Global air-sea CO_(2) exchange fl ux since 1980s: results from CMIP6 Earth System Models  

作　　者：Baoxiao QU Jinming SONG Xuegang LI Huamao YUAN Kun ZHANG Suqing XU 

机构地区：[1]Key Laboratory of Marine Ecology and Environmental Sciences,Institute of Oceanology,Chinese Academy of Sciences,Qingdao 266071,China [2]Marine Ecology and Environmental Sciences Laboratory,Pilot National Laboratory for Marine Science and Technology(Qingdao),Qingdao 266237,China [3]University of Chinese Academy of Sciences,Beijing 100049,China [4]Center for Ocean Mega-Science,Chinese Academy of Sciences,Qingdao 266071,China [5]Key Laboratory of Ocean Circulation and Waves,Institute of Oceanology,Chinese Academy of Sciences,Qingdao 266071,China [6]Key Laboratory of Global Change and Marine-Atmospheric Chemistry,Third Institute of Oceanography,Ministry of Natural Resources,Xiamen 361005,China

出　　处：《Journal of Oceanology and Limnology》2022年第4期1417-1436,共20页海洋湖沼学报（英文）

基　　金：Supported by the National Natural Science Foundation of China(No.41806133);the Marine S&T Fund of Shandong Province for the Pilot National Laboratory for Marine Science and Technology(Qingdao)(No.2022QNLM040003-1);the National Key Research and Development Program of China(No.2017YFA0603204);the Fund of Key Laboratory of Global Change and Marine-Atmospheric Chemistry,MNR(No.GCMAC1905)。

摘　　要：The ocean could profoundly modulate the ever-increasing atmospheric CO_(2) by air-sea CO_(2) exchange process,which is also able to cause signifi cant changes of physical and biogeochemical properties in return.In this study,we assessed the long-term average and spatial-temporal variability of global air-sea CO_(2) exchange fl ux(F CO_(2))since 1980s basing on the results of 18 Coupled Model Intercomparison Project Phase 6(CMIP6)Earth System Models(ESMs).Our fi ndings indicate that the CMIP6 ESMs simulated global CO_(2) sink in recent three decades ranges from 1.80 to 2.24 Pg C/a,which is coincidence with the results of cotemporaneous observations.What’s more,the CMIP6 ESMs consistently show that the global oceanic CO_(2) sink has gradually intensifi ed since 1980s as well as the observations.This study confi rms the simulated F CO_(2) could reach agreements with the observations in the aspect of primary climatological characteristics,however,the simulation skills of CIMP6 ESMs in diverse open-sea biomes are unevenness.None of the 18 CMIP6 ESMs could reproduce the observed F CO_(2) increasement in the central-eastern tropical Pacifi c and the midlatitude Southern Ocean.Defi ciencies of some CMIP6 ESMs in reproducing the atmospheric pressure systems of the Southern Hemisphere and the El Niño-Southern Oscillation(ENSO)mode of the tropical Pacifi c are probably the major causes.

关 键 词：air-sea CO_(2)fl ux Coupled Model Intercomparison Project Phase 6(CMIP6) Earth System Model(ESM) long-term average spatial-temporal variability 

分 类 号：P732.6[天文地球—海洋科学] P467