SMRT: an active–passive microwave radiative transfer model for snow with multiple microstructure and scattering formulations (v1.0)
The Snow Microwave Radiative Transfer (SMRT) thermal emission and backscatter model was developed to determine uncertainties in forward modeling through intercomparison of different model ingredients. The model differs from established models by the high degree of flexibility in switching between di...
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Copernicus Publications
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ftnonlinearchiv:oai:noa.gwlb.de:cop_mods_00005318 2023-05-15T18:18:32+02:00 SMRT: an active–passive microwave radiative transfer model for snow with multiple microstructure and scattering formulations (v1.0) Picard, Ghislain Sandells, Melody Löwe, Henning 2018-07 electronic https://doi.org/10.5194/gmd-11-2763-2018 https://noa.gwlb.de/receive/cop_mods_00005318 https://noa.gwlb.de/servlets/MCRFileNodeServlet/cop_derivate_00005275/gmd-11-2763-2018.pdf https://gmd.copernicus.org/articles/11/2763/2018/gmd-11-2763-2018.pdf eng eng Copernicus Publications Geoscientific Model Development -- http://www.bibliothek.uni-regensburg.de/ezeit/?2456725 -- http://www.geosci-model-dev.net/ -- 1991-9603 https://doi.org/10.5194/gmd-11-2763-2018 https://noa.gwlb.de/receive/cop_mods_00005318 https://noa.gwlb.de/servlets/MCRFileNodeServlet/cop_derivate_00005275/gmd-11-2763-2018.pdf https://gmd.copernicus.org/articles/11/2763/2018/gmd-11-2763-2018.pdf https://creativecommons.org/licenses/by/4.0/ uneingeschränkt info:eu-repo/semantics/openAccess CC-BY article Verlagsveröffentlichung article Text doc-type:article 2018 ftnonlinearchiv https://doi.org/10.5194/gmd-11-2763-2018 2022-02-08T22:59:39Z The Snow Microwave Radiative Transfer (SMRT) thermal emission and backscatter model was developed to determine uncertainties in forward modeling through intercomparison of different model ingredients. The model differs from established models by the high degree of flexibility in switching between different electromagnetic theories, representations of snow microstructure, and other modules involved in various calculation steps. SMRT v1.0 includes the dense media radiative transfer theory (DMRT), the improved Born approximation (IBA), and independent Rayleigh scatterers to compute the intrinsic electromagnetic properties of a snow layer. In the case of IBA, five different formulations of the autocorrelation function to describe the snow microstructure characteristics are available, including the sticky hard sphere model, for which close equivalence between the IBA and DMRT theories has been shown here. Validation is demonstrated against established theories and models. SMRT was used to identify that several former studies conducting simulations with in situ measured snow properties are now comparable and moreover appear to be quantitatively nearly equivalent. This study also proves that a third parameter is needed in addition to density and specific surface area to characterize the microstructure. The paper provides a comprehensive description of the mathematical basis of SMRT and its numerical implementation in Python. Modularity supports model extensions foreseen in future versions comprising other media (e.g., sea ice, frozen lakes), different scattering theories, rough surface models, or new microstructure models. Article in Journal/Newspaper Sea ice Niedersächsisches Online-Archiv NOA Geoscientific Model Development 11 7 2763 2788 |
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English |
topic |
article Verlagsveröffentlichung |
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article Verlagsveröffentlichung Picard, Ghislain Sandells, Melody Löwe, Henning SMRT: an active–passive microwave radiative transfer model for snow with multiple microstructure and scattering formulations (v1.0) |
topic_facet |
article Verlagsveröffentlichung |
description |
The Snow Microwave Radiative Transfer (SMRT) thermal emission and backscatter model was developed to determine uncertainties in forward modeling through intercomparison of different model ingredients. The model differs from established models by the high degree of flexibility in switching between different electromagnetic theories, representations of snow microstructure, and other modules involved in various calculation steps. SMRT v1.0 includes the dense media radiative transfer theory (DMRT), the improved Born approximation (IBA), and independent Rayleigh scatterers to compute the intrinsic electromagnetic properties of a snow layer. In the case of IBA, five different formulations of the autocorrelation function to describe the snow microstructure characteristics are available, including the sticky hard sphere model, for which close equivalence between the IBA and DMRT theories has been shown here. Validation is demonstrated against established theories and models. SMRT was used to identify that several former studies conducting simulations with in situ measured snow properties are now comparable and moreover appear to be quantitatively nearly equivalent. This study also proves that a third parameter is needed in addition to density and specific surface area to characterize the microstructure. The paper provides a comprehensive description of the mathematical basis of SMRT and its numerical implementation in Python. Modularity supports model extensions foreseen in future versions comprising other media (e.g., sea ice, frozen lakes), different scattering theories, rough surface models, or new microstructure models. |
format |
Article in Journal/Newspaper |
author |
Picard, Ghislain Sandells, Melody Löwe, Henning |
author_facet |
Picard, Ghislain Sandells, Melody Löwe, Henning |
author_sort |
Picard, Ghislain |
title |
SMRT: an active–passive microwave radiative transfer model for snow with multiple microstructure and scattering formulations (v1.0) |
title_short |
SMRT: an active–passive microwave radiative transfer model for snow with multiple microstructure and scattering formulations (v1.0) |
title_full |
SMRT: an active–passive microwave radiative transfer model for snow with multiple microstructure and scattering formulations (v1.0) |
title_fullStr |
SMRT: an active–passive microwave radiative transfer model for snow with multiple microstructure and scattering formulations (v1.0) |
title_full_unstemmed |
SMRT: an active–passive microwave radiative transfer model for snow with multiple microstructure and scattering formulations (v1.0) |
title_sort |
smrt: an active–passive microwave radiative transfer model for snow with multiple microstructure and scattering formulations (v1.0) |
publisher |
Copernicus Publications |
publishDate |
2018 |
url |
https://doi.org/10.5194/gmd-11-2763-2018 https://noa.gwlb.de/receive/cop_mods_00005318 https://noa.gwlb.de/servlets/MCRFileNodeServlet/cop_derivate_00005275/gmd-11-2763-2018.pdf https://gmd.copernicus.org/articles/11/2763/2018/gmd-11-2763-2018.pdf |
genre |
Sea ice |
genre_facet |
Sea ice |
op_relation |
Geoscientific Model Development -- http://www.bibliothek.uni-regensburg.de/ezeit/?2456725 -- http://www.geosci-model-dev.net/ -- 1991-9603 https://doi.org/10.5194/gmd-11-2763-2018 https://noa.gwlb.de/receive/cop_mods_00005318 https://noa.gwlb.de/servlets/MCRFileNodeServlet/cop_derivate_00005275/gmd-11-2763-2018.pdf https://gmd.copernicus.org/articles/11/2763/2018/gmd-11-2763-2018.pdf |
op_rights |
https://creativecommons.org/licenses/by/4.0/ uneingeschränkt info:eu-repo/semantics/openAccess |
op_rightsnorm |
CC-BY |
op_doi |
https://doi.org/10.5194/gmd-11-2763-2018 |
container_title |
Geoscientific Model Development |
container_volume |
11 |
container_issue |
7 |
container_start_page |
2763 |
op_container_end_page |
2788 |
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1766195129759039488 |