A modeling study of effective radiative forcing and climate response due to tropospheric ozone |
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| Authors: | Bing Xie Hua Zhang Zhili Wang Shuyun Zhao Qiang Fu |
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| Institution: | 1.Key Laboratory for Semi-Arid Climate Change of the Ministry of Education, College of Atmosphere Science,Lanzhou University,Lanzhou,China;2.Laboratory for Climate Studies of China Meteorological Administration, National Climate Center,China Meteorological Administration,Beijing,China;3.Chinese Academy of Meteorological Sciences,Beijing,China;4.Department of Atmospheric Sciences,University of Washington,Seattle,USA |
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| Abstract: | This study simulates the effective radiative forcing (ERF) of tropospheric ozone from 1850 to 2013 and its effects on global climate using an aerosol-climate coupled model, BCC_AGCM2.0.1_CUACE/Aero, in combination with OMI (Ozone Monitoring Instrument) satellite ozone data. According to the OMI observations, the global annual mean tropospheric column ozone (TCO) was 33.9 DU in 2013, and the largest TCO was distributed in the belts between 30°N and 45°N and at approximately 30°S; the annual mean TCO was higher in the Northern Hemisphere than that in the Southern Hemisphere; and in boreal summer and autumn, the global mean TCO was higher than in winter and spring. The simulated ERF due to the change in tropospheric ozone concentration from 1850 to 2013 was 0.46 W m-2, thereby causing an increase in the global annual mean surface temperature by 0.36°C, and precipitation by 0.02 mm d-1 (the increase of surface temperature had a significance level above 95%). The surface temperature was increased more obviously over the high latitudes in both hemispheres, with the maximum exceeding 1.4°C in Siberia. There were opposite changes in precipitation near the equator, with an increase of 0.5 mm d-1 near the Hawaiian Islands and a decrease of about -0.6 mm d-1 near the middle of the Indian Ocean. |
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| Keywords: | tropospheric ozone effective radiative forcing climate effect BCC_AGCM2 0 1_CUACE/Aero |
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