文献类型：期刊文献

英文题名：Response of chlorophyll-a to rainfall event in the basin of the South China sea: Statistical analysis

作者：He, Tao[1,3];Li, Junyi[1,2];Xie, Lingling[1];Zheng, Quanan[1]

机构：[1]Guangdong Ocean Univ, Coll Ocean & Meteorol, Lab Coastal Ocean Variat & Disaster Predict, Zhanjiang 524088, Peoples R China;[2]Key Lab Continents Deep Sea Climate Sources & Envi, Zhanjiang 524088, Peoples R China;[3]MNR, Key Lab Space Ocean Remote Sensing & Applicat, Beijing 100081, Peoples R China

年份：2024

卷号：199

外文期刊名：MARINE ENVIRONMENTAL RESEARCH

收录：SCI-EXPANDED(收录号：WOS:001298520500001)、、EI(收录号：20242316211866)、Scopus(收录号：2-s2.0-85195075691)、WOS

基金：This research was funded by the National Natural Science Foundation of China (42276019, 42176184, 41706025) ; Natural Science Foundation of Guangdong Province (2024A1515012572) ; Innovation Team Plan for Universities in Guangdong Province (2019KCXTF021, 2023KCXTD015) ; Guangdong Provincial Observation and Research Station for Tropical Ocean Environment in Western Coastal Waters.

语种：英文

外文摘要：Chlorophyll-a (Chl-a) is an essential ecological indicator, and affected by processes such as typhoons, mesoscale eddies, and Rossby waves. However, the impact of more frequent and widespread precipitation events on Chl-a seems to be overlooked. This study utilized remote sensing datand reanalysis data to investigate the response of Chl-a to 240 precipitation events in the central South China Sea from 2005 to 2019. The results indicate that precipitation events have a significant impact on Chl-a concentration. Following a precipitation event in 2019, the Chl-a concentration in the affected area increased by approximately 0.22 mg m(-3) from the 3rd to the 7th day. The reasons for the increase in Chl-a concentration were the vertical mixing induced by wind stirring and the upwelling caused by wind stress curl, which transported nutrients to the euphotic zone, lowering the sea surface temperature and triggering a proliferation of phytoplankton. Additionally, dissolved nutrients in precipitation provided a nutrient source for Chl-a growth. The contributions of nutrient supply, wind speed, and wind stress curl to the increase in Chl-a concentration during precipitation events were 18%, 37%, and 45%, respectively. Precipitation events enhanced marine primary productivity, playing a crucial role in deepening our understanding of ocean-atmosphere interactions and their impact on marine ecosystem.