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Proceedings Paper

Applications of SMAP data to retrieval of ocean surface wind and salinity
Author(s): Simon Yueh; Alexander Fore; Wenqing Tang; Akiko Hayashi; Bryan Stiles; Fuqing Zhang; Yonghui Weng; Nicolas Real
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Paper Abstract

We have examined the L-band radiometer and radar data from NASA’s Soil Moisture Active Passive (SMAP) mission for ocean research and applications. We find that the SMAP data are in excellent agreement with the geophysical model function (GMF) derived from the Aquarius data up to a wind speed of 20 ms-1. For severe wind conditions, the higher resolution data from SMAP allowed us to assess the sensitivity of L-band radiometer signals to hurricane force winds. We applied the L-band GMF to the retrieval of ocean surface wind and SSS from the SMAP data. Comparison with the European Center for Medium-Range Weather Forecasting, WindSat and RapidSCAT wind speeds suggests that SMAP’s radiometer wind speed reaches an excellent accuracy of about 1.1-1.7 ms-1 below a wind speed of 20 ms-1. We have also found that the maximum wind speed derived from the SMAP radiometer data can reach 140 knots for severe storms and are generally in good agreement with the hurricane track analysis and operational aircraft Stepped Frequency Microwave Radiometer wind speeds. The spatial patterns of the SMAP SSS agree well with climatological distributions, but exhibit several unique spatial and temporal features.

Paper Details

Date Published: 19 October 2016
PDF: 8 pages
Proc. SPIE 9999, Remote Sensing of the Ocean, Sea Ice, Coastal Waters, and Large Water Regions 2016, 99990F (19 October 2016); doi: 10.1117/12.2240710
Show Author Affiliations
Simon Yueh, California Institute of Technology (United States)
Alexander Fore, California Institute of Technology (United States)
Wenqing Tang, California Institute of Technology (United States)
Akiko Hayashi, California Institute of Technology (United States)
Bryan Stiles, California Institute of Technology (United States)
Fuqing Zhang, The Pennsylvania State Univ. (United States)
Yonghui Weng, The Pennsylvania State Univ. (United States)
Nicolas Real, Institut Français de Recherche et d'Exploitation de la MER (France)


Published in SPIE Proceedings Vol. 9999:
Remote Sensing of the Ocean, Sea Ice, Coastal Waters, and Large Water Regions 2016
Charles R. Bostater; Stelios P. Mertikas; Xavier Neyt; Caroline Nichol; Oscar Aldred, Editor(s)

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