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Title: Soil Moisture Retrieval Using the Aquarius/SAC-D Instruments

item Jackson, Thomas

Submitted to: Meeting Abstract
Publication Type: Abstract Only
Publication Acceptance Date: 11/15/2008
Publication Date: 12/3/2008
Citation: Jackson, T.J. 2008. Soil moisture retrieval using the Aquarius/SAC-D instruments [abstract]. 4th Aquarius/SAC-D Science Workshop. 2008 CDROM.

Interpretive Summary:

Technical Abstract: Aquarius/SAC-D will share common elements with several current and future satellite missions that provide soil moisture. Passive microwave soil moisture retrieval using low frequencies is currently performed using Aqua Advanced Microwave Scanning Radiometer-E (AMSR-E) (C/X-band). This will extended to L-band with the Soil Moisture Ocean Salinity (SMOS) mission next year. Baseline algorithms for Aquarius/SAC-D can be implemented that utilize only the passive L-band observations. However, it has also been shown that enhanced retrievals are possible by integrating the visible, infrared, and higher frequency microwave observations, all of which the Aquarius/SAC-D platform will provide. In addition, active microwave observations provide different information than the passive. Our knowledge base on this topic is being developed. The Soil Moisture Active Passive Mission (SMAP), which is scheduled for 2013, is exploring individual as well as combined retrieval techniques that might be evaluated using Aquarius/SAC-D data. In this presentation the various algorithm approaches will be described. Complementary aspects (sensors, validation, applications) of the Aquarius/SAC-D and SMAP missions related to soil moisture will be discussed.