Radiative forcing and global warming potential of perfluorocarbons and sulfur hexafluoride  

作　　者：ZHANG Hua WU JinXiu SHEN ZhongPing 

机构地区：[1]Laboratory for Climate Studies, National Climate Center, China Meteorological Administration, Beijing 100081, China [2]Shanghai Meteorological Media Center, Shanghai 200030, China [3]Shanghai Climate Center, Shanghai 200030, China

出　　处：《Science China Earth Sciences》2011年第5期764-772,共9页中国科学（地球科学英文版）

基　　金：supported by National Natural Science Foundation of China (Grant No. 40775006);National Basic Research Program of Chnia (Grant No. 2010CB955703);the Special Foundation for Climate Change (Grant No. 2010-2200509)

摘　　要：We developed two radiation parameterizations with different resolutions （17-band and 998-band） for perfluorocarbons （PFCs） and sulfur hexafluoride （SF6） using the updated High-resolution Transmission Molecular Absorption （HITRAN） 2004 database and the correlated k-distribution method. We analyzed the impacts of the two radiation schemes on heating rates. Then we studied their instantaneous radiative efficiency, stratospheric adjusted radiative efficiency, global warming potential （GWP）, and global temperature potential （GTP）, for both clear- and all-sky conditions using a high-resolution radiation scheme. We found that the stratosphere-adjusted radiative efficiencies of C2F6, CF4, and SF6 for the whole sky were 0.346, 0.098, and 0.680 W m^-2 ppbv^-1, respectively. Radiative forcing from the industrial revolution to 2005 was 0.001, 0.007, and 0.004 W m^-2, respectively; and was predicted to rise to 0.008, 0.036, and 0.037 W m^-2, respectively, by 2100, according to emission scenarios provided by the IPCC. The GWPs of C2F6, CF4, and SF6 are 17035, 7597, and 31298, respectively, for a time horizon of 100 years relative to CO2. Their GTPs of pulse and sustained emissions, GTPv and GTPs, are 22468, 10052, and 40935 and 16498, 7355, and 30341, respectively, for a 100-year time horizon.We developed two radiation parameterizations with different resolutions(17-band and 998-band) for perfluorocarbons(PFCs) and sulfur hexafluoride(SF6) using the updated High-resolution Transmission Molecular Absorption(HITRAN) 2004 database and the correlated k-distribution method.We analyzed the impacts of the two radiation schemes on heating rates.Then we studied their instantaneous radiative efficiency,stratospheric adjusted radiative efficiency,global warming potential(GWP),and global temperature potential(GTP),for both clear-and all-sky conditions using a high-resolution radiation scheme.We found that the stratosphere-adjusted radiative efficiencies of C2F6,CF4,and SF6 for the whole sky were 0.346,0.098,and 0.680 W m-2 ppbv-1,respectively.Radiative forcing from the industrial revolution to 2005 was 0.001,0.007,and 0.004 W m-2,re-spectively;and was predicted to rise to 0.008,0.036,and 0.037 W m-2,respectively,by 2100,according to emission scenarios provided by the IPCC.The GWPs of C2F6,CF4,and SF6 are 17035,7597,and 31298,respectively,for a time horizon of 100 years relative to CO2.Their GTPs of pulse and sustained emissions,GTPP and GTPS,are 22468,10052,and 40935 and 16498,7355,and 30341,respectively,for a 100-year time horizon.

关 键 词：PFCS SF6 radiative forcing global warming potential （GWP） global temperature potential （GTP） correlatedk-distribution 

分 类 号：P456.7[天文地球—大气科学及气象学] X513[环境科学与工程—环境工程]