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A microwave radiance assimilation study for a tundra snowpack
| Content Provider | NASA Technical Reports Server (NTRS) |
|---|---|
| Author | Durand, Michael England, Anthony Kim, Edward Margulis, Steve |
| Copyright Year | 2010 |
| 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? |
| File Size | 349102 |
| Page Count | 3 |
| File Format | |
| Alternate Webpage(s) | http://archive.org/details/NASA_NTRS_Archive_20100032938 |
| Archival Resource Key | ark:/13960/t42r8tc00 |
| Language | English |
| Publisher Date | 2010-07-26 |
| Access Restriction | Open |
| Subject Keyword | Earth Resources And Remote Sensing Assimilation Snow Radiance Brightness Snow Cover Tundra Microwaves Microwave Emission Ntrs Nasa Technical Reports Server (ntrs) Nasa Technical Reports Server Aerodynamics Aircraft Aerospace Engineering Aerospace Aeronautic Space Science |
| Content Type | Text |
| Resource Type | Article |
