CREST-SMART (Soil Moisture Advanced Radiometric Testbed)

Research Objectives:
This study expands the geographic domain of the previous studies by conducting a comprehensive field campaign in the northeastern United States. To our knowledge, this study constitutes the first attempt to study, in the northeastern region, the performance of soil moisture retrieval throughout the day using passive microwave observations from a ground-based L-band radiometer that mimics the future NASA Soil Moisture Active Passive (SMAP) sensor that launched in 2015.
Another objective of this study was to investigate the spatiotemporal variability of soil moisture in a field-scale area with a particular focus on the analysis of the effect of the diurnal variability in soil temperature on the retrieval of soil moisture from L-band passive microwave observations.


SMAP Satellite


Abdelkader, M., Temimi, M., Colliander, A., Cosh, M.H., Kelly, V.R., Lakhankar, T. and Fares, A., 2022. Assessing the Spatiotemporal Variability of SMAP Soil Moisture Accuracy in a Deciduous Forest RegionRemote Sensing14(14), p.3329.

Holtzman NM, Anderegg LD, Kraatz S, Mavrovic A, Sonnentag O, Pappas C, Cosh MH, Langlois A, Lakhankar T, Tesser D, Steiner N. L-band vegetation optical depth as an indicator of plant water potential in a temperate deciduous forest stand. Biogeosciences. 2021 Feb 1;18(2):739-53.

Fang, L., Zhan, X., Yin, J., Liu, J., Schull, M., Walker, J.P., Wen, J., Cosh, M.H., Lakhankar, T., Collins, C.H. and Bosch, D.D., 2020. An Intercomparison Study of Algorithms for Downscaling SMAP Radiometer Soil Moisture RetrievalsJournal of Hydrometeorology21(8), pp.1761-1775.

Olivieri J.N., Muñoz-Barreto J., Tirado-Corbalá R., Lakhankar T., and A Fisher (2017) Comparison and downscale of AMSR2 soil moisture products with in-situ measurements from the SCAN-NRCS network over Puerto RicoHydrology4(4), 46; doi:10.3390/hydrology4040046.

Nilawar A, Calderlla C., Lakhankar T., Waikar M., and J. Muñoz, (2017), Satellite Soil Moisture Validation using Hydrological SWAT Model: A Case Study of Puerto Rico, USAHydrology4(4), 45; doi: 10.3390/hydrology4040045.

M Temimi, T Lakhankar, X Zhan, MH Cosh, NY Krakauer, A Fares, V Kelly, R Khanbilvardi, L Kumassi (2014), Soil Moisture Retrieval Using Ground-Based L-Band Passive Microwave Observations in Northeastern USAVadose Zone Research, 13(3). doi: 10.2136/vzj2013.06.0101

Marouane Temimi, Michael Cosh, Tarendra Lakhankar, Xiwu Zhang, Reza Khanbilvardi. In situ observations from NOAA-CREST microwave observation unit for improved soil moisture retrieval. IGRSS Symposium, 24-29 July 2011.