MEMLS3&a: Microwave Emission Model of Layered Snowpacks adapted to include backscattering
The Microwave Emission Model of Layered Snowpacks (MEMLS) was originally developed for microwave emissions of snowpacks in the frequency range 5–100 GHz. It is based on six-flux theory to describe radiative transfer in snow including absorption, multiple volume scattering, radiation trapping due to...
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Copernicus Publications
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ftnonlinearchiv:oai:noa.gwlb.de:cop_mods_00015400 2023-05-15T18:20:17+02:00 MEMLS3&a: Microwave Emission Model of Layered Snowpacks adapted to include backscattering Proksch, M. Mätzler, C. Wiesmann, A. Lemmetyinen, J. Schwank, M. Löwe, H. Schneebeli, M. 2015-08 electronic https://doi.org/10.5194/gmd-8-2611-2015 https://noa.gwlb.de/receive/cop_mods_00015400 https://noa.gwlb.de/servlets/MCRFileNodeServlet/cop_derivate_00015355/gmd-8-2611-2015.pdf https://gmd.copernicus.org/articles/8/2611/2015/gmd-8-2611-2015.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-8-2611-2015 https://noa.gwlb.de/receive/cop_mods_00015400 https://noa.gwlb.de/servlets/MCRFileNodeServlet/cop_derivate_00015355/gmd-8-2611-2015.pdf https://gmd.copernicus.org/articles/8/2611/2015/gmd-8-2611-2015.pdf uneingeschränkt info:eu-repo/semantics/openAccess article Verlagsveröffentlichung article Text doc-type:article 2015 ftnonlinearchiv https://doi.org/10.5194/gmd-8-2611-2015 2022-02-08T22:54:37Z The Microwave Emission Model of Layered Snowpacks (MEMLS) was originally developed for microwave emissions of snowpacks in the frequency range 5–100 GHz. It is based on six-flux theory to describe radiative transfer in snow including absorption, multiple volume scattering, radiation trapping due to internal reflection and a combination of coherent and incoherent superposition of reflections between horizontal layer interfaces. Here we introduce MEMLS3&a, an extension of MEMLS, which includes a backscatter model for active microwave remote sensing of snow. The reflectivity is decomposed into diffuse and specular components. Slight undulations of the snow surface are taken into account. The treatment of like- and cross-polarization is accomplished by an empirical splitting parameter q. MEMLS3&a (as well as MEMLS) is set up in a way that snow input parameters can be derived by objective measurement methods which avoid fitting procedures of the scattering efficiency of snow, required by several other models. For the validation of the model we have used a combination of active and passive measurements from the NoSREx (Nordic Snow Radar Experiment) campaign in Sodankylä, Finland. We find a reasonable agreement between the measurements and simulations, subject to uncertainties in hitherto unmeasured input parameters of the backscatter model. The model is written in Matlab and the code is publicly available for download through the following website: http://www.iapmw.unibe.ch/research/projects/snowtools/memls.html. Article in Journal/Newspaper Sodankylä Niedersächsisches Online-Archiv NOA Sodankylä ENVELOPE(26.600,26.600,67.417,67.417) Geoscientific Model Development 8 8 2611 2626 |
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Niedersächsisches Online-Archiv NOA |
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English |
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article Verlagsveröffentlichung |
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article Verlagsveröffentlichung Proksch, M. Mätzler, C. Wiesmann, A. Lemmetyinen, J. Schwank, M. Löwe, H. Schneebeli, M. MEMLS3&a: Microwave Emission Model of Layered Snowpacks adapted to include backscattering |
topic_facet |
article Verlagsveröffentlichung |
description |
The Microwave Emission Model of Layered Snowpacks (MEMLS) was originally developed for microwave emissions of snowpacks in the frequency range 5–100 GHz. It is based on six-flux theory to describe radiative transfer in snow including absorption, multiple volume scattering, radiation trapping due to internal reflection and a combination of coherent and incoherent superposition of reflections between horizontal layer interfaces. Here we introduce MEMLS3&a, an extension of MEMLS, which includes a backscatter model for active microwave remote sensing of snow. The reflectivity is decomposed into diffuse and specular components. Slight undulations of the snow surface are taken into account. The treatment of like- and cross-polarization is accomplished by an empirical splitting parameter q. MEMLS3&a (as well as MEMLS) is set up in a way that snow input parameters can be derived by objective measurement methods which avoid fitting procedures of the scattering efficiency of snow, required by several other models. For the validation of the model we have used a combination of active and passive measurements from the NoSREx (Nordic Snow Radar Experiment) campaign in Sodankylä, Finland. We find a reasonable agreement between the measurements and simulations, subject to uncertainties in hitherto unmeasured input parameters of the backscatter model. The model is written in Matlab and the code is publicly available for download through the following website: http://www.iapmw.unibe.ch/research/projects/snowtools/memls.html. |
format |
Article in Journal/Newspaper |
author |
Proksch, M. Mätzler, C. Wiesmann, A. Lemmetyinen, J. Schwank, M. Löwe, H. Schneebeli, M. |
author_facet |
Proksch, M. Mätzler, C. Wiesmann, A. Lemmetyinen, J. Schwank, M. Löwe, H. Schneebeli, M. |
author_sort |
Proksch, M. |
title |
MEMLS3&a: Microwave Emission Model of Layered Snowpacks adapted to include backscattering |
title_short |
MEMLS3&a: Microwave Emission Model of Layered Snowpacks adapted to include backscattering |
title_full |
MEMLS3&a: Microwave Emission Model of Layered Snowpacks adapted to include backscattering |
title_fullStr |
MEMLS3&a: Microwave Emission Model of Layered Snowpacks adapted to include backscattering |
title_full_unstemmed |
MEMLS3&a: Microwave Emission Model of Layered Snowpacks adapted to include backscattering |
title_sort |
memls3&a: microwave emission model of layered snowpacks adapted to include backscattering |
publisher |
Copernicus Publications |
publishDate |
2015 |
url |
https://doi.org/10.5194/gmd-8-2611-2015 https://noa.gwlb.de/receive/cop_mods_00015400 https://noa.gwlb.de/servlets/MCRFileNodeServlet/cop_derivate_00015355/gmd-8-2611-2015.pdf https://gmd.copernicus.org/articles/8/2611/2015/gmd-8-2611-2015.pdf |
long_lat |
ENVELOPE(26.600,26.600,67.417,67.417) |
geographic |
Sodankylä |
geographic_facet |
Sodankylä |
genre |
Sodankylä |
genre_facet |
Sodankylä |
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-8-2611-2015 https://noa.gwlb.de/receive/cop_mods_00015400 https://noa.gwlb.de/servlets/MCRFileNodeServlet/cop_derivate_00015355/gmd-8-2611-2015.pdf https://gmd.copernicus.org/articles/8/2611/2015/gmd-8-2611-2015.pdf |
op_rights |
uneingeschränkt info:eu-repo/semantics/openAccess |
op_doi |
https://doi.org/10.5194/gmd-8-2611-2015 |
container_title |
Geoscientific Model Development |
container_volume |
8 |
container_issue |
8 |
container_start_page |
2611 |
op_container_end_page |
2626 |
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1766197798401736704 |