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DOI10.1175/JCLI-D-17-0313.1
Tibetan Plateau Impacts on Global Dust Transport in the Upper Troposphere
Xu, Chao1; Ma, Yaoming1; Yang, Kun; You, Chao
2018-06-01
发表期刊JOURNAL OF CLIMATE
ISSN0894-8755
EISSN1520-0442
出版年2018
卷号31期号:12页码:4745-4756
文章类型Article
语种英语
国家Peoples R China
英文摘要

Dust is a major component of atmospheric aerosol worldwide, greatly affecting regional and global climate. In this study dust aerosol optical depth (DAOD) and dust mass fluxes(DMF) were evaluated at different altitudes using measurements by the Cloud-Aerosol Lidar with Orthogonal Polarization (CALIOP) and ERA-Interim data from March through May (MAM) for the period 2007-16. Significantly higher uppertropospheric (above similar to 8 km) dust loads and DMF downstream of the Tibetan Plateau (TP) relative to those over other major dust sources of the Northern Hemisphere were found during spring. A DMF magnitude of 10(10) g integrated across a 28-latitude segment during spring was estimated downstream of the TP in the upper troposphere. A dust belt can be clearly seen at altitudes higher than 6 km over the downwind direction of the TP at latitudes of around 30 degrees-40 degrees N, crossing the Pacific Ocean and extending to North America during spring. Apathway for transporting dust aerosols into the upper troposphere is proposed, as follows. Dust is uplifted to the midtroposphere over the source regions; then, frequent, deep, dry convection prevailing over the TP during spring can cause convective overshooting that uplifts the dust aerosols to the upper troposphere. The TP thus acts as a channel for transporting dust from the lower atmosphere to the upper troposphere, enabling the long-range zonal transport of dust around the Northern Hemisphere.


领域气候变化
收录类别SCI-E
WOS记录号WOS:000450688200009
WOS关键词INDIAN-SUMMER MONSOON ; AEROSOL OPTICAL DEPTH ; HETEROGENEOUS LANDSCAPE ; MINERAL DUST ; ASIAN DUST ; NORTH-AFRICA ; MIDDLE-EAST ; SATELLITE ; DISTRIBUTIONS ; CLIMATE
WOS类目Meteorology & Atmospheric Sciences
WOS研究方向Meteorology & Atmospheric Sciences
引用统计
文献类型期刊论文
条目标识符http://119.78.100.173/C666/handle/2XK7JSWQ/20947
专题气候变化
作者单位1.Chinese Acad Sci, Inst Tibetan Plateau Res, Key Lab Tibetan Environm Changes & Land Surface P, Beijing, Peoples R China;
2.Chinese Acad Sci, Ctr Excellence Tibetan Plateau Earth Sci, Beijing, Peoples R China;
3.Univ Chinese Acad Sci, Beijing, Peoples R China
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GB/T 7714
Xu, Chao,Ma, Yaoming,Yang, Kun,et al. Tibetan Plateau Impacts on Global Dust Transport in the Upper Troposphere[J]. JOURNAL OF CLIMATE,2018,31(12):4745-4756.
APA Xu, Chao,Ma, Yaoming,Yang, Kun,&You, Chao.(2018).Tibetan Plateau Impacts on Global Dust Transport in the Upper Troposphere.JOURNAL OF CLIMATE,31(12),4745-4756.
MLA Xu, Chao,et al."Tibetan Plateau Impacts on Global Dust Transport in the Upper Troposphere".JOURNAL OF CLIMATE 31.12(2018):4745-4756.
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