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 Hydrology and Remote Sensing Laboratory: Beltsville, MD
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Victoria  Walker    POST DOC /ARSUserFiles/56478/VictoriaWalker_web.jpg
**Victoria Walker, Ph.D.*******Postdoctoral Research Associate*****USDA-ARS Hydrology and Remote Sensing Laboratory****Bldg. 007, Rm. 104, BARC-West****Beltsville, MD 20705-2350 USA****Voice: (301) 504-7490****Fax: (301) 504-8931****Victoria.Walker@usda.gov**
**Research Interests:**
Synthesis of soil moisture and vegetation monitoring data in support of remote sensing calibration and validation activities.**Education:**
2014 B.S. (Applied Meteorology) Department of Applied Aviation Sciences, Embry-Riddle Aeronautical University, Prescott, AZ.
2016 M.S. (Agricultural Meteorology) Department of Agronomy, Iowa State University, Ames, IA.
2019 Ph.D. (Agricultural Meteorology) Department of Agronomy, Iowa State University, Ames, IA.**Professional Experience:**
2014 - 2016: Graduate Research Assistant, Department of Agronomy, Iowa State University, Ames, IA.
2016 - 2019: NASA Earth and Space Science Fellow, Department of Agronomy, Iowa State University, Ames, IA.
2019 - 2021: Postdoctoral Research Scientist, Numerical Terradynamic Simulation Group, University of Montana, Missoula, MT.
2021 - present: ORISE Postdoctoral Fellow, USDA-ARS Hydrology and Remote Sensing Laboratory, Beltsville, MD.**Publication Databases:******
​ORCID
**Selected Publications:**
**Walker, V. A.**, Wallace, V., Yildirim, E., Eichinger, W. E., Cosh, M. H., & Hornbuckle, B. K. (2023). From Field Observations to Temporally Dynamic Soil Surface Roughness Retrievals in the U.S. Corn Belt. *Remote Sensing of Environment*, 287, 113458, doi:10.1016/j.rse.2023.113458
**Walker, V. A.**, Colliander, A. & Kimball, J. S. (2022). Satellite Retrievals of Probabilistic Freeze-Thaw Conditions from SMAP and AMSR Brightness Temperatures. *IEEE Transactions on Geoscience and Remote Sensing*, 60, 1-11, doi:10.1109/TGRS.2022.3174807
Togliatti, K., Lewis-Beck, C., **Walker, V. A.**, Hartman, T., VanLoocke, A., Cosh, M. H., & Hornbuckle B. K. (2020). Quantitative Assessment of Satellite L-band Vegetation Optical Depth in the U.S. Corn Belt. *IEEE Geoscience and Remote Sensing Letters*, 19, 1-5, doi:10.1109/LGRS.2020.3034174
Lewis-Beck, C., Zhu, Z., **Walker, V. A.**, & Hornbuckle B. K. (2020). Modeling Crop Phenology in the US Corn Belt Using Spatially Referenced SMOS Satellite Data. *Journal of Agricultural, Biological and Environmental Statistics*, 25, 657-675, doi:10.1007/s13253-020-00419-x
Lewis-Beck, C., **Walker, V. A.**, Niemi, J., Caragea, P., & Hornbuckle B. K. (2020). Extracting Agronomic Information from SMOS Vegetation Optical Depth in the US Corn Belt Using a Nonlinear Hierarchical Model. *Remote Sensing*, 12(5), 827, doi:10.3390/rs12050827
**Walker, V. A.**, Hornbuckle B. K., Cosh, M. H., & Prueger, J. H. (2019). Seasonal Evaluation of SMAP Soil Moisture in the U.S. Corn Belt. *Remote Sensing*, 11(21), 2488, doi:10.3390/rs11212488
Togliatti, K., Hartman, T., **Walker, V. A.**, Arkebauer, T. J., Suyker, A. E., VanLoocke, A., & Hornbuckle B. K. (2019). Satellite L-band Vegetation Optical Depth is Directly Proportional to Crop Water in the US Corn Belt. *Remote Sensing of Environment*, 233, 111378, doi:10.1016/j.rse.2019.111378
Cosh, M. H., White, W. A., Colliander, A., Jackson, T. J., Prueger, J. H., Hornbuckle B. K., Hunt, E. R., McNairn, H., Powers, J., **Walker, V. A.**, & Bollock, P. (2019). Estimating Vegetation Water Content during the Soil Moisture Active Passive Validation Experiment 2016. *Journal of Applied Remote Sensing*, 13(1), 014516, doi:10.1117/1.JRS.13.014516
**Walker, V. A.**, Hornbuckle B. K., & Cosh, M. H. (2018). A Five-Year Evaluation of SMOS Level 2 Soil Moisture in the Corn Belt of the United States. *IEEE Journal of Selected Topics in Applied Earth Observations and Remote Sensing*, 11(12), 889-903, doi:10.1109/JSTARS.2018.2864897
Hornbuckle, B. K., Patton, J. C., VanLoocke, A., Suyker, A. E., Roby, M. C., **Walker, V. A.**, Iyer, E. R., Herzmann, D. E., & Endacott, E. A. (2016). SMOS Optical Thickness Changes in Response to the Growth and Development of Crops, Crop Management, and Weather. *Remote Sensing of Environment*, 180, 320-333, doi:10.1016/j.rse.2016.02.043
Rondinelli, W. J., Hornbuckle B. K., Patton, J. C., Cosh, M. H., **Walker, V. A.**, Carr, B. D. & Logsdon, S. D (2015). Different Rates of Soil Drying after Rainfall are Observed by the SMOS Satellite and the South Fork in situ Soil Moisture Network. *Journal of Hydrometeorology*, 16, 889-903, doi:10.1175/JHM-D-14-0137.1

****


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