气候变化领域集成服务门户(CCPortal): Arctic sea-ice loss intensifies aerosol transport to the Tibetan Plateau

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DOI	10.1038/s41558-020-0881-2
	Arctic sea-ice loss intensifies aerosol transport to the Tibetan Plateau
	Li, Fei; Wan, Xin; Wang, Huijun; Orsolini, Yvan Joseph; Cong, Zhiyuan; Gao, Yongqi; Kang, Shichang
通讯作者	Li, F (通讯作者)
发表日期	2020
ISSN	1758-678X
EISSN	1758-6798
起始页码	1037
结束页码	+
卷号	10 期号:11
英文摘要	Aerosol transport from South Asia to the Tibetan Plateau (TP) peaks in the pre-monsoon period, but the controlling dynamics remain unclear. Observational analysis shows that low February Arctic sea ice boosts the Asian subtropical jet in April, which can loft aerosols over the Himalayas onto the TP. The Tibetan Plateau (TP) has recently been polluted by anthropogenic emissions transported from South Asia, but the mechanisms conducive to this aerosol delivery are poorly understood. Here we show that winter loss of Arctic sea ice over the subpolar North Atlantic boosts aerosol transport toward the TP in April, when the aerosol loading is at its climatological maximum and preceding the Indian summer monsoon onset. Low sea ice in February weakens the polar jet, causing decreased Ural snowpack via reduced transport of warm, moist oceanic air into the high-latitude Eurasian interior. This diminished snowpack persists through April, reinforcing the Ural pressure ridge and East Asian trough, segments of a quasi-stationary Rossby wave train extending across Eurasia. These conditions facilitate an enhanced subtropical westerly jet at the southern edge of the TP, invigorating upslope winds that combine with mesoscale updrafts to waft emissions over the Himalayas onto the TP.
关键词	NAM CO CARBONACEOUS AEROSOLS OPTICAL DEPTH BASE-LINE CLIMATE IMPACT ALGORITHM POLLUTION MODE SITE
语种	英语
WOS研究方向	Environmental Sciences & Ecology ; Meteorology & Atmospheric Sciences
WOS类目	Environmental Sciences ; Environmental Studies ; Meteorology & Atmospheric Sciences
WOS记录号	WOS:000564515400003
来源期刊	NATURE CLIMATE CHANGE
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/260033
推荐引用方式 GB/T 7714	Li, Fei,Wan, Xin,Wang, Huijun,et al. Arctic sea-ice loss intensifies aerosol transport to the Tibetan Plateau[J]. 中国科学院青藏高原研究所,2020,10(11).
APA	Li, Fei.,Wan, Xin.,Wang, Huijun.,Orsolini, Yvan Joseph.,Cong, Zhiyuan.,...&Kang, Shichang.(2020).Arctic sea-ice loss intensifies aerosol transport to the Tibetan Plateau.NATURE CLIMATE CHANGE,10(11).
MLA	Li, Fei,et al."Arctic sea-ice loss intensifies aerosol transport to the Tibetan Plateau".NATURE CLIMATE CHANGE 10.11(2020).