The Effect of Super Volcanic Eruptions on Ozone Depletion in a Chemistry–Climate Model

查看全文 作　　者：Luyang [1,2]XU;Ke [1]WEI;Xue [3]WU;S. P. [4]SMYSHLYAEV;Wen [1]CHEN;V. Ya. [5]GALIN

机构地区：[1]Center for Monsoon System Research,Institute of Atmospheric Physics,Chinese Academy of Sciences,Beijing 100190,China;[2]University of Chinese Academy of Sciences,Beijing 100049,China;[3]Key Laboratory of Middle Atmosphere and Global Environment Observation,Institute of Atmospheric Physics,Chinese Academy of Sciences,Beijing 100190,China;[4]Russian State Hydrometeorological University,Malookhtinskii pr.98,St.Petersburg 195196,Russia;[5]Institute of Numerical Mathematics,Russian Academy of Sciences,ul.Gubkina 8,Moscow 11999,Russia

出　　处：《Advances in Atmospheric Sciences》索引2019年第36卷第8期,共14页

基　　金：supported by the National Key Research and Development Project of China (Grant No. 2016YFA0600604);the National Natural Science Foundation of China (Grant No. 41461144001 and No. 41861144016);the Youth Innovation Promotion Association of the Chinese Academy of Sciences (Grant No. 2014064) 摘　　要：With the gradual yet unequivocal phasing out of ozone depleting substances(ODSs), the environmental crisis caused by the discovery of an ozone hole over the Antarctic has lessened in severity and a promising recovery of the ozone layer is predicted in this century. However, strong volcanic activity can also cause ozone depletion that might be severe enough to threaten the existence of life on Earth. In this study, a transport model and a coupled chemistry–climate model were used to simulate the impacts of super volcanoes on ozone depletion. The volcanic eruptions in the experiments were the 1991 Mount Pinatubo eruption and a 100 × Pinatubo size eruption. The results show that the percentage of global mean total column ozone depletion in the 2050 RCP8.5 100 × Pinatubo scenario is approximately 6% compared to two years before the eruption and 6.4% in tropics. An identical simulation, 100 × Pinatubo eruption only with natural source ODSs, produces an ozone depletion of 2.5% compared to two years before the eruption, and with 4.4% loss in the tropics. Based on the model results,the reduced ODSs and stratospheric cooling lighten the ozone depletion after super volcanic eruption. 关键词：STRATOSPHERIC ozone VOLCANIC ERUPTIONS STRATOSPHERIC AEROSOLS chemistry–climate model

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The Effect of Super Volcanic Eruptions on Ozone Depletion in a Chemistry–Climate Model

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