FN Archimer Export Format
PT J
TI The influence of geostrophic strain on oceanic ageostrophic motion and surface chlorophyll
BT 
AF Zhang, Zhengguang
   Qiu, Bo
   Klein, Patrice
   Travis, Seth
AS 1:1;2:1;3:2,3;4:4;
FF 1:;2:;3:;4:;
C1 Physical Oceanography Lab, Qingdao Collaborative Innovation Center of Marine Science and Technology, Ocean University of China, Qingdao, China
   Laboratory for Ocean and Climate Dynamics, Qingdao National Laboratory for Marine Science and Technology, Qingdao, China
   Department of Oceanography, University of Hawaii at Manoa, Honolulu, HI, USA
   Laboratoire d’Océanographie Physique et Spatiale, Brest, 29200, France
C2 UNIV OCEAN CHINA, CHINA
   QNLM, CHINA
   UNIV HAWAII MANOA, USA
   CNRS, FRANCE
UM LOPS
IN WOS Cotutelle UMR
   DOAJ
   copubli-int-hors-europe
   copubli-sud
IF 12.121
TC 54
UR https://archimer.ifremer.fr/doc/00509/62057/66227.pdf
   https://archimer.ifremer.fr/doc/00509/62057/66228.xlsx
   https://archimer.ifremer.fr/doc/00509/62057/66230.pdf
   https://archimer.ifremer.fr/doc/00509/62057/66231.pdf
LA English
DT Article
AB Oceanic submesoscale ageostrophic processes have been progressively recognized as an important upwelling mechanism to close the nutrient budget and sustain the observed primary production of phytoplankton in the euphotic layer. Their relatively small spatio-temporal scales (of 1~10 km and a few days) have hindered a systematic observational quantification of the submesoscale ageostrophic flow variability and its impact on ocean biogeochemistry. By combining surface drifters, satellite altimetry and satellite ocean-color data, we detect that when the strain rate of mesoscale surface geostrophic flow is strong, it favors a higher ageostrophic kinetic energy level and an increase in surface chlorophyll concentration. The strain-induced frontal processes are characterized by a surface chlorophyll increase and secondary ageostrophic upwelling along the light side of the oceanic density front. Further analysis indicates that the balanced ageostrophic motions with longer time scales are more effective in inducing chlorophyll increase than the unbalanced shorter time-scale wave motions. 
PY 2019
PD JUL
SO Nature Communications
SN 2041-1723
PU Springer Science and Business Media LLC
VL 10
IS 1
UT 000473132200002
DI 10.1038/s41467-019-10883-w
ID 62057
ER

EF