The Soil Moisture Active and Passive Mission (SMAP): Science and Applications
Name
Entekhabi_The soil moisture.pdf
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284.97 KB
Format
Adobe PDF
Checksum (MD5)
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Author(s)
Entekhabi, Dara
O'Neill, Peggy E.
Njoku, Eni G.
Date Issued
May 2009
Journal
Proceedings of the IEEE Radar Conference 2009
Publisher
Institute of Electrical and Electronics Engineers (IEEE)
Citation
Entekhabi, Dara, Eni Njoku, and Peggy O’Neill. “The Soil Moisture Active and Passive Mission (SMAP): Science and Applications.” IEEE, 2009. 1–3. © Copyright 2009 IEEE
Version
Final published version
Abstract
The soil moisture active and passive mission (SMAP) will provide global maps of soil moisture content and surface freeze/thaw state. Global measurements of these variables are critical for terrestrial water and carbon cycle applications. The SMAP observatory consists of two multipolarization L-band sensors, a radar and radiometer, that share a deployable-mesh reflector antenna. The combined observations from the two sensors will allow accurate estimation of soil moisture at hydrometeorological (10 km) and hydroclimatological (40 km) spatial scales. The rotating antenna configuration provides conical scans of the Earth surface at a constant look angle. The wide-swath (1000 km) measurements will allow global mapping of soil moisture and its freeze/thaw state with 2-3 days revisit. Freeze/thaw in boreal latitudes will be mapped using the radar at 3 km resolution with 1-2 days revisit. The synergy of active and passive observations enables measurements of soil moisture and freeze/thaw state with unprecedented resolution, sensitivity, area coverage and revisit.
MIT Department
Massachusetts Institute of Technology. Department of Civil and Environmental Engineering
Terms of Use
Article is made available in accordance with the publisher's policy and may be subject to US copyright law. Please refer to the publisher's site for terms of use.
Persistent DSpace Link
DOI of Published Version
https://doi.org/10.1109/RADAR.2009.4977030
