Atmospheric brown clouds reach the Tibetan Plateau by crossing the Himalayas (SCI)
文献类型：期刊论文
| 作者 | Luthi Z. L.; Skerlak B.; Kim S. W.; Lauer A.; Mues A.; Rupakheti M.; Kang S. |
| 刊名 | Atmospheric Chemistry and Physics
 |
| 出版日期 | 2015 |
| 卷号 | 15期号:11页码:6007-6021 |
| 英文摘要 | The Himalayas and the Tibetan Plateau region (HTP), despite being a remote and sparsely populated area, is regularly exposed to polluted air masses with significant amounts of aerosols including black carbon. These dark, light-absorbing particles are known to exert a great melting potential on mountain cryospheric reservoirs through albedo reduction and radiative forcing. This study combines ground-based and satellite remote sensing data to identify a severe aerosol pollution episode observed simultaneously in central Tibet and on the southern side of the Himalayas during 1319 March 2009 (pre-monsoon). Trajectory calculations based on the high-resolution numerical weather prediction model COSMO are used to locate the source regions and study the mechanisms of pollution transport in the complex topography of the HTP. We detail how polluted air masses from an atmospheric brown cloud (ABC) over South Asia reach the Tibetan Plateau within a few days. Lifting and advection of polluted air masses over the great mountain range is enabled by a combination of synoptic-scale and local meteorological processes. During the days prior to the event, winds over the Indo-Gangetic Plain (IGP) are generally weak at lower levels, allowing for accumulation of pollutants and thus the formation of ABCs. The subsequent passing of synopticscale troughs leads to southwesterly flow in the middle troposphere over northern and central India, carrying the polluted air masses across the Himalayas. As the IGP is known to be a hotspot of ABCs, the cross-Himalayan transport of polluted air masses may have serious implications for the cryosphere in the HTP and impact climate on regional to global scales. Since the current study focuses on one particularly strong pollution episode, quantifying the frequency and magnitude of similar events in a climatological study is required to assess the total impact. |
| 收录类别 | SCI |
| 语种 | 英语 |
| 源URL | [http://ir.casnw.net/handle/362004/27586]  |
| 专题 | 寒区旱区环境与工程研究所_中科院寒区旱区环境与工程研究所（未分类）_期刊论文 |
| 推荐引用方式 GB/T 7714 | Luthi Z. L.,Skerlak B.,Kim S. W.,et al. Atmospheric brown clouds reach the Tibetan Plateau by crossing the Himalayas (SCI)[J]. Atmospheric Chemistry and Physics,2015,15(11):6007-6021. |
| APA | Luthi Z. L..,Skerlak B..,Kim S. W..,Lauer A..,Mues A..,...&Kang S..(2015).Atmospheric brown clouds reach the Tibetan Plateau by crossing the Himalayas (SCI).Atmospheric Chemistry and Physics,15(11),6007-6021. |
| MLA | Luthi Z. L.,et al."Atmospheric brown clouds reach the Tibetan Plateau by crossing the Himalayas (SCI)".Atmospheric Chemistry and Physics 15.11(2015):6007-6021. |
入库方式： OAI收割
来源：寒区旱区环境与工程研究所
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