This study evaluates the performance of a newly developed atmospheric chemistry-climate model,BCC-AGCM_CUACE2.0(Beijing Climate Center Atmospheric General Circulation ModelChina Meteorological Admin-istration Unified Atmospheric Chemistry Environment)model,for determining past(2010)and future(2050)tropo-spheric ozone(O3)levels.The radiative forcing(RF),effective radiative forcing(ERF),and rapid adjustments(RAs,both atmospheric and cloud)due to changes in tropospheric O3 are then simulated by using the model.The results show that the model reproduces the tropospheric O3 distribution and the seasonal changes in O3 surface concentra-tion in 2010 reasonably compared with site observations throughout China.The global annual mean burden of tropo-spheric O3 is simulated to have increased by 14.1 DU in 2010 relative to pre-industrial time,particularly in the North-ern Hemisphere.Over the same period,tropospheric O3 burden has increased by 21.1 DU in China,with the largest increase occurring over Southeast China.Although the simulated tropospheric O3 burden exhibits a declining trend in global mean in the future,it increases over South Asia and Africa,according to the Representative Concentration Pathway(RCP)4.5 and 8.5 scenarios.The global annual mean ERF of tropospheric O3 is estimated to be 0.25 W m-2 in 1850-2010,and it is 0.50 W m-2 over China.The corresponding atmospheric and cloud RAs caused by the in-crease of tropospheric O3 are estimated to be 0.02 and 0.03 W m-2,respectively.Under the RCP2.6,RCP4.5,RCP6.0,and RCP8.5 scenarios,the annual mean tropospheric O3 ERFs are projected to be 0.29(0.24),0.18(0.32),0.23(0.32),and 0.25(0.01)W m-2 over the globe(China),respectively.

Qi AN;Hua ZHANG;Shuyun ZHAO;Tijian WANG;Qianxia LIU;Zaizhi WANG;Sunling GONG;Bing XIE;Yi LIU

Institute of Urban Meteorology,China Meteorological Administration,Beijing 100089;State Key Laboratory of Severe Weather,Chinese Academy of Meteorological Sciences,China Meteorological Administration,Beijing 100081;Carbon Neutrality Research Center,Institute of Atmospheric Physics,Chinese Academy of Sciences,Beijing 100029;Department of Atmospheric Science,School of Environmental Studies,China University of Geosciences,Wuhan 430074;School of Atmospheric Sciences,Nanjing University,Nanjing 210023;CMA Earth System Modeling and Prediction Center,China Meteorological Administration(CMA),Beijing 100081;Key Laboratory for Climate Studies,National Climate Center,China Meteorological Administration,Beijing 100081

气象学报（英文版）

[1]Qi AN;Hua ZHANG;Shuyun ZHAO;Tijian WANG;Qianxia LIU;Zaizhi WANG;Sunling GONG;Bing XIE;Yi LIU-.Updated Simulation of Tropospheric Ozone and Its Radiative Forcing over the Globe and China Based on a Newly Developed Chemistry-Climate Model)[J].气象学报（英文版）,2022(04):553-573,中插1-中插6

CUACE2,ModelChina,Admin,tropo

Updated,Simulation,Tropospheric,Ozone,Its,Radiative,Forcing,over,Globe,Based,Newly,Developed,Chemistry,Climate,This,study,evaluates,performance,newly,developed,atmospheric,chemistry,climate,model,BCC,AGCM,Beijing,Center,Atmospheric,General,Circulation,Meteorological,istration,Unified,Environment,determining,past,future,ozone,O3,levels,radiative,forcing,effective,rapid,adjustments,RAs,both,cloud,due,changes,tropospheric,then,simulated,by,using,results,show,that,reproduces,distribution,seasonal,surface,concentra,reasonably,compared,site,observations,throughout,global,annual,mean,burden,have,increased,DU,relative,industrial,particularly,North,ern,Hemisphere,Over,same,period,has,largest,occurring,Southeast,Although,exhibits,declining,trend,increases,Asia,Africa,according,Representative,Concentration,Pathway,scenarios,estimated,corresponding,caused,respectively,Under,RCP2,RCP4,RCP6,RCP8,ERFs,projected,globe

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