Artículo

Bruscantini, C.A.; Crow, W.T.; Grings, F.; Perna, P.; Maas, M.; Karszenbaum, H. "An observing system simulation experiment for the aquarius/SAC-D soil moisture product" (2014) IEEE Transactions on Geoscience and Remote Sensing. 52(10):6086-6094
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Abstract:

An Observing System Simulation Experiment (OSSE) for the Aquarius/SAC-D mission has been developed for assessing the accuracy of soil moisture retrievals from passive L-band remote sensing. The implementation of the OSSE is based on the following: a 1-km land surface model over the Red-Arkansas River Basin, a forward microwave emission model to simulate the radiometer observations, a realistic orbital and sensor model to resample the measurements mimicking Aquarius operation, and an inverse soil moisture retrieval model. The simulation implements a zero-order radiative transfer model. Retrieval is performed by direct inversion of the forward model. The Aquarius OSSE attempts to capture the influence of various error sources, such as land surface heterogeneity, instrument noise, and retrieval ancillary parameter uncertainty, all on the accuracy of Aquarius surface soil moisture retrievals. In order to assess the impact of these error sources on the estimated volumetric soil moisture, a quantitative error analysis is performed by comparison of footprint-scale synthetic soil moisture with 'true' soil moisture fields obtained from the direct aggregation of the original 1-km soil moisture field input to the forward model. Results show that, in heavily vegetated areas, soil moisture retrievals have a positive bias that can be suppressed with an alternative aggregation strategy for ancillary parameter vegetation water content (VWC). Retrieval accuracy was also evaluated when adding errors to 1-km VWC (which are intended to account for errors in VWC derived from remote sensing data). For soil moisture retrieval root-mean-square error on the order of 0.05 m3/m3, the error in VWC should be less than 12%. © 1980-2012 IEEE.

Registro:

Documento: Artículo
Título:An observing system simulation experiment for the aquarius/SAC-D soil moisture product
Autor:Bruscantini, C.A.; Crow, W.T.; Grings, F.; Perna, P.; Maas, M.; Karszenbaum, H.
Filiación:Instituto de Astronomía y Física Del Espacio, C1428ZAA Buenos Aires, Argentina
Hydrology and Remote Sensing Laboratory, Agricultural Research Service, U.S. Department of Agriculture, Beltsville, MD 20705, United States
Palabras clave:Aquarius; Observing System Simulation Experiment (OSSE); Soil moisture; Error analysis; Experiments; Remote sensing; AQUARIUS; Microwave emission models; Observing system simulation experiments; Quantitative error analysis; Soil moisture retrievals; Surface soil moisture retrieval; Vegetation water contents (VWC); Volumetric soil moistures; Soil moisture; accuracy assessment; Aquarius; data assimilation; error analysis; microwave radiation; numerical model; radiative transfer; radiometer; satellite mission; soil moisture; vegetation cover; water content; Arkansas Basin; Red Basin [United States]; United States
Año:2014
Volumen:52
Número:10
Página de inicio:6086
Página de fin:6094
DOI: http://dx.doi.org/10.1109/TGRS.2013.2294915
Título revista:IEEE Transactions on Geoscience and Remote Sensing
Título revista abreviado:IEEE Trans Geosci Remote Sens
ISSN:01962892
CODEN:IGRSD
Registro:https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_01962892_v52_n10_p6086_Bruscantini

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Citas:

---------- APA ----------
Bruscantini, C.A., Crow, W.T., Grings, F., Perna, P., Maas, M. & Karszenbaum, H. (2014) . An observing system simulation experiment for the aquarius/SAC-D soil moisture product. IEEE Transactions on Geoscience and Remote Sensing, 52(10), 6086-6094.
http://dx.doi.org/10.1109/TGRS.2013.2294915
---------- CHICAGO ----------
Bruscantini, C.A., Crow, W.T., Grings, F., Perna, P., Maas, M., Karszenbaum, H. "An observing system simulation experiment for the aquarius/SAC-D soil moisture product" . IEEE Transactions on Geoscience and Remote Sensing 52, no. 10 (2014) : 6086-6094.
http://dx.doi.org/10.1109/TGRS.2013.2294915
---------- MLA ----------
Bruscantini, C.A., Crow, W.T., Grings, F., Perna, P., Maas, M., Karszenbaum, H. "An observing system simulation experiment for the aquarius/SAC-D soil moisture product" . IEEE Transactions on Geoscience and Remote Sensing, vol. 52, no. 10, 2014, pp. 6086-6094.
http://dx.doi.org/10.1109/TGRS.2013.2294915
---------- VANCOUVER ----------
Bruscantini, C.A., Crow, W.T., Grings, F., Perna, P., Maas, M., Karszenbaum, H. An observing system simulation experiment for the aquarius/SAC-D soil moisture product. IEEE Trans Geosci Remote Sens. 2014;52(10):6086-6094.
http://dx.doi.org/10.1109/TGRS.2013.2294915