Artículo

Bruscantini, C.A.; Perna, P.; Ferrazzoli, P.; Grings, F.; Karszenbaum, H.; Crow, W.T. "Effect of forward/inverse model asymmetries over retrieved soil moisture assessed with an OSSE for the Aquarius/SAC-D mission" (2014) IEEE Journal of Selected Topics in Applied Earth Observations and Remote Sensing. 7(3):1123-1129
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Abstract:

An Observing System Simulation Experiment (OSSE) for the Aquarius/SAC-D mission that includes different models for forward and retrieval processes is presented. This OSSE is implemented to study the errors related to the use of simple retrieval models in passive microwave applications. To this end, a theoretical forward model was introduced, which is suitable to reproduce some of the complexities related to canopy vegetation scattering. So far, this OSSE has been successfully exploited to study the artifacts in the retrieved soil moisture associated to: 1) uncertainties and aggregation of the ancillary parameters needed for the retrieval, and 2) instrumental noise effects. In this paper, we attempt to model the influence of this 'model asymmetry' (different forward and inverse model) in the estimated soil moisture. These asymmetries are related to the fact that the emissivity of real surfaces is complex and strongly dependent on land cover type and condition. In particular, surface covered by average to dense vegetation presents complex scattering properties, related to canopy structure. Using this theoretical model, the difficulties related to retrieving soil moisture from passive data with a simple model are studied. The accuracy of the soil moisture estimation is analyzed in order to illustrate the impact of discrepancies between both models. In general, retrieved soil moisture performs worse over dense vegetated areas and under wet conditions. Furthermore, accuracy is highly dependent on land cover. © 2014 IEEE.

Registro:

Documento: Artículo
Título:Effect of forward/inverse model asymmetries over retrieved soil moisture assessed with an OSSE for the Aquarius/SAC-D mission
Autor:Bruscantini, C.A.; Perna, P.; Ferrazzoli, P.; Grings, F.; Karszenbaum, H.; Crow, W.T.
Filiación:Instituto de Astronomía y Física Del Espacio (IAFE), Buenos Aires, Argentina
Tor Vergata University, DICII, 00133 Roma, Italy
Hydrology and Remote Sensing Laboratory, USDA/ ARS, Beltsville, MD 20705, United States
Palabras clave:Aquarius; OSSE; Radiative transfer model; Soil moisture; Theoretical model; Electromagnetic wave emission; Soil moisture; AQUARIUS; Forward and inverse modeling; Observing system simulation experiments; OSSE; Radiative transfer model; Soil moisture estimation; Theoretical modeling; Vegetation scattering; Computer simulation; accuracy assessment; Aquarius; emissivity; radiative transfer; satellite data; satellite imagery; scattering; soil analysis; soil moisture
Año:2014
Volumen:7
Número:3
Página de inicio:1123
Página de fin:1129
DOI: http://dx.doi.org/10.1109/JSTARS.2013.2265076
Título revista:IEEE Journal of Selected Topics in Applied Earth Observations and Remote Sensing
Título revista abreviado:IEEE J. Sel. Top. Appl. Earth Obs. Remote Sens.
ISSN:19391404
Registro:https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_19391404_v7_n3_p1123_Bruscantini

Referencias:

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Citas:

---------- APA ----------
Bruscantini, C.A., Perna, P., Ferrazzoli, P., Grings, F., Karszenbaum, H. & Crow, W.T. (2014) . Effect of forward/inverse model asymmetries over retrieved soil moisture assessed with an OSSE for the Aquarius/SAC-D mission. IEEE Journal of Selected Topics in Applied Earth Observations and Remote Sensing, 7(3), 1123-1129.
http://dx.doi.org/10.1109/JSTARS.2013.2265076
---------- CHICAGO ----------
Bruscantini, C.A., Perna, P., Ferrazzoli, P., Grings, F., Karszenbaum, H., Crow, W.T. "Effect of forward/inverse model asymmetries over retrieved soil moisture assessed with an OSSE for the Aquarius/SAC-D mission" . IEEE Journal of Selected Topics in Applied Earth Observations and Remote Sensing 7, no. 3 (2014) : 1123-1129.
http://dx.doi.org/10.1109/JSTARS.2013.2265076
---------- MLA ----------
Bruscantini, C.A., Perna, P., Ferrazzoli, P., Grings, F., Karszenbaum, H., Crow, W.T. "Effect of forward/inverse model asymmetries over retrieved soil moisture assessed with an OSSE for the Aquarius/SAC-D mission" . IEEE Journal of Selected Topics in Applied Earth Observations and Remote Sensing, vol. 7, no. 3, 2014, pp. 1123-1129.
http://dx.doi.org/10.1109/JSTARS.2013.2265076
---------- VANCOUVER ----------
Bruscantini, C.A., Perna, P., Ferrazzoli, P., Grings, F., Karszenbaum, H., Crow, W.T. Effect of forward/inverse model asymmetries over retrieved soil moisture assessed with an OSSE for the Aquarius/SAC-D mission. IEEE J. Sel. Top. Appl. Earth Obs. Remote Sens. 2014;7(3):1123-1129.
http://dx.doi.org/10.1109/JSTARS.2013.2265076