaling and Assimilation of Soil Moisture and Streamflow, In: D. Post (Ed.), Proceedings of the International Congress on Modelling and Simulation (MODSIM). Modelling and Simulation Society of Australia and New Zealand, Inc., Townsville, Australia, 14-17 July, 2003, 1:386-391. (pdf 513 kB)

Wealands, S., Grayson, R. B. and Walker, J. P., 2003. Hydrologic Model Assessment from Automated Spatial Pattern Comparison Techniques, In: D. Post (Ed.), Proceedings of the International Congress on Modelling and Simulation (MODSIM). Modelling and Simulation Society of Australia and New Zealand, Inc., Townsville, Australia, 14-17 July, 2003, 1:416-421. (pdf 227 kB)

Walker, J. P. and Houser, P. R., 2002. Soil Moisture Estimation Using Remote Sensing. 27th Hydrology and Water Resources Symposium [CD-ROM]. The Institute of Engineers Australia, Melbourne, Australia, 20 - 23 May, 2002, 8pp. (pdf 186 kB) animation (avi 8.1MB) (Slides)

Walker, J. P., Willgoose, G. R. and Kalma, J. D., 1999. Recent Advances in Profile Soil Moisture Retrieval. In: W. Boughton (Ed.), Proceedings of the Water 99 Joint Congress; 25th Hydrology and Water Resources Symposium; and 2nd International Conference on Water Resources and Environmental Research. The Institute of Engineers Australia, Brisbane, Australia, 6 - 8 July, 1999, 373-378. (pdf 237 kB)

Matic, V., Costelloe, J. F., Western A., and Walker J. P., 2008. Characterising the Spectral Signal of Discharge Zones at the Margin of the Great Artesian Basin. Proceedings of the 14th Australasin Remote Sensing and Photogrammetry Conference, Darwin, Australia, 30 Sept - 2 Oct, 2008. (pdf 225kB)

Walker J. P., Panciera, R., and Kim, E., 2008. High Resolution Airborne Soil Moisture Mapping. Proceedings of the 14th Australasin Remote Sensing and Photogrammetry Conference, Darwin, Australia, 30 Sept - 2 Oct, 2008. (pdf 195kB)

Chai, S. -S., Veenendaal, B., West, G., and Walker J. P., 2008. Backpropagation Neural Network for Soil Moisture Retrieval Using NAFE'05 Data: A Comparison of Training Algorithms. Proceedings of the International Society for Photogrammetry and Remote Sensing (ISPRS) XXIth Congress (Volume XXXVII, Part B4), Beijing, China, 3-11 July, 2008. (pdf 718kB)

Walker J. P., Panciera, R., and Kim E., 2008. High Resolution Airborne Soil Moisture Mapping. International Geoscience and Remote Sensing Symposium (IGARSS), Boston, USA, 7-11 July, 2008. (pdf 247kB)

Panciera, R., Walker J. P., Kim E., and Kalma, J., 2008. Application of a Bayesian Approach for Downscaling of SMOS Observations. International Geoscience and Remote Sensing Symposium (IGARSS), Boston, USA, 7-11 July, 2008. (pdf 271kB)

Grant, J. P., Wigneron, J. -P., Panciera, R., Saleh, K., Walker J. P., and Van de Griend, A. A., 2008. Influence of Forest Cover on L-band Soil Moisture Retrieval from Heterogeneous Pixels. International Geoscience and Remote Sensing Symposium (IGARSS), Boston, USA, 7-11 July, 2008. (pdf 102kB)

Chai, S. -S., Veenendaal, B., West, G., Walker J. P., and Metternicht, G., 2008. Explicit Inverse of Soil Moisture Retrieval with Artificial Neural Network Using Passive Microwave Remote Sensing. International Geoscience and Remote Sensing Symposium (IGARSS), Boston, USA, 7-11 July, 2008. (pdf 177kB)

Chai, S. -S., Veenendaal, B., West, G., Walker J. P., and Metternicht, G., 2008. Input Pattern According to Standard Deviation of Backpropogation Neural Network: Influence on the Accuracy for Soil Moisture Retrieval. International Geoscience and Remote Sensing Symposium (IGARSS), Boston, USA, 7-11 July, 2008. (pdf 232kB)

Saleh, K., Boulet, G., Kerr, Y. H., Massiongrande, P., Richaume, P., Wigneron, J., -P., Delwart, S., Panciera, R., and Walker J. P., 2008. Validation of the SMOS Level 2 Retrieval Algorithm Over Crops and Prairies From the CoSMOS-NAFE Campaign. International Geoscience and Remote Sensing Symposium (IGARSS), Boston, USA, 7-11 July, 2008. (pdf 76kB)

Mladenova, I., Lakshmi, V., Jackson, T., and Walker J. P., 2008. Ku-Band Sensitivity to Soil Moisture: An Evaluation Study for Monitoring Temporal Soil Moisture Change Detection Over the NAFE'06 Study Area. International Geoscience and Remote Sensing Symposium (IGARSS), Boston, USA, 7-11 July, 2008. (pdf 109kB)

Draper, C., Walker, J. P. and Steinle, P., 2008. An Evaluation of AMSR-E Soil Moisture Retrievals Over Australia, In: J. Walker, R. Pipunic, and C. Draper (Eds.), Proceedings of the 3rd International Workshop on Catchment-scale Hydrologic Modeling and Data Assimilation. Melbourne, Australia, 9-11 January, 2008. (pdf 1.4MB)

Merlin, O., Walker, J. P. and Teuling, R., 2008. Measurement Accuracy Versus Observation Scale In A Multi-Resolution Data Assimilation Framework, In: J. Walker, R. Pipunic, and C. Draper (Eds.), Proceedings of the 3rd International Workshop on Catchment-scale Hydrologic Modeling and Data Assimilation. Melbourne, Australia, 9-11 January, 2008. (pdf 815kB)

Panciera, R., Walker, J. P., Kim, E., Kalma, J., and Merlin, O., 2008. Multi-resolution Soil Moisture Retrieval from Passive Microwave Sensors: A Preliminary Study, In: J. Walker, R. Pipunic, and C. Draper (Eds.), Proceedings of the 3rd International Workshop on Catchment-scale Hydrologic Modeling and Data Assimilation. Melbourne, Australia, 9-11 January, 2008. (pdf 822kB)

Kuzmin, V., and Walker, J. P., 2008. The Stochastic Filter for Asymmetrically Distributed Streamflow, In: J. Walker, R. Pipunic, and C. Draper (Eds.), Proceedings of the 3rd International Workshop on Catchment-scale Hydrologic Modeling and Data Assimilation. Melbourne, Australia, 9-11 January, 2008. (pdf 393kB)

