Effect of forward/inverse model asymmetries over retrieved soil moisture assessed with an OSSE for the Aquarius/SAC-D mission

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,...

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Detalles Bibliográficos
Autores principales: Bruscantini, C.A., Perna, P., Ferrazzoli, P., Grings, F., Karszenbaum, H., Crow, W.T.
Formato: JOUR
Materias:
Aquarius
OSSE
Radiative transfer model
Soil moisture
Theoretical model
Electromagnetic wave emission
AQUARIUS
Forward and inverse modeling
Observing system simulation experiments
Soil moisture estimation
Theoretical modeling
Vegetation scattering
Computer simulation
accuracy assessment
emissivity
radiative transfer
satellite data
satellite imagery
scattering
soil analysis
soil moisture
Acceso en línea:http://hdl.handle.net/20.500.12110/paper_19391404_v7_n3_p1123_Bruscantini
Aporte de:
Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA) de Universidad de Buenos Aires
id todo:paper_19391404_v7_n3_p1123_Bruscantini
record_format dspace
spelling todo:paper_19391404_v7_n3_p1123_Bruscantini2023-10-03T16:36:46Z Effect of forward/inverse model asymmetries over retrieved soil moisture assessed with an OSSE for the Aquarius/SAC-D mission Bruscantini, C.A. Perna, P. Ferrazzoli, P. Grings, F. Karszenbaum, H. Crow, W.T. 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 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. JOUR info:eu-repo/semantics/openAccess http://creativecommons.org/licenses/by/2.5/ar http://hdl.handle.net/20.500.12110/paper_19391404_v7_n3_p1123_Bruscantini
institution Universidad de Buenos Aires
institution_str I-28
repository_str R-134
collection Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA)
topic 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
spellingShingle 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
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
topic_facet 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
description 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.
format JOUR
author Bruscantini, C.A.
Perna, P.
Ferrazzoli, P.
Grings, F.
Karszenbaum, H.
Crow, W.T.
author_facet Bruscantini, C.A.
Perna, P.
Ferrazzoli, P.
Grings, F.
Karszenbaum, H.
Crow, W.T.
author_sort Bruscantini, C.A.
title Effect of forward/inverse model asymmetries over retrieved soil moisture assessed with an OSSE for the Aquarius/SAC-D mission
title_short Effect of forward/inverse model asymmetries over retrieved soil moisture assessed with an OSSE for the Aquarius/SAC-D mission
title_full Effect of forward/inverse model asymmetries over retrieved soil moisture assessed with an OSSE for the Aquarius/SAC-D mission
title_fullStr Effect of forward/inverse model asymmetries over retrieved soil moisture assessed with an OSSE for the Aquarius/SAC-D mission
title_full_unstemmed Effect of forward/inverse model asymmetries over retrieved soil moisture assessed with an OSSE for the Aquarius/SAC-D mission
title_sort effect of forward/inverse model asymmetries over retrieved soil moisture assessed with an osse for the aquarius/sac-d mission
url http://hdl.handle.net/20.500.12110/paper_19391404_v7_n3_p1123_Bruscantini
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