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| DOI | 10.5194/acp-15-6007-2015 |
| Atmospheric brown clouds reach the Tibetan Plateau by crossing the Himalayas | |
| Luthi, Z. L.; Skerlak, B.; Kim, S. -W.; Lauer, A.; Mues, A.; Rupakheti, M.; Kang, S. | |
| 通讯作者 | Luthi, ZL (通讯作者) |
| 发表日期 | 2015 |
| ISSN | 1680-7316 |
| EISSN | 1680-7324 |
| 起始页码 | 6007 |
| 结束页码 | 6021 |
| 卷号 | 15期号:11 |
| 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. |
| 关键词 | AEROSOL OPTICAL-PROPERTIESSKY RADIANCE MEASUREMENTSP 5079 MBLACK CARBONCLIMATE-CHANGEASIAPOLLUTIONGLACIERSAERONETTRANSPORT |
| 语种 | 英语 |
| WOS研究方向 | Environmental Sciences & Ecology ; Meteorology & Atmospheric Sciences |
| WOS类目 | Environmental Sciences ; Meteorology & Atmospheric Sciences |
| WOS记录号 | WOS:000356180900001 |
| 来源期刊 | ATMOSPHERIC CHEMISTRY AND PHYSICS
 |
| 来源机构 | 中国科学院青藏高原研究所 |
| 文献类型 | 期刊论文 |
| 条目标识符 | http://gcip.llas.ac.cn/handle/2XKMVOVA/258541 |
| 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[J]. 中国科学院青藏高原研究所,2015,15(11). |
| 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.ATMOSPHERIC CHEMISTRY AND PHYSICS,15(11). |
| MLA | Luthi, Z. L.,et al."Atmospheric brown clouds reach the Tibetan Plateau by crossing the Himalayas".ATMOSPHERIC CHEMISTRY AND PHYSICS 15.11(2015). |
| 条目包含的文件 | 条目无相关文件。 | |||||
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