Pipunic, R., Walker, J. P. and Western, A., 2008. One-Dimensional Field Data Assimilation into a Land Surface Model for Improved Heat Flux Estimates, In: J. Walker, R. Pipunic, and C. Draper (Eds.), Proceedings of the 3rd International Workshop on Catchment-scale Hydrologic Modeling and Data Assimilation. Melbourne, Australia, 9-11 January, 2008. (pdf 1.1MB)

Boulet, G., Walker, J., Maisongrande, P., Saleh, K., Rüdiger, C., Gruhier, C., de Rosnay, P., Panciera, R., Merlin, O., Kalma, J. and Kerr, Y., 2008. Exploitation of the NAFE’05 Campaign for Cal/val Activities of the SMOS Mission. In: J. Walker, R. Pipunic, and C. Draper (Eds.), Proceedings of the 3rd International Workshop on Catchment-scale Hydrologic Modeling and Data Assimilation. Melbourne, Australia, 9-11 January, 2008. (pdf 659kB)

Walker, J. P., Barrett, D., Gurney, R., Kalma, J., Kerr, Y., Kim, E., and LeMarshall, J., 2007. MoistureMap: A Soil Moisture Monitoring, Prediction and Reporting System for Sustainable Land and Water Management, Proceedings of the First CAWCR Workshop: Physical Processes and Modelling of the Water and Carbon Cycle, BMRC Research Report No. 133, pg. 9-12. Melbourne, Australia, 27-29 November, 2007. (pdf 67kB) Invited

Draper, C. S., Walker, J. P., and Steinle, P.J., 2007. An Evaluation of Remotely Sensed Soil Moisture Over Australia, Proceedings of the First CAWCR Workshop: Physical Processes and Modelling of the Water and Carbon Cycle, BMRC Research Report No. 133, pg. 5-8. Melbourne, Australia, 27-29 November, 2007. (pdf 91kB) Invited

Saleh, K., Floricioiu D., Kerr Y. H., Boulet G., Maisongrande P., de Rosnay P., Wigneron J.-P., Cano A., López-Baeza E., Grant J., Balling J., Skou N., Berger M., Delwart S., Wursteisen P. and Walker J. P., 2007. The CoSMOS L-band Experiment in Southeast Australia. International Geoscience and Remote Sensing Symposium (IGARSS), Barcelona, Spain, 23-27 July, 2007. (pdf 356kB)

Stewardson, M., Walker, J. P., Kan, M., Kitchen, L., Hacker, J., Ghadirian, P. and Scholz, G., 2007. Using Airborne Scanners to Map Pools in Rivers, 5th Australian Stream Management Conference [CD-ROM]. Charles Sturt University Institute for Land, Water and Society, Albury, Australia, 22-25 May, 2007. (pdf 3.6MB)

Kim, E. J., Walker, J. P., Panciera, R. and Kalma, J. D., 2006. The Australian National Airborne Field Experiment 2005: Soil Moisture Remote Sensing at 60 Meter Resolution and Up. International Geoscience and Remote Sensing Symposium (IGARSS), Denver, United States, 31 July - 4 August, 2006.

Walker, J. P., 2005. Land Surface Model Data Assimilation for Atmospheric Prediction, Proceedings of the Hydrometeorological Applications of Weather and Climate Modelling Workshop, BMRC Research Report No. 111, pg. 111-114. Melbourne, Australia, 3-6 October, 2005. (pdf 284kB) Invited

Smith, A. B., Walker, J. P. and Western, A. W., 2004. Assimilation of Gravity Data into a Soil Moisture and Groundwater Column Model, Proceedings of the 2nd International Workshop on Catchment-scale Hydrologic Modeling and Data Assimilation. Princeton, USA, 25-27 October, 2004. (pdf 22kB)

Ellett, K. M., Walker, J. P., Western, A. W., Grayson, R. B. and Rodell, M., 2004. Assimilation of GRACE-type Observations to Improve Catchment-scale Hydrological Model Prediction in the Murray-Darling Basin, Proceedings of the 2nd International Workshop on Catchment-scale Hydrologic Modeling and Data Assimilation. Princeton, USA, 25-27 October, 2004. (pdf 6kB) (poster)

Rudiger, C., Walker, J. P., Kalma, J. D., Willgoose, G. R. and Houser, P. R., 2004. Streamflow Data Assimilation: A study on Nested Catchments, Proceedings of the 2nd International Workshop on Catchment-scale Hydrologic Modeling and Data Assimilation. Princeton, USA, 25-27 October, 2004. (pdf 124kB) (poster)

Pipunic, R., Walker, J. P., Western, A. W. and Savige, C., 2004. Assimilation of Latent and Sensible Heat Flux Data into a Land Surface Model, Proceedings of the 2nd International Workshop on Catchment-scale Hydrologic Modeling and Data Assimilation. Princeton, USA, 25-27 October, 2004. (pdf 2.3MB) (poster)

Hemakumara, M., Kalma, J. D., Walker, J. P.and Willgoose, G. R., 2004. Downscaling of Low Resolution Passive Microwave Soil Moisture Observations, Proceedings of the 2nd International Workshop on Catchment-scale Hydrologic Modeling and Data Assimilation. Princeton, USA, 25-27 October, 2004. (pdf 190kB) (poster)

Wealands, S. R., Grayson, R. B., Walker, J. P.and Bloschl, G., 2004. Quantitative Measures for the Local Similarity of Hydrological Spatial Patterns, Proceedings of the 2nd International Workshop on Catchment-scale Hydrologic Modeling and Data Assimilation. Princeton, USA, 25-27 October, 2004. (pdf 744kB) (poster)

Jacobs, B., Kalma, J. D., Hancock G., Hemakumara, M., Walker, J. P. and Willgoose, G. R., 2004. Towards Understanding the Spatial and Temporal Distribution and Dynamics of Soil Organic Carbon Within a Large Temperate Agricultural Catchment, Proceedings of the 2nd International Workshop on Catchment-scale Hydrologic Modeling and Data Assimilation. Princeton, USA, 25-27 October, 2004. (pdf 72kB) (poster)

Ni-Meister, W., Walker, J. P., Houser, P. R. and Reichle, R. H., 2004. Soil Moisture Initialization for Climate Prediction: Assimilating SMMR into a Land Surface Model, Proceedings of the 2nd International Workshop on Catchment-scale Hydrologic Modeling and Data Assimilation. Princeton, USA, 25-27 October, 2004. (pdf 6kB)

