FN Archimer Export Format
PT J
TI Mesoscale modulation of air-sea CO2 flux in Drake Passage
BT 
AF SONG, Hajoon
   MARSHALL, John
   MUNRO, David R.
   DUTKIEWICZ, Stephanie
   SWEENEY, Colm
   MCGILLICUDDY, D. J., Jr.
   HAUSMANN, Ute
AS 1:1;2:1;3:2,3;4:1;5:4,5;6:6;7:6;
FF 1:;2:;3:;4:;5:;6:;7:;
C1 MIT, Dept Earth Atmospher & Planetary Sci, Cambridge, MA 02139 USA.
   Univ Colorado, Dept Atmospher & Ocean Sci, Boulder, CO 80309 USA.
   Univ Colorado, Inst Arctic & Alpine Res, Boulder, CO 80309 USA.
   Univ Colorado, Cooperat Inst Res Environm Sci, Boulder, CO 80309 USA.
   NOAA, Earth Syst Res Lab, Boulder, CO USA.
   Woods Hole Oceanog Inst, Dept Appl Ocean Phys & Engn, Woods Hole, MA 02543 USA.
C2 MIT, USA
   UNIV COLORADO, USA
   UNIV COLORADO, USA
   UNIV COLORADO, USA
   NOAA, USA
   WHOI, USA
IF 2.939
TC 22
UR https://archimer.ifremer.fr/doc/00383/49407/49894.pdf
LA English
DT Article
CR OISO - OCÉAN INDIEN SERVICE D'OBSERVATION
DE ;CO2 flux;mesoscale eddy;Southern Ocean;vertical mixing;nutrient fluxes
AB We investigate the role of mesoscale eddies in modulating air-sea CO2 flux and associated biogeochemical fields in Drake Passage using in situ observations and an eddy-resolving numerical model. Both observations and model show a negative correlation between temperature and partial pressure of CO2 (pCO(2)) anomalies at the sea surface in austral summer, indicating that warm/cold anticyclonic/cyclonic eddies take up more/less CO2. In austral winter, in contrast, relationships are reversed: warm/cold anticyclonic/cyclonic eddies are characterized by a positive/negative pCO(2) anomaly and more/less CO2 outgassing. It is argued that DIC-driven effects on pCO(2) are greater than temperature effects in austral summer, leading to a negative correlation. In austral winter, however, the reverse is true. An eddy-centric analysis of the model solution reveals that nitrate and iron respond differently to the same vertical mixing: vertical mixing has a greater impact on iron because its normalized vertical gradient at the base of the surface mixed layer is an order of magnitude greater than that of nitrate.
PY 2016
PD SEP
SO Journal Of Geophysical Research-oceans
SN 2169-9275
PU Amer Geophysical Union
VL 121
IS 9
UT 000386913200005
BP 6635
EP 6649
DI 10.1002/2016JC011714
ID 49407
ER

EF