FN Archimer Export Format
PT J
TI Update on the Temperature Corrections of Global Air-Sea CO2 Flux Estimates
BT 
AF DONG, Yuanxu
   BAKKER, Dorothee C. E.
   BELL, Thomas G.
   HUANG, Boyin
   LANDSCHUTZER, Peter
   LISS, Peter S.
   YANG, Mingxi
AS 1:1,2;2:1;3:2;4:3;5:4;6:1;7:2;
FF 1:;2:;3:;4:;5:;6:;7:;
C1 Centre for Ocean and Atmospheric Sciences, School of Environmental Sciences, University of East Anglia, Norwich, UK
   Plymouth Marine Laboratory, Prospect Place, Plymouth, UK
   National Centers for Environmental Information, National Oceanic and Atmospheric Administration, Ashddeeville, NC, USA
   Max Planck Institute for Meteorology, Hamburg, Germany
C2 UNIV E ANGLIA, UK
   PML, UK
   NOAA, USA
   MAX PLANCK INT METEROL, GERMANY
IF 5.2
TC 8
UR https://archimer.ifremer.fr/doc/00795/90657/96244.pdf
   https://archimer.ifremer.fr/doc/00795/90657/96245.pdf
   https://archimer.ifremer.fr/doc/00795/90657/96246.xlsx
LA English
DT Article
CR OISO - OCÉAN INDIEN SERVICE D'OBSERVATION
DE ;air-sea CO2 flux;temperature effects;updated correction
AB The oceans are a major carbon sink. Sea surface temperature (SST) is a crucial variable in the calculation of the air-sea carbon dioxide (CO2) flux from surface observations. Any bias in the SST or any upper ocean vertical temperature gradient (e.g., the cool skin effect) potentially generates a bias in the CO2 flux estimates. A recent study suggested a substantial increase (similar to 50% or similar to 0.9 Pg C yr(-1)) in the global ocean CO2 uptake due to this temperature effect. Here, we use a gold standard buoy SST data set as the reference to assess the accuracy of insitu SST used for flux calculation. A physical model is then used to estimate the cool skin effect, which varies with latitude. The bias-corrected SST (assessed by buoy SST) coupled with the physics-based cool skin correction increases the average ocean CO2 uptake by similar to 35% (0.6 Pg C yr(-1)) from 1982 to 2020, which is substantially smaller than the previous correction. After these temperature considerations, we estimate an average net ocean CO2 uptake of 2.2 +/- 0.4 Pg C yr(-1) from 1994 to 2007 based on an ensemble of surface observation-based flux estimates, in line with the independent interior ocean carbon storage estimate corrected for the river induced natural outgassing flux (2.1 +/- 0.4 Pg C yr(-1)). 
PY 2022
PD SEP
SO Global Biogeochemical Cycles
SN 0886-6236
PU Amer Geophysical Union
VL 36
IS 9
UT 000849850500001
DI 10.1029/2022GB007360
ID 90657
ER

EF