East Asian Study of Tropospheric Aerosols and their Impact on Regional Clouds, Precipitation, and Climate (EAST-AIRCPC)

Zhanqing Li, Yuan Wang, Jianping Guo, Chuanfeng Zhao, Maureen C. Cribb, Xiquan Dong, Jiwen Fan, Daoyi Gong, Jianping Huang, Mengjiao Jiang, Yiquan Jiang, S. S. Lee, Huan Li, Jiming Li, Jianjun Liu, Yun Qian, Daniel Rosenfeld, Siyu Shan, Yele Sun, Huijun WangJinyuan Xin, Xin Yan, Xin Yang, Xiu qun Yang, Fang Zhang, Youtong Zheng

Research output: Contribution to journalReview article

28 Scopus citations

Abstract

Aerosols have significant and complex impacts on regional climate in East Asia. Cloud-aerosol-precipitation interactions (CAPI) remain most challenging in climate studies. The quantitative understanding of CAPI requires good knowledge of aerosols, ranging from their formation, composition, transport, and their radiative, hygroscopic, and microphysical properties. A comprehensive review is presented here centered on the CAPI based chiefly, but not limited to, publications in the special section named EAST-AIRcpc concerning (1) observations of aerosol loading and properties, (2) relationships between aerosols and meteorological variables affecting CAPI, (3) mechanisms behind CAPI, and (4) quantification of CAPI and their impact on climate. Heavy aerosol loading in East Asia has significant radiative effects by reducing surface radiation, increasing the air temperature, and lowering the boundary layer height. A key factor is aerosol absorption, which is particularly strong in central China. This absorption can have a wide range of impacts such as creating an imbalance of aerosol radiative forcing at the top and bottom of the atmosphere, leading to inconsistent retrievals of cloud variables from space-borne and ground-based instruments. Aerosol radiative forcing can delay or suppress the initiation and development of convective clouds whose microphysics can be further altered by the microphysical effect of aerosols. For the same cloud thickness, the likelihood of precipitation is influenced by aerosols: suppressing light rain and enhancing heavy rain, delaying but intensifying thunderstorms, and reducing the onset of isolated showers in most parts of China. Rainfall has become more inhomogeneous and more extreme in the heavily polluted urban regions.

Original languageEnglish (US)
Pages (from-to)13026-13054
Number of pages29
JournalJournal of Geophysical Research: Atmospheres
Volume124
Issue number23
DOIs
StatePublished - Dec 16 2019

ASJC Scopus subject areas

  • Geophysics
  • Forestry
  • Oceanography
  • Aquatic Science
  • Ecology
  • Water Science and Technology
  • Soil Science
  • Geochemistry and Petrology
  • Earth-Surface Processes
  • Atmospheric Science
  • Earth and Planetary Sciences (miscellaneous)
  • Space and Planetary Science
  • Palaeontology

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    Li, Z., Wang, Y., Guo, J., Zhao, C., Cribb, M. C., Dong, X., Fan, J., Gong, D., Huang, J., Jiang, M., Jiang, Y., Lee, S. S., Li, H., Li, J., Liu, J., Qian, Y., Rosenfeld, D., Shan, S., Sun, Y., ... Zheng, Y. (2019). East Asian Study of Tropospheric Aerosols and their Impact on Regional Clouds, Precipitation, and Climate (EAST-AIRCPC). Journal of Geophysical Research: Atmospheres, 124(23), 13026-13054. https://doi.org/10.1029/2019JD030758