期刊
IEEE ACCESS
卷 9, 期 -, 页码 152938-152944出版社
IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC
DOI: 10.1109/ACCESS.2021.3125605
关键词
Ocean temperature; Sea surface; Oceans; Wind speed; Surface topography; Meteorology; Humidity; Tropical cyclone Seroja; chlorophyll-a; sea surface temperature; Savu Sea
资金
- Universitas Gadjah Mada [1519/UN1/DITLIT/DIT-LIT/PT/2020]
- Ministry of Education, Culture, Research, and Technology, Indonesia
Using satellite measurements, it was found that TC Seroja caused strong upwelling and vertical mixing in the Savu Sea, leading to phytoplankton blooms and a decrease in sea surface temperatures. This resulted in an increase in chlorophyll-a concentrations and a cooling of the sea surface temperatures by up to 3 degrees C.
Tropical cyclone (TC) Seroja was a rare climatic event in the Indonesian Seas, particularly in the Savu Sea. This unprecedented event, which occurred on April 4, 2021, caused fatalities and severe damage to the region's infrastructure and economy. High spatio-temporal resolution satellite measurements of surface winds (Cross-Calibrated Multi-Platform), surface chlorophyll-a (Himawari-8), and sea surface temperature (SST; RSS OISST) are used to disentangle the impact of extreme wind speed (>10m.s(-1)) on chlorophyll-a and SST. High wind speed associated with TC Seroja induced strong upwelling and vertical mixing in the Savu Sea, which led to phytoplankton blooms and SST depression. An abrupt change of daily variability and positive anomaly in phytoplankton chlorophyll-a concentrations reaches 13 mg.m(-3) and 0.3 mg.m(-3), respectively. At the same time, the SST shows significant cooling up to 3 degrees C. Our results provide novel insights on the exceptional occurrence of a TC within the Indonesian Seas and highlight its impact on chlorophyll-a and SST.
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