Polarimetric microwave wind radiometer model function and retrieval testing for WindSat

Yueh, Simon; Wilson, William J.; Dinardo, S. J.; Hsiao, S. V.

doi:10.1109/tgrs.2005.858416

Cited by 55 publications

(38 citation statements)

References 19 publications

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“…The amplitudes of e 2v and e 2h are about the same although the sign of e 2h is negative. The characteristics of e p1 and e p2 are similar to those of higher-frequency (10-37 GHz) radiometer data [Yueh et al, 1999;Yueh et al, 2006;Yueh, 2008].…”

Section: Aquarius Geophysical Model Functionsupporting

confidence: 67%

Aquarius geophysical model function and combined active passive algorithm for ocean surface salinity and wind retrieval

et al. 2014

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This paper describes the updated Combined Active-Passive (CAP) retrieval algorithm for simultaneous retrieval of surface salinity and wind from Aquarius' brightness temperature and radar backscatter. Unlike the algorithm developed by Remote Sensing Systems (RSS), implemented in the Aquarius Data Processing System (ADPS) to produce Aquarius standard products, the Jet Propulsion Laboratory's CAP algorithm does not require monthly climatology SSS maps for the salinity retrieval. Furthermore, the ADPS-RSS algorithm fully uses the National Center for Environmental Predictions (NCEP) wind for data correction, while the CAP algorithm uses the NCEP wind only as a constraint. The major updates to the CAP algorithm include the galactic reflection correction, Faraday rotation, Antenna Pattern Correction, and geophysical model functions of wind or wave impacts. Recognizing the limitation of geometric optics scattering, we improve the modeling of the reflection of galactic radiation; the results are better salinity accuracy and significantly reduced ascending-descending bias. We assess the accuracy of CAP's salinity by comparison with ARGO monthly gridded salinity products provided by the Asia-Pacific Data-Research Center (APDRC) and Japan Agency for Marine-Earth Science and Technology (JAMSTEC). The RMS differences between Aquarius CAP and APDRC's or JAMSTEC's ARGO salinities are less than 0.2 psu for most parts of the ocean, except for the regions in the Intertropical Convergence Zone, near the outflow of major rivers and at high latitudes.

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Section: Aquarius Geophysical Model Functionsupporting

confidence: 67%

Aquarius geophysical model function and combined active passive algorithm for ocean surface salinity and wind retrieval

et al. 2014

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“…This tool can provide scientists and forecasters with vital information for understanding and studying global weather and climate change. Microwave radiometers have long been used to measure ocean surface winds [1][2][3][4][5][6][7][8][9][10][11][12][13][14][15][16][17]. The first Special Sensor Microwave Imager (SSM/I) onboard Defense Meteorological Satellite Program (DMSP) was launched in July 1987, making it possible to estimate global ocean surface winds from a spaceborne passive microwave instrument.…”

Section: Introductionmentioning

confidence: 99%

Comparison of Wind Speeds from Spaceborne Microwave Radiometers with In Situ Observations and ECMWF Data over the Global Ocean

et al. 2018

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“…The correlation terms (third and fourth Stokes parameters) are also of interest in themselves as potential new tools for remote sensing from space. For example, WindSat demonstrated the use of the third Stokes parameter to indicate wind direction [8], [9], and other applications have been suggested [10], [11]. In addition, theory suggests that spurious signals (false indication of correlation) can also occur in the third Stokes parameter [12].…”

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Aquarius Third Stokes Parameter Measurements: Initial Results

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Abraham

Utku

et al. 2013

IEEE Geosci. Remote Sensing Lett.

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This letter reports a first look at the polarimetric (third Stokes parameter) channel on the Aquarius L-band radiometer that was launched in June of 2011 on the Aquarius/ Satélite de Aplicaciones Cientificas (SAC)-D observatory. The primary purpose of the polarimetric channel is to provide an in situ measure of Faraday rotation which can be important for remote sensing at L-band, particularly in the case of sea surface salinity. However, it also provides an additional mode of observation and a chance to look for new features of the surface. Initial results show good agreement with expectations. In particular, the values of retrieved Faraday rotation agree with predicted values, and a nonzero signal is seen to occur over mixed scenes as predicted by theory.

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Polarimetric microwave wind radiometer model function and retrieval testing for WindSat

Cited by 55 publications

References 19 publications

Aquarius geophysical model function and combined active passive algorithm for ocean surface salinity and wind retrieval

Aquarius geophysical model function and combined active passive algorithm for ocean surface salinity and wind retrieval

Comparison of Wind Speeds from Spaceborne Microwave Radiometers with In Situ Observations and ECMWF Data over the Global Ocean

Aquarius Third Stokes Parameter Measurements: Initial Results

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