FN Archimer Export Format
PT J
TI Long-term surface pCO(2) trends from observations and models
BT 
AF TJIPUTRA, Jerry F.
   OLSEN, Are
   BOPP, Laurent
   LENTON, Andrew
   PFEIL, Benjamin
   ROY, Tilla
   SEGSCHNEIDER, Joachim
   TOTTERDELL, Ian
   HEINZE, Christoph
AS 1:1;2:1,2,3;3:4;4:5;5:2,3;6:4;7:6;8:7;9:1,2,3;
FF 1:;2:;3:;4:;5:;6:;7:;8:;9:;
C1 Uni Res Climate, Bjerknes Ctr Climate Res, Bergen, Norway.
   Univ Bergen, Inst Geophys, Bergen, Norway.
   Bjerknes Ctr Climate Res, Bergen, Norway.
   CNRS CEA UVSQ, IPSL LSCE, UMR8212, Gif Sur Yvette, France.
   Ctr Australian Weather & Climate Res, CSIRO, Hobart, Tas, Australia.
   Max Planck Inst Meteorol, D-20146 Hamburg, Germany.
   Hadley Ctr, Met Off, Exeter, Devon, England.
C2 BCCR, NORWAY
   UNIV BERGEN, NORWAY
   BCCR, NORWAY
   CNRS, FRANCE
   CAWCR, AUSTRALIA
   MAX PLANCK INST, GERMANY
   MET OFF, UK
IN DOAJ
IF 2.147
TC 46
UR https://archimer.ifremer.fr/doc/00291/40228/38691.pdf
   https://archimer.ifremer.fr/doc/00291/40228/38692.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 ;surface pCO(2);ocean CO2 sinks;Earth system models;CMIP5 projections;ocean biogeochemistry
AB We estimate regional long-term surface ocean pCO(2) growth rates using all available underway and bottled biogeochemistry data collected over the past four decades. These observed regional trends are compared with those simulated by five state-of-the-art Earth system models over the historical period. Oceanic pCO(2) growth rates faster than the atmospheric growth rates indicate decreasing atmospheric CO2 uptake, while ocean pCO(2) growth rates slower than the atmospheric growth rates indicate increasing atmospheric CO2 uptake. Aside from the western subpolar North Pacific and the subtropical North Atlantic, our analysis indicates that the current observation-based basin-scale trends may be underestimated, indicating that more observations are needed to determine the trends in these regions. Encouragingly, good agreement between the simulated and observed pCO(2) trends is found when the simulated fields are subsampled with the observational coverage. In agreement with observations, we see that the simulated pCO(2) trends are primarily associated with the increase in surface dissolved inorganic carbon (DIC) associated with atmospheric carbon uptake, and in part by warming of the sea surface. Under the RCP8.5 future scenario, DIC continues to be the dominant driver of pCO(2) trends, with little change in the relative contribution of SST. However, the changes in the hydrological cycle play an increasingly important role. For the contemporary (1970-2011) period, the simulated regional pCO(2) trends are lower than the atmospheric growth rate over 90% of the ocean. However, by year 2100 more than 40% of the surface ocean area has a higher oceanic pCO(2) trend than the atmosphere, implying a reduction in the atmospheric CO2 uptake rate. The fastest pCO(2) growth rates are projected for the subpolar North Atlantic, while the high-latitude Southern Ocean and eastern equatorial Pacific have the weakest growth rates, remaining below the atmospheric pCO(2) growth rate. Our work also highlights the importance and need for a sustained long-term observing strategy to continue monitoring the change in the ocean anthropogenic CO2 sink and to better understand the potential carbon cycle feedbacks to climate that could arise from it.
PY 2014
PD MAY
SO Tellus Series B-chemical And Physical Meteorology
SN 0280-6509
PU Co-action Publishing
VL 66
IS 23083
UT 000336449100001
BP 1
EP 24
DI 10.3402/tellusb.v66.23083
ID 40228
ER

EF