Simulation of the direct effects of dust aerosol on climate in East Asia--颗粒学报PARTICUOLOGY

Wu, J., Fu, C., Han, Z., Tang, J., Xu, Y., & Zhang, R. (2010). Simulation of the direct effects of dust aerosol on climate in East Asia. Particuology, 8(4), 301-307. https://doi.org/10.1016/j.partic.2010.01.006

Simulation of the direct effects of dust aerosol on climate in East Asia

Jian Wu ^{a b *}, Congbin Fu ^b, Zhiwei Han ^b, Jianping Tang ^c, Yanyan Xu ^d, Renjian Zhang ^b

a Department of Atmospheric Science, Yunnan University, Kunming 650091, China
b Key Laboratory of Regional Climate-Environment Research for Temperate East Asia, Institute of Atmospheric Physics, Chinese Academy of Sciences, Beijing 100029, China
c Department of Atmospheric Science, Nanjing University, Nanjing 210093, China
d Yunnan Meteorological Bureau, Kunming 650031, China

10.1016/j.partic.2010.01.006

Volume 8, Issue 4, August 2010, Pages 301-307

Received 19 January 2009, Revised 21 July 2009, Accepted 20 January 2010, Available online 23 July 2010.

E-mail: wujian@ynu.edu.cn

Highlights

Abstract

The results from some general circulation models show distinct radiative forcing (RF) by dust aerosol, which potentially has an effect on climate change. The direct RF and regional climatic effects of dust aerosol over the East Asian region are investigated in this study using NCAR's Community Atmospheric Model version 3.1. The negative RF at the top of the atmosphere (TOA) and the surface (SRF) has been revealed except for some high-albedo regions, which leads to a decrease in the surface air temperature and brings an increase of atmospheric radiative heating under both clear- and all-sky conditions. The decrease in the surface air temperature can be found over a wide region that includes the Indian peninsula and northwest China. It accompanies an increase in eastern China and the Korean peninsula, and temperature changes are not limited to regions with a large dust optical depth. A belt of vapor increase is revealed from the Indian peninsula extending east to northern China, while vapor content evidently deceases in southwest China. An increase in precipitation can also be found in the belt of increased vapor accompanying the reduction of precipitation across the regions to the south of 30°N. The pattern of rainfall change helps to offset the trend of increasing wetness in the south and increasing dryness in the north of China in recent years.

Graphical abstract

Keywords

Dust; Radiative forcing; Temperature; Precipitation; East Asia

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