气候变化领域集成服务门户(CCPortal): Increased Dust Aerosols in the High Troposphere Over the Tibetan Plateau From 1990s to 2000s

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DOI	10.1029/2020JD032807
	Increased Dust Aerosols in the High Troposphere Over the Tibetan Plateau From 1990s to 2000s
	Feng X.; Mao R.; Gong D.-Y.; Zhao C.; Wu C.; Zhao C.; Wu G.; Lin Z.; Liu X.; Wang K.; Sun Y.
发表日期	2020
ISSN	2169897X
卷号	125 期号:13
英文摘要	Dust aerosols are a major type of aerosol over the Tibetan Plateau (TP) and influence climate at local to regional scales through their effects on thermal radiation and snow-albedo feedback. Based on the Modern-Era Retrospective Analysis for Research and Applications, Version 2 (MERRA-2) aerosol data set, we report an increase of 34% in the atmospheric dust in the high troposphere over the TP during the spring season in the 2000s in comparison to the 1990s. This result is supported by an increase of 157% (46%) in the dust deposition flux in the Mugagangqiong (Tanggula) ice cores and an increase of 69% in the aerosol index (AI) from Earth Probe (EP) Total Ozone Mapping Spectrometer (TOMS), as well as by increases of simulated dust aerosols over the TP derived from the Community Earth System Model (CESM) and models from the Coupled Model Intercomparison Project Phase 6 (CMIP6). The increased atmospheric dust over the TP is caused by two aspects: (1) There was a higher dust emission over the Middle East during the 2000s than during the 1990s, which is explained by less precipitation and 25.8% higher cyclone frequency over the Middle East. The increased cyclone frequency uplift more dust from the surface over the Middle East to the central Asia in the middle troposphere. (2) Enhanced midlatitude zonal winds help transport more dust in the middle troposphere from central Asia to Northwest China, and thereafter, an increase in northerly winds over Northwest China propels dust southward to the TP. ©2020. The Authors.
英文关键词	CMIP 6; dust aerosols; ice core; middle east; the Tibetan Plateau
语种	英语
来源期刊	Journal of Geophysical Research: Atmospheres
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/185925
作者单位	Key Laboratory of Environmental Change and Natural Disaster, Ministry of Education, Beijing Normal University, Beijing, China; Academy of Disaster Reduction and Emergency Management, Faculty of Geographical Science, Beijing Normal University, Beijing, China; State Key Laboratory of Earth Surface Processes and Resource Ecology, Beijing Normal University, Beijing, China; School of Earth and Space Science, University of Science and Technology of China, Hefei, China; International Center for Climate and Environment Sciences, Institute of Atmospheric Physics, Chinese Academy of Sciences, Beijing, China; College of Global Change and Earth System Science, Beijing Normal University, Beijing, China; Institute of Tibetan Plateau Research, Chinese Academy of Sciences, Beijing, China; Department of Atmospheric Sciences, Texas A&M University, College Station, TX, United States
推荐引用方式 GB/T 7714	Feng X.,Mao R.,Gong D.-Y.,et al. Increased Dust Aerosols in the High Troposphere Over the Tibetan Plateau From 1990s to 2000s[J],2020,125(13).
APA	Feng X..,Mao R..,Gong D.-Y..,Zhao C..,Wu C..,...&Sun Y..(2020).Increased Dust Aerosols in the High Troposphere Over the Tibetan Plateau From 1990s to 2000s.Journal of Geophysical Research: Atmospheres,125(13).
MLA	Feng X.,et al."Increased Dust Aerosols in the High Troposphere Over the Tibetan Plateau From 1990s to 2000s".Journal of Geophysical Research: Atmospheres 125.13(2020).