Long-term trend in aerosol optical depth from 1980 to 2001 in north China--颗粒学报PARTICUOLOGY

Xie, J., & Xia, X. (2008). Long-term trend in aerosol optical depth from 1980 to 2001 in north China. Particuology, 6(2), 106–111. https://doi.org/10.1016/j.partic.2007.11.002

Long-term trend in aerosol optical depth from 1980 to 2001 in north China

Jiangxia Xie ^{a b}, Xiangao Xia ^c *

a College of Atmospheric Sciences, Lanzhou University, Lanzhou 730000, China
b Hunan Meteorological Bureau, Changsha 410007, China
c LAGEO, Institute of Atmospheric Physics, Chinese Academy of Sciences, Beijing 100029, China

10.1016/j.partic.2007.11.002

Volume 6, Issue 2, April 2008, Pages 106-111

Received 27 September 2007, Accepted 9 November 2007, Available online 15 April 2008.

E-mail: xxa@mail.iap.ac.cn

Highlights

Abstract

Using the Total Ozone Mapping Spectrometer (TOMS) monthly aerosol optical depth (AOD) at 500 nm data from 1980 to 2001 in north China, the spatial and temporal variations of AOD were examined. Seasonal AODs in Taklimakan Desert were 0.69 and 0.44 in spring and summer, respectively, which were mainly due to frequent occurrences of dust events in this region. Dust activities in spring also led to high aerosol loading in Gobi Desert and in northeast China where spring AODs were 0.33 and 0.29, respectively. Heavily impacted by events such as volcano eruption, forest fires and extraordinary dust storms, AODs showed large inter-annual variations. A decreasing tendency in AOD was observed in north China during 1980–1991, though a reverse tendency was revealed during 1997–2001, especially for spring AOD in northeast China. Further study is required to figure out how much human activities have contributed to the AOD tendency in north China.

Graphical abstract

Keywords

Total Ozone Mapping Spectrometer (TOMS); Aerosol optical depth (AOD); North China

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