Articles | Volume 21, issue 9
https://doi.org/10.5194/hess-21-4403-2017
https://doi.org/10.5194/hess-21-4403-2017
Research article
 | 
07 Sep 2017
Research article |  | 07 Sep 2017

Multi-decadal analysis of root-zone soil moisture applying the exponential filter across CONUS

Kenneth J. Tobin, Roberto Torres, Wade T. Crow, and Marvin E. Bennett

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Cited articles

Albergel, C., Rüdiger, C., Pellarin, T., Calvet, J.-C., Fritz, N., Froissard, F., Suquia, D., Petitpa, A., Piguet, B., and Martin, E.: From near-surface to root-zone soil moisture using an exponential filter: an assessment of the method based on in-situ observations and model simulations, Hydrol. Earth Syst. Sci., 12, 1323–1337, https://doi.org/10.5194/hess-12-1323-2008, 2008.
Albergel, C., de Rosnay, P., Balsamo, G., Isaksen, L., and Munoz-Sabater, J.: Soil moisture analyses at ECMWF: evaluation using global-based in situ observations, Remote Sens. Environ., 118, 215–226, 2012.
Al Bitar, A., Leroux, D., Kerr, Y. H., Merlin, O., Richaume, P., Sahoo, A., and Wood, E. F.: Evaluation of SMOS soil moisture products over Continental US using the SCAN/SNOTEL Network, IEEE T. Geosci. Remote, 50, 1572–1586, 2012.
Bartalis, Z., Wagner, W., Naeimi, V., Hasenauer, S., Scipai, K., Bonekmap, H., Figa, J., and Anderson, C.: Initial soil moisture retrievals from the METOP-A Advanced Scatterometer (ASCAT), Hydrol. Land Surf. Stud., 34, L02401, https://doi.org/10.1029/2007GL031088, 2007.
Bell, J. E., Palecki, M. A., Baker, C. B., Collins, W. G., Lawrimore, J. H., Leeper, R. D., Hall, M. E., Kochendorfer, J., Meyers, T. P., Wilson, T., and Diamond, H. J.: US Climate Reference Network soil moisture and temperature observations, J. Hydrometeorol., 14, 977–988, 2013.
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Short summary
This study applied the exponential filter to produce an estimate of root-zone soil moisture at 20 to 25 cm depths. Four types of microwave, surface satellite soil moisture were used. The study focused on the continental United States, and in situ data were used from the International Soil Moisture Network for comparison. This study spans almost two decades (1997 to 2014). Root mean square error was close to 0.04, which is the baseline value for accuracy designated for many satellite missions.