Foster, J., Sun, C., Walker, J. P., Kelly, R., Dong, J. and Chang, A., 2004. Mapping Random and Systematic Errors of Satellite-derived Snow Water Equivalent Observations in Eurasia. Proceedings of the International Society for Optical Engineering (SPIE) XXth Congress (Volume 4468), Las Palmas, Spain, September, 2004. (pdf 217kB)

Foster, J., Sun, C., Walker, J. P., Kelly, R., Dong, J. and Chang, A., 2004. Identifying and Mapping Systematic Errors in Passive Microwave Snow Water Equivalent Observations. Proceedings of the International Society for Photogrammetry and Remote Sensing (ISPRS) XXth Congress (Volume XXXV, Part B), Istanbul, Turkey, July, 2004. (pdf 1.3MB)

Ni-Meister, W., Walker, J. P. and Houser, P. R., 2004. Soil Moisture Initialization for Climate Prediction: Characterization of Model and Observation Errors, Proceedings of the 18th Conference on Hydrology. The American Meteorological Society, Seattle, USA, 12-15 January, 2004. (pdf 376kB)

Zhan, X., Houser, P. R. and Walker, J. P., 2004. Retrieving Surface Soil Moisture from Simulated HYDROS L-band Radiometer and Radar Observations Using Kalman Filter Data Assimilation, Proceedings of the 18th Conference on Hydrology. The American Meteorological Society, Seattle, USA, 12-15 January, 2004. (Slides)

Reichle, R. H., Koster, R. D., Walker, J. P., Reinecker, M. M. and Houser, P. R., 2002. Aspects of the Extended and Ensemble Kalman Filters for Land Data Assimilation in the NASA Seasonal-to-Interannual Prediction Project, In: R. Atlas and E. Kalney (Ed.), Proceedings of the Symposium on Observations, Data Assimilation, and Probabilistic Prediction. The American Meteorological Society, Orlando, USA, 13 - 17 January, 2002, 111-112. (pdf 90kB)

Sun, C., Walker, J. P. and Houser, P. R., 2002. Snow Assimilation in a Catchment-based Land Surface Model Using the Extended Kalman Filter, In: R. Atlas and E. Kalney (Ed.), Proceedings of the Symposium on Observations, Data Assimilation, and Probabilistic Prediction. The American Meteorological Society, Orlando, USA, 13 - 17 January, 2002, 89-91. (pdf 58kB) (Poster)

Entin, J. K., Houser, P. R., Walker, J. P. and Burke, E., 2002. Improving Land Surface Modeling with Data Assimilation of TRMM Data, Symposium on Observations, Data Assimilation, and Probabilistic Prediction. The American Meteorological Society, Orlando, USA, 13 - 17 January, 2002.

Walker, J. P. and Houser, P. R., 2001. Temporal and Spatial Resolution Requirements for a Soil Moisture Mission. International Geoscience and Remote Sensing Symposium (IGARSS) [CD-ROM], Sydney, Australia, 9 - 13 July, 2001, 6-8. (pdf 487kB) (Slides) Invited

Walker, J. P. and Houser, P. R., 2001. A Synthetic Study on the Influence of Error in Surface Soil Moisture Observations on Assimilation, In: A. E. MacDonald, T. Schlatter, J. Cunning and R. Ware (Ed.), Proceedings of the 5th Symposium on Integrated Observing Systems. The American Meteorological Society, Albuquerque, USA, 14 - 18 January, 2001, 135-138. (pdf 308kB) (Slides)

Berg, A. A., Famiglietti, J. S., Walker, J. P. and Houser, P. R., 2001. Development of a Catchment-Based Hydrometeorological Forcing Data Set for Land Surface Modeling Applications, In: D. R. Easterling, R. Dishel, D. J. Gafffen, J. S. Gaffney, T. R. Karl, G. L. Johnson, R. Pulwarty, A. Roback, C. F. Ropelewski and A. Warnick (Ed.), Proceedings of the 12th Symposium on Global Change and Climate Variations, The American Meteorological Society, Albuquerque, USA, 14 - 18 January, 2001, 197-198. (pdf 38kB) (Poster)

Walker, J. P., Troch, P. A., Mansini, M., Willgoose, G. R. and Kalma, J. D., 1997. Profile Soil Moisture Estimation Using the Modified IEM. In: T. Stein (Ed.), Proceedings International Geoscience and Remote Sensing Symposium (IGARSS), Singapore, 3 - 8 August, 1997, 1263-1265. (pdf 68kB)

Rahmoune, R., Ferrazzoli, P., Walker, J.P., and Grant, J.P., 2010. L-Band Emission From a Eucalyptus Forest in Various Soil Conditions During the NAFE Campaign. 11th Specialist Meeting on Microwave Radiometry and Remote Sensing of the Environment, MicroRad'10, Washington DC, USA, Mar 2010.

Calvet, J.-C., Albergel, C, Crapeau, M., Draper, C., Kerr, Y., Mahfouf, J.-F. Mialon, A., Rüdiger, C., Walker, J.P., Wigneron, J.-P., Zribi, M., 2009. Assimilation of Earth Observation Data in the ISBA Land Surface Model of Météo-France. Earth Observation and Water Cycle Conference, ESRIN, Italy, 18-20 November 2009.

Walker, J. P., Panciera, R., Ryu, D., Gray, D., and Jackson, T., 2009. SMAPEx: Soil Moisture Active–Passive Remote Sensing Experiment for SMAP Algorithm Development. GEWEX

Panciera, R., Walker, J. P., Kim, E. J., Kalma, J. D., 2009. A Proposed Improvement to the SMOS Soil Moisture Retrieval Algorithm in the Presence of Strong Land-Surface Heterogeneity. iLEAPS

Rudiger, C., Smith, A., Draper, C., Walker, J. P., Western, A., 2009. Hydrological Assessment of the Australian Land Surface Model CABLE in the Murray Darling Basin via Remotely Sensed Soil Moisture. GEWEX

Rudiger, C., Walker, J. P., Barrett, D., Gurney, R., Kerr, Y., Kim, E., LeMarshall, J., 2009. MoistureMap: Towards a soil moisture monitoring, prediction and reporting system for sustainable land and water management. GEWEX

Pipunic, R., Walker, J. P., Western, A., 2009. Data assimilation for better heat flux predictions from land surface models. GEWEX

Davenport, I., Walker, J. P., Gurney, R., 2009. Measuring vegetation structure with airborne laser altimetry. GEWEX

Walker, J. P., Rudiger, C., Calvet, J.-C., and Kerr, Y., 2009. An insitu-model-aircraft cross validation strategy for SMOS. 2nd Workshop on Surface Properties

Calvet, J.-C., Albergel, C., Rudiger, C., Walker, J., Wigneron, J.-P., Chanzy, A., Kerr, Y., 2009. Validation of satellite soil moisture products in southwestern France using model simulations and in-situ data. 2nd Workshop on Surface Properties

Walker, J. P., Rudiger, C. and the MoistureMap Team, 2009. A Potential Ground Calibration Target for SMOS, Geophysical Research Abstracts [CD-ROM], 11, EGU2009-6416, EGU General Assembly, Vienna, Austria, April 2009.

