Advances in Atmospheric Sciences

, Volume 27, Issue 5, pp 1064–1077

Modeling study of aerosol indirect effects on global climate with an AGCM

  • Zhili Wang (王志立)
  • Hua Zhang (张 华)
  • Xueshun Shen (沈学顺)
  • Sunling Gong (龚山陵)
  • Xiaoye Zhang (张小曳)
Article

DOI: 10.1007/s00376-010-9120-5

Cite this article as:
Wang, Z., Zhang, H., Shen, X. et al. Adv. Atmos. Sci. (2010) 27: 1064. doi:10.1007/s00376-010-9120-5

Abstract

Aerosol indirect effects (AIEs) on global climate were quantitatively investigated by introducing aerosol-cloud interaction parameterizations for water stratus clouds into an AGCM (BCC_AGCM2.0.1), which was developed by the National Climate Center of the China Meteorological Administration. The study yielded a global annual mean of −1.14 W m−2 for the first indirect radiative forcing (IRF), with an obvious seasonal change. In summer, large forcing mainly occurred in mid to high latitudes of the Northern Hemisphere, whereas in winter, large values were found at 60°S. The second indirect effect led to global annual mean changes in net shortwave flux of −1.03 W m−2 at the top of the atmosphere (TOA), which was relatively significant in mid-latitude regions of both hemispheres. The total AIE reduced the global annual means of net shortwave flux at the TOA and of surface temperature by 1.93 W m−2 and 0.12 K, respectively. Change in surface temperature induced by the total AIE was clearly larger in the Northern Hemisphere (−0.23 K) than in the Southern Hemisphere, where changes were negligible. The interhemispheric asymmetry in surface cooling resulted in significant differences in changes of the interhemispheric annual mean precipitation rate, which could lead to a tendency for the ITCZ to broaden. The total AIE decreased the global annual mean precipitation rate by 0.055 mm d−1.

Key words

aerosol cloud radiation indirect effect 

Copyright information

© Chinese National Committee for International Association of Meteorology and Atmospheric Sciences, Institute of Atmospheric Physics, Science Press and Springer-Verlag Berlin Heidelberg 2010

Authors and Affiliations

  • Zhili Wang (王志立)
    • 1
    • 2
  • Hua Zhang (张 华)
    • 2
  • Xueshun Shen (沈学顺)
    • 3
  • Sunling Gong (龚山陵)
    • 4
    • 5
  • Xiaoye Zhang (张小曳)
    • 4
  1. 1.Chinese Academy of Meteorological SciencesBeijingChina
  2. 2.National Climate CenterChina Meteorological AdministrationBeijingChina
  3. 3.Center for Numerical Prediction Research and State Key Laboratory of Severe WeatherChinese Academy of Meteorological SciencesBeijingChina
  4. 4.Center for Atmosphere Watch and Services, China Meteorological AdministrationChinese Academy of Meteorological SciencesBeijingChina
  5. 5.Air Quality Research BranchMeteorological Service of CanadaTorontoCanada

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