Meteorological conditions and structures of atmospheric boundary layer in October 2004 over Pearl River Delta area

被引：94

作者：

Fan, Shaojia ^{[1
]}

Wang, Baomin ^{[1
]}

Tesche, M. ^{[2
]}

Engelmann, R. ^{[2
]}

Althausen, A. ^{[2
]}

Liu, Ji ^{[1
]}

Zhu, Wei ^{[1
]}

Fan, Qi ^{[1
]}

Li, Minghua ^{[1
]}

Ta, Na ^{[1
]}

Song, Lili ^{[3
]}

Leong, Kacheng ^{[4
]}

机构：

[1] Sun Yat Sen Univ, Dept Atmospher Sci, Guangzhou 510275, Guangdong, Peoples R China

[2] Leibniz Inst Tropospher Res, D-04318 Leipzig, Germany

[3] Climate Ctr Guangdong Prov, Guangzhou 510080, Guangdong, Peoples R China

[4] Macao Meteorol & Geophys Bur, Macao, Peoples R China

来源：

ATMOSPHERIC ENVIRONMENT | 2008年 / 42卷 / 25期

关键词：

atmospheric boundary layer; radio soundings; Raman LIDAR; PRD;

D O I：

10.1016/j.atmosenv.2008.01.067

中图分类号：

X [环境科学、安全科学];

学科分类号：

08 ; 0830 ;

摘要：

High-level concentrations of air pollutants usually occur in autumn and winter over Peal River Delta (PRD), China. Atmospheric boundary layer observations were carried out at Qingyuan, Panyu and Xinken in PRD in October 2004. Wind speed, wind direction, air temperature and aerosol characteristics were measured by radio soundings and Raman LIDAR. The observational results showed that surface high-pressure system (anti-cyclone), descent motion outside of hurricane and sea breeze would result in the high-level concentrations. The averaged height of atmospheric boundary layer in nighttime was about 200 m, while in day time the maximal value was about 1200 m. The aerosol layer typically reached up to 1.5-3.0 km. The averaged aerosol optical depth was 0.91 at 532 nm wavelength and aerosol mainly originated from fossil fuel and biomass-burning emissions. The presence of anti-cyclone high-pressure systems and sea breeze lead to the formation of three inversion layers and two aerosol layers as well as quite specific vertical profiles of the wind velocity over Xinken station. (c) 2008 Elsevier Ltd. All rights reserved.

引用

页码：6174 / 6186

页数：13

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