Walker, J. P., Allahmoradi, M., Peischl, S., Ye., N. and the MoistureMap Team, 2009. Towards an Australian Validation of SMOS, Geophysical Research Abstracts [CD-ROM], 11, EGU2009-6426, EGU General Assembly, Vienna, Austria, April 2009.

Draper, C., Mahfouf, J.-F., and Walker, J. P., 2009. EKF Assimilation of Near-surface Soil Moisture into ISBA: A Comparison of Error Covariance Evolution Approaches, Geophysical Research Abstracts [CD-ROM], 11, EGU2009-3897, EGU General Assembly, Vienna, Austria, April 2009.

Walker, J. P., Rudiger, C., Kerr, Y, Kim, E., and the MoistureMap Team, 2009. Towards a SMOS Calibration Site in the Australian Arid Zone, SMOS Validation & Retrieval Team Readiness Review Workshop, Lisbon, March 2009.

Walker, J. P., Allahmoradi, M., Peischl, S., Ye., N. and the MoistureMap Team, 2009. Towards an Australian Validation of SMOS, SMOS Validation & Retrieval Team Readiness Review Workshop, Lisbon, March 2009.

Walker, J. P., Rudiger, C., Panciera, R., Kerr, Y., Jackson, T., Ryu, D., and the MoistureMap Team, 2009. Towards SMOS and SMAP: An Australian Perspective, Third International Soil Moisture Working Group Meeting, Lisbon, March 2009. Invited

de Jeu, R. A. M., Holmes, T. R. H., Panciera, R., Walker, J. P. and Dolman, H. 2008. The Performance of the Land Parameter Retrieval Model (LPRM) at Different Scales and Frequencies, EOS, Transactions American Geophysical Union, 89(53), Fall Meeting Supplement, Abstract H41D-0900. Dec 2008.

Mladenova, I., Lakshmi, V., Jackson, T., Walker, J. P., Merlin, O. and de Jeu, R. A. M. 2008. The Impact of Standing Water and Irrigation on AMSR-E Sensitivity to Soil Moisture over the NAFE'06 Experiment Area, EOS, Transactions American Geophysical Union, 89(53), Fall Meeting Supplement, Abstract H41D-0908. Dec 2008.

Mladenova, I., Lakshmi, V., Walker, J. P., Panciera, R., Wagner, W. and Doubkova, M. 2008. Can the ASAR Global Monitoring Mode Adequately Capture Spatial Soil Moisture Variability?, EOS, Transactions American Geophysical Union, 89(53), Fall Meeting Supplement, Abstract H54A-04. Dec 2008.

Holmes, T. R. H., de Jeu, R. A. M., Parinussa, R. and Walker, J. P., 2008. Evaluation of Satellite Derived Land Surface Temperatures over the NAFE Research Sites, Geophysical Research Abstracts [CD-ROM], 10, EGU2008-A-03479, EGU General Assembly, Vienna, Austria, April 2008.

Saleh, K., kerr, Y. H., Boulet, G., Escorihuela, M. J., Maisongrande, P., Richaume, P., de Rosnay, P., Wigneron, J. P-., Lopez-Baeza, E., Grant, J. P., Delwart, S., Berger, M., Panciera, R. and Walker, J. P, 2008. Main Outcomes of the CoSMOS/NAFE Campaign for the Validation of SMOS Soil Moisture Retrieval Algorithm, 10th Specialist Meeting on Microwave Radiometry and Remote Sensing of the Environment [CD-ROM], MicroRad'08, Florence, Italy, Mar 2008.

Lakshmi, V., Mladenova, I., Jackson, T., Long, D., and Walker, J. P., 2007. Assessment of Potential AMSR-E Soil Moisture Disaggregation Using Scatterometer Observations, EOS, Transactions American Geophysical Union, 88(52), Fall Meeting Supplement, Abstract H31D-0633.

Merlin, O., Walker, J. P. and Kerr, Y., 2007. Remote Sensing of Soil Moisture, Workshop on Hydrological Consequences of Climate Change, Canbera, Australia, November 2007. Invited Keynote

Walker, J. P., 2007. Soil Moisture Monitoring Activities Downunder, Second International Soil Moisture Monitoring Workshop, Institute of Atmospheric Physics of the Chinese Academy of Sciences, Beijing, China, November 2007. Invited

Escorihuela, M.-J., Kerr, Y. and Walker, J. P., 2007. Assessment of Sun-glint Effects Over Land, 7th SMOS Workshop, Frascatti, Italy, October 2007.

Saleh, K., Kerr, Y., Boulet, G., Escoriheuela, M.-J., Massiongrande, P., Richaume, P., de Rosnay, P., Wigneron, J.-P., Cano, A., Lopez-Baeza, E., Grant, J., Skou, N., Panciera, R., Walker, J. P., Berger, M. and Delwart, S., 2007. The ESA CoSMOS Study for the Validation of the SMOS Soil Moisture L2 Prototype, 7th SMOS Workshop, Frascatti, Italy, October 2007.

Panciera, R., Walker, J. P., Merlin, O., Kalma, J.D., Kim, E.J. and Hacker, J., 2007. The National Airborne Field Experiment 2006 (NAFE'06) Dataset, 7th SMOS Workshop, Frascatti, Italy, October 2007.

Panciera, R., Walker, J. P., Kim, E.J., Kalma, J.D., Hacker, J., Merlin, O., Saleh, K., Wigneron, J.-P. and Grant, J., 2007. SMOS L2 L-band Soil Moisture Retrieval During NAFE’05, 7th SMOS Workshop, Frascatti, Italy, October 2007.

Pipunic, R., Walker, J. P., Trudinger, C. and Western, A. W., 2007. A One-Dimensional Data Assimilation Experiment Using 3D Eddy Covariance Heat Flux Observations to Improve Land Surface Modelling, EOS, Transactions American Geophysical Union, 88(23), Joint Assembly Supplement, Abstract H32A-06.

Draper, C., Walker, J. P. and Steinle, P., 2007. How Well Does AMSR-E Data Represent Soil Moisture Over Australia?, EOS, Transactions American Geophysical Union, 88(23), Joint Assembly Supplement, Abstract H51C-03.

