A Microwave Radiance Assimilation Study for a Tundra Snowpack
Recent studies have begun exploring the assimilation of microwave radiances for the modeling and retrieval of snow properties. At a point scale, and for short durations (i week), radiance assimilation (RA) results are encouraging. However, in order to determine how practical RA might be for snow ret...
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ftnasantrs:oai:casi.ntrs.nasa.gov:20100032938 2023-05-15T17:40:15+02:00 A Microwave Radiance Assimilation Study for a Tundra Snowpack Margulis, Steve Kim, Edward England, Anthony Durand, Michael Unclassified, Unlimited, Publicly available July 26, 2010 application/pdf http://hdl.handle.net/2060/20100032938 unknown Document ID: 20100032938 http://hdl.handle.net/2060/20100032938 Copyright, Distribution as joint owner in the copyright CASI Earth Resources and Remote Sensing 2010 IEEE International Geoscience and Remote Sensing Symposium. Remote Sensing: Global Vision for Local Action; 25-30 Jul. 2010; Honolulu, HI; United States 2010 ftnasantrs 2019-07-21T01:11:43Z Recent studies have begun exploring the assimilation of microwave radiances for the modeling and retrieval of snow properties. At a point scale, and for short durations (i week), radiance assimilation (RA) results are encouraging. However, in order to determine how practical RA might be for snow retrievals when applied over longer durations, larger spatial scales, and/or different snow types, we must expand the scope of the tests. In this paper we use coincident microwave radiance measurements and station data from a tundra site on the North Slope of Alaska. The field data are from the 3rd Radio-brightness Energy Balance Experiment (REBEX-3) carried out in 1994-95 by the University of Michigan. This dataset will provide a test of RA over months instead of one week, and for a very different type of snow than previous snow RA studies. We will address the following questions: flow well can a snowpack physical model (SM), forced with local weather, match measured conditions for a tundra snowpack?; How well can a microwave emission model, driven by the snowpack model, match measured microwave brightnesses for a tundra snowpack?; How well does RA increase or decrease the fidelity of estimates of snow depth and temperatures for a tundra snowpack? Other/Unknown Material north slope Tundra Alaska NASA Technical Reports Server (NTRS) |
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Open Polar |
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NASA Technical Reports Server (NTRS) |
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ftnasantrs |
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topic |
Earth Resources and Remote Sensing |
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Earth Resources and Remote Sensing Margulis, Steve Kim, Edward England, Anthony Durand, Michael A Microwave Radiance Assimilation Study for a Tundra Snowpack |
topic_facet |
Earth Resources and Remote Sensing |
description |
Recent studies have begun exploring the assimilation of microwave radiances for the modeling and retrieval of snow properties. At a point scale, and for short durations (i week), radiance assimilation (RA) results are encouraging. However, in order to determine how practical RA might be for snow retrievals when applied over longer durations, larger spatial scales, and/or different snow types, we must expand the scope of the tests. In this paper we use coincident microwave radiance measurements and station data from a tundra site on the North Slope of Alaska. The field data are from the 3rd Radio-brightness Energy Balance Experiment (REBEX-3) carried out in 1994-95 by the University of Michigan. This dataset will provide a test of RA over months instead of one week, and for a very different type of snow than previous snow RA studies. We will address the following questions: flow well can a snowpack physical model (SM), forced with local weather, match measured conditions for a tundra snowpack?; How well can a microwave emission model, driven by the snowpack model, match measured microwave brightnesses for a tundra snowpack?; How well does RA increase or decrease the fidelity of estimates of snow depth and temperatures for a tundra snowpack? |
format |
Other/Unknown Material |
author |
Margulis, Steve Kim, Edward England, Anthony Durand, Michael |
author_facet |
Margulis, Steve Kim, Edward England, Anthony Durand, Michael |
author_sort |
Margulis, Steve |
title |
A Microwave Radiance Assimilation Study for a Tundra Snowpack |
title_short |
A Microwave Radiance Assimilation Study for a Tundra Snowpack |
title_full |
A Microwave Radiance Assimilation Study for a Tundra Snowpack |
title_fullStr |
A Microwave Radiance Assimilation Study for a Tundra Snowpack |
title_full_unstemmed |
A Microwave Radiance Assimilation Study for a Tundra Snowpack |
title_sort |
microwave radiance assimilation study for a tundra snowpack |
publishDate |
2010 |
url |
http://hdl.handle.net/2060/20100032938 |
op_coverage |
Unclassified, Unlimited, Publicly available |
genre |
north slope Tundra Alaska |
genre_facet |
north slope Tundra Alaska |
op_source |
CASI |
op_relation |
Document ID: 20100032938 http://hdl.handle.net/2060/20100032938 |
op_rights |
Copyright, Distribution as joint owner in the copyright |
_version_ |
1766141124378886144 |