Arid Zone Research ›› 2020, Vol. 37 ›› Issue (1): 37-45.

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Seasonal Variation of Single-layer Low Cloud Physical Properties and Radiative Forcing in East Asia

SI Yu-wen1, ZHENG Ning1,YANG Hong-hai1, CHEN Yong-hang1, LIU Qiong1, XIA Jun-rong2, ZHANG Hua3   

  1. 1. College of Environmental Science and Engineering, Donghua University,Shanghai 201620,China;
    2. Key Laboratory for Aerosol-Cloud-Precipitation of China Meteorological Administration,NUIST,Nanjing 210044,Jiangsu,China;
    3. State Key Laboratory of Severe Weather, Chinese Academy of Meteorological Sciences, Beijing 100081, China

  • Received:2019-07-09 Revised:2019-09-05 Online:2020-01-15 Published:2020-01-15
  • About author:司钰文(1995-),女,硕士研究生,主要从事遥感卫星太阳辐射研究.E-mail:18321158192@163.com

Abstract: The data from Clouds and the Earth's Radiant Energy System were used to study the distribution of low-cloud physical properties and downward shortwave radiative forcing in different regions of East Asia from 2003 to 2016. The results are as follows:    The variation of single-layer low cloud radiation forcing was similar with the single-layer low cloud fraction in spring and autumn, and there was a good consistency with the ice/liquid water path in spring, summer and autumn;   Temporally, the weakening effect of single-layer low cloud on shortwave radiation was the strongest in the north and west in summer. The strongest weakening effect in the south and northwest occurred in spring; that in the eastern ocean occurred in winter. In terms of spatial distribution, except for summer, the strongest single-layer low cloud weakening effect in other seasons occurred in the south. In summer, the single-layer low cloud in the East Asia had a weaker effects on shortwave radiation, and the absolute value of the radiation forcing was less than 200 W·m-2

Key words:  single-layer cloud, low cloud, cloud physical property, shortwave radiative forcing, East Asia