FN Archimer Export Format
PT J
TI Recent variability of the global ocean carbon sink
BT 
AF LANDSCHUETZER, P.
   GRUBER, N.
   BAKKER, D. C. E.
   SCHUSTER, U.
AS 1:1,2;2:1;3:2;4:3;
FF 1:;2:;3:;4:;
C1 ETH, Inst Biogeochem & Pollutant Dynam, Zurich, Switzerland.
   Univ E Anglia, Sch Environm Sci, Ctr Ocean & Atmospher Sci, Norwich NR4 7TJ, Norfolk, England.
   Univ Exeter, Hatherly Labs, Coll Life & Environm Sci, Exeter, Devon, England.
C2 ETH ZURICH, SWITZERLAND
   UNIV E ANGLIA, UK
   UNIV EXETER, UK
IF 3.965
TC 287
UR https://archimer.ifremer.fr/doc/00292/40345/38920.pdf
LA English
DT Article
CR OISO 8
   OISO1
   OISO2
   OISO3-NIVMER98
   OISO4 (VT 46)
   OISO5 (VT 49)
   VT 105 / OISO 17
   VT 108 / OISO-18
   VT 114 / OISO-19
   VT 117 / OISO-20
   VT 120 / OISO-21
   VT 127 / OISO-22
   VT 136 / OISO-23
   VT 51 / OISO 6
   VT 57 / OISO 9
   VT 60 / CARAUS - OISO 10
   VT 62 / CARAUS - OISO 11
   VT 79 / OISO 12
   VT 80 / OISO 13
   VT 81 / OISO 14
   VT 85 / OISO 15
   VT 94 / OISO 16
BO Marion Dufresne
DE ;sea surface pCO(2);neural network;air-sea exchange of CO2;ocean carbon cycle;observations
AB We present a new observation-based estimate of the global oceanic carbon dioxide (CO2) sink and its temporal variation on a monthly basis from 1998 through 2011 and at a spatial resolution of 1 degrees x1 degrees. This sink estimate rests upon a neural network-based mapping of global surface ocean observations of the partial pressure of CO2 (pCO(2)) from the Surface Ocean CO2 Atlas database. The resulting pCO(2) has small biases when evaluated against independent observations in the different ocean basins, but larger randomly distributed differences exist particularly in high latitudes. The seasonal climatology of our neural network-based product agrees overall well with the Takahashi et al. (2009) climatology, although our product produces a stronger seasonal cycle at high latitudes. From our global pCO(2) product, we compute a mean net global ocean (excluding the Arctic Ocean and coastal regions) CO2 uptake flux of -1.42 0.53 Pg C yr(-1), which is in good agreement with ocean inversion-based estimates. Our data indicate a moderate level of interannual variability in the ocean carbon sink (0.12 Pg C yr(-1), 1 sigma) from 1998 through 2011, mostly originating from the equatorial Pacific Ocean, and associated with the El Nino-Southern Oscillation. Accounting for steady state riverine and Arctic Ocean carbon fluxes our estimate further implies a mean anthropogenic CO2 uptake of -1.99 0.59 Pg C yr(-1) over the analysis period. From this estimate plus the most recent estimates for fossil fuel emissions and atmospheric CO2 accumulation, we infer a mean global land sink of -2.82 0.85 Pg C yr(-1) over the 1998 through 2011 period with strong interannual variation.
PY 2014
PD SEP
SO Global Biogeochemical Cycles
SN 0886-6236
PU Amer Geophysical Union
VL 28
IS 9
UT 000343752900002
BP 927
EP 949
DI 10.1002/2014GB004853
ID 40345
ER

EF