FN Archimer Export Format PT J TI Global impact of tropical cyclones on primary production BT AF MENKES, Christophe E. LENGAIGNE, Matthieu LEVY, Marina ETHE, Christian BOPP, Laurent AUMONT, Olivier VINCENT, Emmanuel VIALARD, Jerome JULLIEN, Swen AS 1:1,2;2:2,3;3:2;4:2;5:4;6:2;7:5;8:2;9:6; FF 1:;2:;3:;4:;5:;6:;7:;8:;9:PDG-ODE-LOPS-SIAM; C1 Ctr IRD, Noumea, New Caledonia. Univ Paris 06, Univ Paris 04, LOCEAN Lab, IPSL,CNRS,IRD,MNHN, Paris, France. NIO, IISc NIO IITM IRD Joint Int Lab, Indo French Cell Water Sci, Panaji, Goa, India. UVSQ, CEA, CNRS, LSCE,IPSL, Gif Sur Yvette, France. MIT, Program Atmosphere Oceans & Climate, 77 Massachusetts Ave, Cambridge, MA 02139 USA. Univ Brest, IFREMER, CNRS, IRD,LOPS,IUEM, Plouzane, France. C2 IRD, FRANCE UNIV PARIS 06, FRANCE NIO, INDIA UNIV VERSAILLES, FRANCE MIT, USA IFREMER, FRANCE SI BREST SE PDG-ODE-LOPS-SIAM UM LOPS IN WOS Ifremer jusqu'en 2018 copubli-france copubli-p187 copubli-univ-france copubli-int-hors-europe copubli-sud IF 4.655 TC 45 UR https://archimer.ifremer.fr/doc/00333/44449/44121.pdf LA English DT Article AB In this paper, we explore the global responses of surface temperature, chlorophyll and primary production to tropical cyclones (TCs). Those ocean responses are first characterized from the statistical analysis of satellite data under ~1000 TCs over the 1998-2007 period. Besides the cold wake, the vast majority of TCs induce a weak chlorophyll response, with only ~10% of induced blooms exceeding 0.1 mg.m-3. The largest chlorophyll responses mostly occur within coastal regions, in contrast to the strongest cold wakes that generally occur farther offshore. To understand this decoupling, we analyze a coupled dynamical-biogeochemical oceanic simulation forced by realistic wind vortices applied along observed TC tracks. The simulation displays a realistic spatial structure of TC-induced blooms and its observed decoupling with TC cold wakes. In regions of strong TC energy input, the strongest cold wakes occur in regions of shallow thermocline (<60 m) and the strongest blooms in regions of shallow nitracline and/or subsurface chlorophyll maximum (<60 m). Shallow thermoclines are found over many open ocean regions while regions of shallow nitracline and/or subsurface chlorophyll maximum are most prominent in near-coastal areas, explaining the spatial decoupling between the cold and bloom wakes. The overall TC contribution to annual primary production is weak and amounts to ~1%, except in a few limited areas (east Eurasian coast, South tropical Indian Ocean, Northern Australian coast, Eastern Pacific Ocean in the TC prone region) where it can locally reach up to 20-30%. Nearly 80% of this TC-induced annual primary production is the result of the biogeochemical response to the 30% strongest TCs. PY 2016 PD MAY SO Global Biogeochemical Cycles SN 0886-6236 PU Amer Geophysical Union VL 30 IS 5 UT 000379949100010 BP 767 EP 786 DI 10.1002/2015GB005214 ID 44449 ER EF