| 我国西南地区吸收性气溶胶时空分布 |
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| 引用本文： | 王新莹,李颖芳,桂柯,廖婷婷.我国西南地区吸收性气溶胶时空分布[J].中国环境科学,2021,41(7):3096-3105. |
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| 作者姓名： | 王新莹 李颖芳 桂柯 廖婷婷 |
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| 作者单位： | 1. 成都信息工程大学大气科学学院, 高原大气与环境四川省重点实验室, 四川 成都 610225;2. 中山大学大气科学学院, 广东 珠海 510275;3. 中国气象科学研究院, 大气成分与环境气象研究所, 北京 100081 |
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| 基金项目： | 国家重点研发计划（2018YFC0214003，2016YFA0602004）；国家自然科学基金（9164426）；四川省教育厅项目（15ZA0191） |
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| 摘 要： | 利用2006~2017年的MERRA-2再分析数据、CALIPSO卫星反演数据以及欧洲中心（ECMWF）提供的ERA5再分析资料研究了西南地区吸收性气溶胶的时间变化趋势及空间分布特征.结果表明2006~2017年吸收性气溶胶四川盆地与云南南部整体呈下降趋势，同时存在季节性差异.CALIPSO反演的烟尘气溶胶（主要由强吸收性的碳质气溶胶组成）的三维时空分布及演变趋势表明，云贵高原的黑碳气溶胶消光系数最大，四川盆地次之；从高度分布上来看，黑碳气溶胶在青藏高原的夏季能够被抬升至8~10km（海平面高度以上）左右，而云贵高原黑碳气溶胶主要分布在2~4km左右，四川盆地则集中在1~3km左右.
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| 关 键 词： | 吸收性气溶胶 CALIOP MERRA-2 西南地区 |
| 收稿时间： | 2020-12-18 |
Spatial and temporal distribution of absorbing aerosol in Southwest China |
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| WANG Xin-ying,LI Ying-fang,GUI Ke,LIAO Ting-ting.Spatial and temporal distribution of absorbing aerosol in Southwest China[J].China Environmental Science,2021,41(7):3096-3105. |
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| Authors: | WANG Xin-ying LI Ying-fang GUI Ke LIAO Ting-ting |
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| Institution: | 1. Plateau Atmospheric and Environment Key Laboratory of Sichuan Province, College of Atmosphere Sciences, Chengdu University of Information Technology, Chengdu 610225, China;2. School of Atmospheric Sciences, Sun Yat-Sen University, Guangzhou 510275, China;3. Key Laboratory of Atmospheric Chemistry, Chinese Academy of Meteorological Sciences, Beijing 100081, China |
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| Abstract: | We used MERRA-2reanalysis data, CALIPSO satellite inversion data, and ERA5 reanalysis data to study the spatial and temporal distribution of absorbing aerosols over southwest China from 2006 to 2017. The Sichuan Basin and southern Yunnan had a downward overall trend, albeit with a strong seasonal signal. Second, analysis of the three-dimensional distribution of smoke demonstrated that the extinction coefficient of smoke in Yunnan-Guizhou Plateau and the Sichuan basin are both significant, with the Yunnan-Guizhou Plateau larger of the two. Third, smoke aerosols found to be lofted to about 8~ 10km (above sea level) in the summer over the Qinghai-Tibet Plateau, whereas they were mainly distributed between about 2~4km over the Yunnan-Guizhou Plateau and about 1~3km over the Sichuan Basin. |
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| Keywords: | absorbing aerosol CALIOP MERRA-2 southwest of China |
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