Panciera, R., Walker, J. P., Merlin, O., Kalma, J., Kim, E. and Hacker, J, 2007. The National Airborne Field Experiment 2006 (NAFE’06) Dataset, EOS, Transactions American Geophysical Union, 88(23), Joint Assembly Supplement, Abstract H51C-01.

Gruhier, C., de Rosnay, P., Richaume, P., Kerr, Y., Rudiger, C., Boulet, G., Walker, J. P., Mougin, E., Ceschia, E. and Calvet, J,-C., 2007. Large Scale Evaluation of AMSR-E Soil Moisture Products Based on Ground Soil Moisture Network Measurements, EOS, Transactions American Geophysical Union, 88(23), Joint Assembly Supplement, Abstract H51C-02.

Teuling, A. J., Hurkmans, R., Merlin, O., Panciera, R. and Walker, J. P., 2007. Surface Soil Moisture Variability During NAFE'06, Geophysical Research Abstracts [CD-ROM], 9, EGU2007-A-03759, EGU General Assembly, Vienna, Austria, April 2007.

Gruhier, c., de Rosnay, P., Richaume, P., Kerr, Y., Rudiger, C., Walker, J. P., Mougin, E., Ceschia, E., and Calvet, J.-C., 2007. Large Scale Evaluation of AMSR Soil Moisture Products Based on Ground Soil Moisture Network Measurements, Geophysical Research Abstracts [CD-ROM], 9, EGU2007-A-07725, EGU General Assembly, Vienna, Austria, April 2007.

Merlin, O., Walker, J., Panciera, R., Kalma, J., Kim, E. and Hacker, J., 2007. The National Airborne Field Experiments: Towards 1 km Resolution Soil Moisture, Workshop on Satellite Observations of the Global Water Cycle, Irvine, USA, March 2007.

Kim, E., Tedesco, M., Walker, J. P., and Panciera, R., 2007. Observed Spatial Variability of Snow and Soil Moisture Signatures from the CLPX1 and NAFE?05 Campaigns, Workshop on Satellite Observations of the Global Water Cycle, Irvine, USA, March 2007.

Pipunic, R., Walker, J., Trudinger, C. and Western, A., 2007. Heat Flux Data Assimilation for Improved Land Surface Modelling: A One Dimensional Field Data Case Study, Workshop on Satellite Observations of the Global Water Cycle, Irvine, USA, March 2007.

Thyer, M. and Walker, J., 2007. A Bayesian Approach to Characterizing Uncertainty in Remotely Sensed Soil Moisture Measurements Using the NAFE Dataset, Workshop on Satellite Observations of the Global Water Cycle, Irvine, USA, March 2007.

Panciera, R., Walker, J. P., Kalma, J. D. and Kim, E. J., 2007. Scaling properties of passive microwave soil moisture signatures during NAFE05, Workshop on Satellite Observations of the Global Water Cycle, Irvine, USA, March 2007.

Draper, C., Steinle, P. and Walker, J., 2007. Soil moisture data in NWP, Workshop on Satellite Observations of the Global Water Cycle, Irvine, USA, March 2007.

Pipunic, R., Walker, J. P., Trudinger, C. and Western, A., 2007. Heat Flux Data Assimilation for Improved Land Surface Modelling - A One-dimensional Field Data Case Study. 14th Australian Meteorological and Oceanographic Society National Conference. Adelaide, Australia. February 5-8, 2007.

Draper, C., Steinle, P. and Walker, J. P., 2007. Soil Moisture Data in NWP. 14th Australian Meteorological and Oceanographic Society National Conference. Adelaide, Australia. February 5-8, 2007.

Ellett, K. M., Western, A. W., Walker, J. P., Sirawardena, L., Young, R. I., Smith, A. B., Flint, A. L. and Summerell, G., 2006. The Murrumbidgee Monitoring Network: Supporting CEOP, GEWEX and Hydrological Research in the Murray-Darling Basin, Australia, EOS, Transactions American Geophysical Union, 87(52), Fall Meeting Supplement, Abstract H34A-05.

Walker, J. P., 2006. Hydrologic Remote Sensing. 13th Australasian Remote Sensing and Photogrammetry Conference. Canberra, Australia. November 20-24, 2006. Invited Keynote

Merlin, O., Walker, J. P., Panciera, R., Kalma, J. D., Kim, E. and Hacker, J. M., 2006. The National Airborne Field Experiments: Towards 1 km Resolution Soil Moisture, Workshop on Recent Advances in Quantitative Remote Sensing, Valencia Spain, September 2006.

Berg, A.A. and Walker, J. P., 2006. Sensitivity of a Land Surface Model and Soil Moisture Assimilation Sytem to Bias in the Hydrometeorological Forcing. 32nd Annual Meeting of the Canadian Geophysical Union. Banff, Alberta, Canada. May 14-17, 2006.

Walker, J. P., Merlin, O., Pancierra, R. and Kalma, J. D., 2006. The 2006 National Airborne Field Experiment Plan, EOS, Transactions American Geophysical Union, 87(36), Joint Assembly Supplement, Abstract H33A-01. Invited

Ellett, K., Walker, J. P., Western, A. W. and Rodell, M., 2006. Investigating the Potential for Direct Assimilation of Terrestrial Water Storage Observations from the GRACE Satellite Mission, EOS, Transactions American Geophysical Union, 87(36), Joint Assembly Supplement, Abstract H21B-02.

Rodell, M., Reichle, R., Ellett, K., Walker, J. P., Lemoine, F. and Kato, H., 2006. Land Surface Model Assimilation of Data from GRACE and Other Satellites , EOS, Transactions American Geophysical Union, 87(36), Joint Assembly Supplement, Abstract H21B-01. Invited

Walker, J. P., Panciera, R., Merlin, O. and Kalma, J. D., 2006. Towards 1km Root Zone Soil Moisture from SMOS: The National Airborne Field Experiments, 6th SMOS Workshop, Copenhagen, Denmark, May 2006.

Grant, J. P., Van de Griend, A. A., Wigneron, J, -P., Walker, J. P., Kalma, J. D., Saleh, K. and Panciera, R., 2006. Influence of Surface Heterogeneity on L-band (1.4 GHz) Measurements at Various Spatial Resolutions: Some Preliminary Results of the NAFE/CoSMOS 2005 Field Campaign, 6th SMOS Workshop, Copenhagen, Denmark, May 2006. (Poster)

Macelloni, G., Palosvia, S., Pampaloni, P., Floury, N., Drinkwater, M., Kim, E. and Walker, J. P., 2006. Assessment of Instrument Stability and Calibration by Using Extended Targets: Antarctic Plateau (Dome-C) and Forests, 6th SMOS Workshop, Copenhagen, Denmark, May 2006.

