Satellite observations of rainfall effect on sea surface salinity in the waters adjacent to Taiwan

Chung Ru Ho, Po Chun Hsu, Chen Chih Lin, Shih Jen Huang

研究成果: 書貢獻/報告類型會議論文篇章同行評審

摘要

Changes of oceanic salinity are highly related to the variations of evaporation and precipitation. To understand the influence of rainfall on the sea surface salinity (SSS) in the waters adjacent to Taiwan, satellite remote sensing data from the year of 2012 to 2014 are employed in this study. The daily rain rate data obtained from Special Sensor Microwave Imager (SSM/I), Tropical Rainfall Measuring Mission's Microwave Imager (TRMM/TMI), Advanced Microwave Scanning Radiometer (AMSR), and WindSat Polarimetric Radiometer. The SSS data was derived from the measurements of radiometer instruments onboard the Aquarius satellite. The results show the average values of SSS in east of Taiwan, east of Luzon and South China Sea are 33.83 psu, 34.05 psu, and 32.84 psu, respectively, in the condition of daily rain rate higher than 1 mm/hr. In contrast to the rainfall condition, the average values of SSS are 34.07 psu, 34.26 psu, and 33.09 psu in the three areas, respectively at no rain condition (rain rate less than 1 mm/hr). During the cases of heavy rainfall caused by spiral rain bands of typhoon, the SSS is diluted with an average value of -0.78 psu when the average rain rate is higher than 4 mm/hr. However, the SSS was increased after temporarily decreased during the typhoon cases. A possible reason to explain this phenomenon is that the heavy rainfall caused by the spiral rain bands of typhoon may dilute the sea surface water, but the strong winds can uplift the higher salinity of subsurface water to the sea surface.

原文???core.languages.en_GB???
主出版物標題Remote Sensing of the Ocean, Sea Ice, Coastal Waters, and Large Water Regions 2017
編輯Charles R. Bostater, Xavier Neyt, Stelios P. Mertikas, Sergey Babichenko
發行者SPIE
ISBN(電子)9781510613089
DOIs
出版狀態已出版 - 2017
事件Remote Sensing of the Ocean, Sea Ice, Coastal Waters, and Large Water Regions 2017 - Warsaw, Poland
持續時間: 11 9月 201712 9月 2017

出版系列

名字Proceedings of SPIE - The International Society for Optical Engineering
10422
ISSN(列印)0277-786X
ISSN(電子)1996-756X

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???event.eventtypes.event.conference???Remote Sensing of the Ocean, Sea Ice, Coastal Waters, and Large Water Regions 2017
國家/地區Poland
城市Warsaw
期間11/09/1712/09/17

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