First Assessment of CyGNSS-Incorporated SMAP Sea Surface Salinity Retrieval Over Pan-Tropical Ocean
| Autor: | Rui Ji, Baojian Liu, Zhizhou Guo, Guoqiang Tang, Wei Wan, Tsechun Wang, Yang Hong, Yaokui Cui |
|---|---|
| Jazyk: | angličtina |
| Rok vydání: | 2021 |
| Předmět: |
Atmospheric Science
Radiometer QC801-809 Geophysics. Cosmic physics Scatterometer Numerical weather prediction Wind speed Ocean engineering Sea surface temperature soil moisture active and passive (SMAP) GNSS-reflectometry Cyclone global navigation satellite system (CyGNSS) Environmental science Radiometry Satellite microwave radiometry ocean salinity Computers in Earth Sciences Significant wave height TC1501-1800 ocean wind Remote sensing |
| Zdroj: | IEEE Journal of Selected Topics in Applied Earth Observations and Remote Sensing, Vol 14, Pp 12163-12173 (2021) |
| ISSN: | 2151-1535 |
| Popis: | In sea surface salinity (SSS) retrieval using L-band passive radiometry, radiometer-independent ocean wind speed is needed as auxiliary data. Wind speed data from scatterometer and weather models are commonly used as auxiliary data in satellite SSS missions. This article's overarching goal is to explore the feasibility of incorporating the cyclone global navigation satellite system (CyGNSS) data into the SSS retrieval algorithm of the soil moisture active and passive (SMAP) mission over tropical and subtropical oceans. As a proof-of-concept study, empirical geophysical model functions in the retrieval algorithm are developed using the statistics of collocated SMAP, CyGNSS, and referenced buoys measurements. The SSS accuracy of CyGNSS-incorporated salinity retrieval is investigated against the SMAP SSS data product. Comparisons show that the proposed CyGNSS-incorporated retrieval algorithm improves the SSS accuracy by 0.1∼0.2 psu at low wind speed ( |
| Databáze: | OpenAIRE |
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