东亚单层低云特性及其短波辐射强迫的季节变化

Abstract

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: ① 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; ② 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

SI Yu-wen, ZHENG Ning, YANG Hong-hai, CHEN Yong-hang, LIU Qiong, XIA Jun-rong, ZHANG Hua. Seasonal Variation of Single-layer Low Cloud Physical Properties and Radiative Forcing in East Asia[J].Arid Zone Research, 2020, 37(1): 37-45.

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

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