Kim, E., Walker, J. P., Tedesco, M. and Dindschadler, B., 2006. Evaluation of Antarctic and Tropical Forest Sites for Calibration and Cross-Calibration of Spaceborne L-band Radiometers, 6th SMOS Workshop, Copenhagen, Denmark, May 2006.

Walker, J. P., Panciera, R., Merlin, O., Kalma, J. D., Kim, E. J. and Hacker, J. M., 2006. The National Airborne Field Experiments, Geophysical Research Abstracts [CD-ROM], 8, EGU06-A-03766, EGU General Assembly, Vienna, Austria, April 2006.

Panciera, R., Walker, J. P., Kalma, J. D. and Kim, E. J., 2006. The National Airborne Field Experiment: Scaling Properties of Passive Microwave Soil Moisture Signatures, Geophysical Research Abstracts [CD-ROM], 8, EGU06-A-01275, EGU General Assembly, Vienna, Austria, April 2006. (Poster)

Pipunic, R., Walker, J. P., Trudinger, C. and Western, A. W., 2006. Latent and Sensible Heat Flux Assimilation – A Synthetic Study, Geophysical Research Abstracts [CD-ROM], 8, EGU06-A-05388, EGU General Assembly, Vienna, Austria, April 2006. (Poster)

Thyer, M. and Walker, J. P., 2006. A Bayesian Approach to Characterizing Uncertainty in Remote Sensed Soil Moisture Measurements using the NAFE dataset, Geophysical Research Abstracts [CD-ROM], 8, EGU06-A-09976, EGU General Assembly, Vienna, Austria, April 2006. (Poster)

Berger, M., Kerr, Y. and Walker, J. P., 2006. coSMOS: Field Validation of the SMOS Soil Moisture Retrieval Algorithm, Geophysical Research Abstracts [CD-ROM], 8, EGU06-A-10763, EGU General Assembly, Vienna, Austria, April 2006.

Ruediger, C., Walker, J. P., Kalma, J. D., Willgoose, G. R. and Houser, P. R., 2006. Streamflow Assimilation: On the Effect of Model Biases, Geophysical Research Abstracts [CD-ROM], 8, EGU06-A-05322, EGU General Assembly, Vienna, Austria, April 2006. (Poster)

Walker, J. P. and Western, A. W., 2006. Soil Moisture Monitoring: Whither Shall We Measure?, Soil Moisture Monitoring Workshop, ESA-ESTEC, Nordwijk, The Netherlands, March 2006.

Kim, E. J., Tedesco, M., Walker, J. P. and Panciera, R., 2006. Observed Scaling Behavior of Snow and Soil Moisture Signatures from the CLPX and NAFE Campaigns, 9th Specialist Meeting on Microwave Radiometry and Remote Sensing Applications [CD-ROM], MicroRad'06, San Juan, Puerto Rico, Feb 2006.

Berger, M., Kerr, Y. and Walker, J. P., 2005. coSMOS: Field Validation of the SMOS Soil Moisture Retrieval Algorithm, The 9th International Symposium on Physical Measurements and Signatures in Remote Sensing, 17-19 Oct 2005, Beijing, China.

Walker, J. P., 2005. Land Surface Model Data Assimilation for Atmospheric Prediction, Proceedings 2nd Asia Oceania Geosciences Society [CD-ROM], OA19/1A-02-1/206. Invited

Smith, A. B., Walker, J. P. and Western, A. W., 2005. Assimilation of Gravity Data Into a Soil Moisture and Groundwater Column Model, Proceedings 2nd Asia Oceania Geosciences Society [CD-ROM], OA19/1A-02-2/206.

Turner, M. R. J., Walker, J. P., Oke, P. P. and Grayson, R. B., 2005. Assimilation of AVHRR Water Temperature Observations into a Coastal Hydrodynamic Model, Proceedings 2nd Asia Oceania Geosciences Society [CD-ROM], OA19/1A-02-5/206.

Walker, J. P., and Houser, P. R., 2005. Challenges and Solutions to High Resolution Soil Moisture Mapping, EOS, Transactions American Geophysical Union, 86(18), Joint Assemply Supplement, Abstract G23A-06. Invited

Ruediger, C., Walker, J. P., Kalma, J. D., Willgoose, G. R. and Houser, P. R., 2005. Assimilation of Streamflow and Surface Soil Moisture Observations into a Land Surface Model, Geophysical Research Abstracts [CD-ROM], 7, EGU05-A-02972, EGU General Assembly, Vienna, Austria, April 2005.

Turner, M., Walker, J. P., Oke, P. and Grayson, R. B., 2005. Sequential Data Assimilation of Satellite Data into a Coastal Hydrodynamic Model, Geophysical Research Abstracts [CD-ROM], 7, EGU05-A-02476, EGU General Assembly, Vienna, Austria, April 2005.

Willgoose, G. R., Hemakumara, M., Kalma, J. D., Walker, J. P. and Ruediger, C., 2005. The Spatial and Temporal Distribution of Point Scale Soil Water in a Semi-arid Catchment and Some Implications for Catchment Scale Predictability, Geophysical Research Abstracts [CD-ROM], 7, EGU05-A-04970, EGU General Assembly, Vienna, Austria, April 2005. Invited

Walker, J. P., 2005. Towards Remote Sensing for Hydrologic Prediction in Ungauged Basins, VIIth IAHS Scientific Assembly, Symposia 7.3 - New Data Collection Approaches and Model Development, Foz do Iguacu, Brazil. Invited

Walker, J. P., and Kandel, D. D., 2004. Brightness Temperature versus Surface Soil Moisture Assimilation, EOS, Transactions American Geophysical Union, 85(47), Fall Meeting Supplement, Abstract H12A-01.

Zhan, X, Houser, P. R., and Walker, J. P., 2004. Jointly Retrieving Surface Soil Moisture from Active and Passive Microwave Observations Using Cubist Data Mining, EOS, Transactions American Geophysical Union, 85(47), Fall Meeting Supplement, Abstract SF11A-04. Invited

Rudiger, C., Walker, J. P., Kalma, J. D., Willgoose, G. R. and Houser, P. R., 2004. A Catchment Based Study on Streamflow Data Assimilation, EOS, Transactions American Geophysical Union, Western Pacific Meeting Supplement, Abstract H23A-63.

