文献类型：期刊文献

英文题名：Physical and Biochemical Responses to Sequential Tropical Cyclones in the Arabian Sea

作者：Wang, Tongyu[1,2];Chen, Fajin[2];Zhang, Shuwen[1];Pan, Jiayi[3];Devlin, Adam T.[3];Ning, Hao[2];Zeng, Weiqiang[2]

机构：[1]Shantou Univ, Inst Marine Sci, Shantou 515063, Peoples R China;[2]Guangdong Ocean Univ, Coll Ocean & Meteorol, Zhanjiang 524088, Peoples R China;[3]Jiangxi Normal Univ, Sch Geog & Environm, Nanchang 330022, Jiangxi, Peoples R China

年份：2022

卷号：14

期号：3

外文期刊名：REMOTE SENSING

收录：SCI-EXPANDED(收录号：WOS:000756235200001)、、EI(收录号：20220511542945)、Scopus(收录号：2-s2.0-85123422106)、WOS

基金：This research was funded by Scientific Research Start-Up Foundation of Shantou University (NTF20006), Innovation and Entrepreneurship Project of Shantou (2021112176541391), Guangdong Natural Science Foundation of China (2016A030312004), National Natural Science Foundation of China (U1901213, 40876005, 41676008) and Scientific Research Start-Up Foundation of Jiangxi Normal University and the General Research Fund of Hong Kong Research Grants Council (RGC) (CUHK 14303818). We sincerely thank the anonymous reviewers for their valuable constructive comments that helped to improve our manuscript.

语种：英文

外文关键词：sequential tropical cyclones; physical and biochemical response; chlorophyll-a; Bio-Argo floats; Arabian sea

外文摘要：The upper-ocean physical and biochemical responses to sequential tropical cyclones (TCs) Kyarr and Maha in the Arabian Sea (AS) were investigated using data from satellites and Bio-Argo floats. Corresponding to slow and strong sequential TCs, two cooling processes and two short chlorophyll a (chl-a) blooms occurred on the sea surface, separated by 6-7 days, and three cold eddies appeared near the TC paths, with sea surface temperatures dropping more than 6 degrees C. Phytoplankton blooms occurred near cold eddies e1, e2, and e3, with chl-a concentrations reaching 12.76, 23.09, and 16.51 mg/m(3), respectively. The depth-integrated chl-a analysis confirmed that the first chl-a enhancement was related to the redistribution of chl-a associated with TC-induced Ekman pumping and vertical mixing at the base of the mixed layer post-TC Kyarr. The subsequent, more pronounced chl-a bloom occurred due to the net growth of phytoplankton, as nutrient-rich cold waters were brought into the euphotic layer through Ekman pumping, entrainment, and eddy pumping post-TC Maha. Upwelling (vertical mixing) was the dominant process allowing the resupply of nutrients near (on the right side of) the TC path. The results derived from a biogeochemistry model indicated that the chl-a evolution was consistent with the observations recorded on Bio-Argo floats. This study suggests that in sequential TC-induced phytoplankton blooms, the redistribution of chl-a is a major mechanism for the first bloom, when high chl-a concentrations occur in the subsurface layer, whereas the second bloom is fueled by nutrients supplied from the deep layer.