FN Archimer Export Format PT J TI A Limited Effect of Sub-Tropical Typhoons on Phytoplankton Dynamics BT AF Chai, Fei Wang, Yuntao Xing, Xiaogang Yan, Yunwei Xue, Huijie Wells, Mark Boss, Emmanuel AS 1:1,2;2:1;3:1;4:1;5:2,3;6:2;7:2; FF 1:;2:;3:;4:;5:;6:;7:; C1 State Key Laboratory of Satellite Ocean Environment Dynamics, Second Institute of Oceanography, Ministry of Natural Resources, Hangzhou, 310012, China School of Marine Sciences, University of Maine, Orono, ME, 04469, USA State Key Laboratory of Tropical Oceanography, South China Sea Institute of Oceanology, Chinese Academy of Sciences, Guangzhou, 510301, China C2 SOA, CHINA UNIV MAINE US, USA CHINESE ACAD SCI, CHINA IN DOAJ TC 0 UR https://archimer.ifremer.fr/doc/00645/75667/76533.pdf https://archimer.ifremer.fr/doc/00645/75667/82148.pdf LA English DT Article AB Typhoons are assumed to stimulate ocean primary production through the upward mixing of nutrients into the surface ocean, based largely on observations of increased surface chlorophyll concentrations following the passage of typhoons. This surface chlorophyll enhancement, seen on occasion by satellites, more often is undetected due to intense cloud coverage. Daily data from a BGC-Argo profiling float revealed the upper-ocean response to Typhoon Trami in the Northwest Pacific Ocean. Temperature and chlorophyll changed rapidly, with a significant drop in sea surface temperature and surge in surface chlorophyll associated with strong vertical mixing, which was only partially captured by satellite observations. However, no net increase in vertically integrated chlorophyll was observed during Typhoon Trami or in its wake. Contrary to the prevailing dogma, the results show that typhoons likely have limited effect on net ocean primary production. Observed surface chlorophyll enhancements during and immediately following typhoons in tropical and subtropical waters are more likely associated with surface entrainment of deep chlorophyll maxima. Moreover, the findings demonstrate that remote sensing data alone can overestimate the impact of storms on primary production in all oceans. Full understanding of the impact of storms on upper ocean productivity can only be achieved with ocean observing robots dedicated to high-resolution temporal sampling in the path of storms. PY 2021 SO Biogeosciences SN 1726-4189 PU Copernicus GmbH VL 18 IS 3 BP 849 EP 859 DI 10.5194/bg-2020-310 ID 75667 ER EF