Smith, A. B., Walker, J. P., Western, A. W., Ellett, K. M., Grayson, R. B. and Rodell, M., 2004. Factors Affecting the Detection of a Soil Moisture Signal in Field Relative Gravity Measurements, EOS, Transactions American Geophysical Union, Western Pacific Meeting Supplement, Abstract H23C-02.

Dong, J., Walker, J. P., Houser, P. R., Foster, J. L. and Kelly, R., 2004. Investigation on the Uncertainty of Passive Microwave Snow Water Equivalent Estimates, EOS, Transactions American Geophysical Union, Western Pacific Meeting Supplement, Abstract H23A-60.

Rudiger, C., Walker, J. P., Kalma, J. D., Willgoose, G. R. and Houser, P. R., 2004. Retrieving Soil Moisture States Using Streamflow Assimilation, EOS, Transactions American Geophysical Union, 85(17), Joint Assembly Supplement, Abstract H12B-03.

Savige, C. L., French, A. N., Western, A. W., Walker, J. P., Abuzar, M., Hacker, J. M. and Kalma, J. D., 2004. Testing Remotely Sensed Evapotranspiration Estimates Using Airborne and Ground Measurements, EOS, Transactions American Geophysical Union, 85(17), Joint Assembly Supplement, Abstract H12B-04.

Ellett, K. M., Walker, J. P., Grayson, R. B., Smith, A. and Rodell, M, 2004. GRACE in the Murray Darling Basin: Integrating Remote Sensing with Field Monitoring to Improve Hydrological Model Prediction, EOS, Transactions American Geophysical Union, 85(17), Joint Assembly Supplement, Abstract H23A-02.

Hemakumara, M., Rudiger, C., Jacobs, B., Kalma, J. D., Walker, J. P., Willgoose, G. R., Hancock, G. and Saco, P., 2004. Scaling and Assimilation of Soil Moisture and Streamflow (SASMAS): Project Overview and Preliminary Results, Geophysical Research Abstracts, 6, 06693, EGU, Nice, France, April 2004.

Ellett, K. M., Walker, J. P., Grayson, R. B., Smith, A. and Rodell, M, 2004. GRACE in the Murray Darling Basin: Integrating Remote Sensing with Field Monitoring to Improve Hydrological Model Prediction, GRACE Hydrology Workshop, Irvine, USA, March 2004. Invited

Ellett, K., Walker, J. P., Grayson, R. B., Smith, A. and Rodell, M., 2004. GRACE in the Murray-Darling Basin: Using Gravity Measurements to Improve Hydrologic Prediction in Catchment-scale Models, Workshop on Prediction in Ungauged Basins, Perth, Australia, Febuary 2004.

Walker, J. P., Grayson, R. B., Panciera, R., Zhan, X., and Houser, P. R., 2003. AMSR-E Soil Moisture Validation Efforts in the Australian Arid Zone, EOS, Transactions American Geophysical Union, 84(46), Fall Meeting Supplement, Abstract H22E-05.

Walker, J. P., Ursino, N., Grayson, R. B., and Houser, P. R., 2003. Root Zone Soil Moisture: Assimilation of SMMR Observations, Geophysical Research Abstracts [CD-ROM], 5, EAE03-A-01090, AGU-EGS-EGU Joint Assembly, Nice, France, April 2003.

Walker, J. P., Grayson, R. B., Rodell, M. and Ellett, K. M., 2003. Gravity Changes, Soil Moisture and Data Assimilation, Geophysical Research Abstracts [CD-ROM], 5, EAE03-A-04526, AGU-EGS-EGU Joint Assembly, Nice, France, April 2003.

Rodell, M., Velicogna, I., Walker, J. P., and Reichle, R., 2003. Assimilation of GRACE Derived Terrestrial Water Storage into a Hydrological Land Surface Model, Geophysical Research Abstracts [CD-ROM], 5, EAE03-A-13397, AGU-EGS-EGU Joint Assembly, Nice, France, April 2003.

Ni-Meister, W., Walker, J. P., Reichle, R. H., Houser, P. R., and Koster, R. D., 2002. Soil Moisture Intialization for Climate Predictions: Assimilating SMMR into a Land Surface Model, EOS, Transactions American Geophysical Union, 83(47), Fall Meeting Supplement, Abstract H62D-0894.

Zhan, X., Houser, P. R., Walker, J. P. and Reichle, R. H., 2002. Estimation of Model Error Covariance Matrices of the Extended Kalman Filter for Validation of AMSR-E Soil Moisture Product, EOS, Transactions American Geophysical Union, 83(47), Fall Meeting Supplement, Abstract H62D-0895.

Walker, J. P., 2002. Towards an Australian Root Zone Soil Moisture Product, Willgoose Symposium, Newcastle, Australia, 25 October, 2002.

Ruediger, C., Walker, J. P., Willgoose G. R., Kalma, J. D., Davidson, R., Hemakumara, M., Houser, P. R. and Woods, R., 2002. Scaling and Assimilation of Soil Moisture and Streamflow (SASMAS), Willgoose Symposium, Newcastle, Australia, 25 October, 2002.

Davidson, R. E. and Walker, J. P., 2002. Soil Moisture Monitoring in the Goulburn River Catchment, Willgoose Symposium, Newcastle, Australia, 25 October, 2002.

Zhan, X., Entin, J., Houser, P. R., Reichle, R. H. and Walker, J. P., 2002. Application of Kalman Filtering for Soil Moisture Data Assimilation in GSFC's Land Data Assimilation System, EOS, Transactions American Geophysical Union, 83(19): S194.

Meng, C. J., Houser, P. R., Mitchell, K., Rodell, M., Gottschalck, J., Jambor, U., Arsenault, K., Bosilovich, M., Cosgrove, B., Entin, J. K., Radakovich, J., Walker, J. P., Pan, H. and Gayno, G., 2002. Validation of Global LDAS Radiative Forcing, EOS, Transactions American Geophysical Union, 83(19): S163.

Walker, J. P. and Houser, P. R., 2001. Initialization of Soil Moisture in a Global Climate Model: A North American Case Study, EOS, Transactions American Geophysical Union, 82(47): F457.

Ni-Meister, W., Walker, J. P. and Houser, P. R., 2001. Better use of Remotely Sensed Soil Moisture to Initialize Soil Moisture in Global Climate Models, EOS, Transactions American Geophysical Union, 82(47): F457.

Meng, C. J., Houser, P. R., Mitchell, K., Gayno, G., Rodell, M., Jambor, U., Gottschalck, J., Cosgrove, B., Radakovich, J., Arsenault, K., Bosilovich, M., Entin, J. K., Walker, J. P. and Pan, H., 2001. Implementation of the AFWA AGRMET Solar Radiation Scheme in GLDAS, EOS, Transactions American Geophysical Union, 82(47): F422.

Houser, P. R., Sun, C. and Walker, J. P., 2001. Continental-scale Assimilation of Remotely Sensed Snow Observations, EOS, Transactions American Geophysical Union, 82(47): F548. Invited

Walker, J. P. and Houser, P. R., 2001. Initialization of Soil Moisture in a Global Climate Model: A North American Case Study, In: E. E. van Loon and P. A. Troch (Ed.), Book of Abstracts: International Worshop on Catchment-scale Hydrological Modeling and Data Assimilation, Wageningen, The Netherlands, September 3-5, 2001, Rapport 101.

Sun, C., Walker, J. P. and Houser, P. R., 2001. Assimilation of Remotely Sensed Snow Observations in a Catchment-based Land Surface Model, In: E. E. van Loon and P. A. Troch (Ed.), Book of Abstracts: International Worshop on Catchment-scale Hydrological Modeling and Data Assimilation, Wageningen, The Netherlands, September 3-5, 2001, Rapport 101.

Reichle, R. H., Walker, J. P., Koster, R. D., Reinecker, M. M. and Houser, P. R., 2001. Soil Moisture Assimilation with the Ensemble Kalman Filter in Support of NASA's Seasonal-to-Interannual Prediction Project, In: E. E. van Loon and P. A. Troch (Ed.), Book of Abstracts: International Worshop on Catchment-scale Hydrological Modeling and Data Assimilation, Wageningen, The Netherlands, September 3-5, 2001, Rapport 101.

Walker, J. P. and Houser, P. R., 2001. Accuracy Requirements for a Soil Moisture Mission, EOS, Transactions American Geophysical Union, 82(20): S158.

Berg, A. A., Famiglietti, J. S., Walker, J. P., and Houser, P. R., 2001. The Sensitivity of Land Surface Model Simulations to the NCEP/NCAR, ERA-15, and Bias Reduced Forcing Datasets, EOS, Transactions American Geophysical Union, 82(20): S188.

Sun, C., Walker, J. P. and Houser, P. R., 2001. Snow Data Assimilation in a Catchment-Based Land Surface Model, EOS, Transactions American Geophysical Union, 82(20): S158.

Entin, J. K., Houser, P. R., Walker, J. P. and Bourke, E., 2001. Data Assimilation of 10 GHz Brightness Temperatures into a Land Surface Model, EOS, Transactions American Geophysical Union, 82(20): S186.

Famiglietti, J. S., Olivera, F., Walker, J. P., Houser, P. R. and Rodell, M., 2001. A Catchment-Based Global River Routing Scheme for Climate Models and Assimilation of Streamflow and Altimetry Data, European Geophysical Society 26th General Assembly, Nice, France, 20-25 March 2001.

Berg, A. A., Famiglietti, J. S., Walker, J. P. and Houser, P. R., 2000. Production of a Catchment-Based Hydrometeorological Forcing Data Set for North America, EOS, Transactions American Geophysical Union, 81(48): F395.

Walker, J. P. and Houser, P. R., 2000. A Synthetic Study of Near-Surface Soil Moisture Assimilation for North America, EOS, Transactions American Geophysical Union, 81(19): S203.

Walker, J. P., Kurera, D. F. and Houser, P. R., 2000. A Field Evaluation of ERS-2 Synthetic Aperture Radar Data for Soil Moisture Measurement, EOS, Transactions American Geophysical Union, 81(19): S207.

Walker, J. P., Willgoose, G. R. and Kalma, J. D., 1999. Assimilation of Surface Soil Moisture Data into a Model, EOS, Transactions American Geophysical Union, 80(46): F408.

Walker, J. P., Willgoose, G. R. and Kalma, J. D., 1998. Towards Profile Soil Moisture Retrieval From Remote Sensing, EOS, Transactions American Geophysical Union, 79(17): S41.

Australian Research Council Annual Report 2007-08, 2008. (pdf 63kB)

The Word From on High: We're Drying Up Fast, Sydney Morning Herald, 30 December 2006. (pdf 19kB)

Staff Profile - Jeff Walker, CEE Bulletin, November 2006. (pdf 343kB)

Eye in Space to Help Gauge Deep Moisture in Farm Soils, Melbourne UniNews, 15(22), 27 November - 11 December 2006. (jpg 1.1MB)

2AY Interview on NAFE'06, 13 November 2006.

Planting Crops Set for High Tech Boost, Sydney Morning Herald, 11 November 2006. (jpg 2.1MB)

Space Satellite to Help Farmers Gauge Water Levels in Paddocks, University of Melbourne Media Release, 11 November 2006. (pdf 65kB)

Leetons Skies Aid in Making New Farm Tool, The Irrigator, 10 November 2006. (jpg 3.2MB)

Eye in the Sky, ABC Riverina, 9 November 2006. (wma 4.2MB)

Glider Collecting Soil, Climate Change Information, ABC News Online, 9 November 2006. (pdf 14kB)

Narrandera Community Radio Interview, Spirit FM, 7 November 2006. (wma 26.6MB)

Eye in the Sky Checks Soil Moisture Across Kyeamba Valley, NSW Department of Primary Industry Media Release, 30 October 2006. (pdf 17kB)

Satellites to Track Soil Moisture, The Land, 29 December 2005. (pdf 436kB)

Catchment Research, Manning River Times, 30 November 2005. (pdf 132kB)

Satellite Researchers, NBN News, 23 November 2005. (mpg 43MB)

2UG Interview on NAFE'05, xx November 2005.

Space Technology Hits Scone, Scone Advocate, Front Page, 17 November 2005. (jpg 588kB)

Weather Prediction Part of Research, Hunter Valley News, 16 November 2005. (jpg 356kB)

World Experts Study Merriwa Soil, Hunter Valley News, 9 November 2005. (jpg 496kB)

Australian Research Council Annual Report 2004-05, 2005. (pdf 38kB)

Dedicated SMOS Campaign Activities Down Under, ESA The Living Planet Programme News, 5 October 2005. (pdf 56kB)

Soil Mapping Project Funded, Land and Water News, 27 April 2005. (pdf 25kB)

Funding Boost for Data Rich Remote Soil Water Mapping, Melbourne UniNews, 14(6), 18 April - 2 May 2005. (pdf 14kB)

Sky No Limit on Soil Tests, The Weekly Times, 30 March 2005. (pdf 167kB)

Water Seekers Awared $1 Million, University of Melbourne Media Release, 17 March 2005. (pdf 15kB)

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