气候变化领域集成服务门户(CCPortal): Spring Dust Mass Flux over the Tibetan Plateau during 2007-19 and Connections with North Atlantic SST Variability

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DOI	10.1175/JCLI-D-19-0481.1
	Spring Dust Mass Flux over the Tibetan Plateau during 2007-19 and Connections with North Atlantic SST Variability
	Xu, Chao; Ma, Yaoming; Ma, Jiehua; You, Chao; Wang, Huijun
通讯作者	Xu, C (通讯作者)
发表日期	2020
ISSN	0894-8755
EISSN	1520-0442
起始页码	9691
结束页码	9703
卷号	33 期号:22
英文摘要	Dust is the major aerosol type over the Tibetan Plateau (TP), and the TP plays an important role in forming the spring dust belt across the Northern Hemisphere in the upper troposphere. Estimated spring dust mass flux (DMF) showed a significant declining trend over the TP during 2007-19. The total spring DMF across the TP (TDMFTP) was mainly affected by DMFs over the Tarim Basin, while the spring DMF across the TP in the midtroposphere was also connected with DMFs over the northwest Indian Peninsula and central Asia. Interannual variability of springTDMFTP was strongly correlated with the North Atlantic winter sea surface temperature (SST) tripole. A cold preceding winter induced by the North Atlantic winter SST tripole over midlatitude Eurasia promotes dust activities in the subsequent spring. The North Atlantic winter SST tripole anomalies persist into the subsequent spring and induce a corresponding atmosphere response. Enhanced atmospheric baroclinicity develops over northwest China and the northern Indian Peninsula during spring, which is attributed to surface thermal forcing induced by the positive winter SST tripole phase. A strong positive North Atlantic winter SST tripole anomaly strengthens the upper-level westerly jets, enhancing airflow toward the TP midtroposphere; together, these circulation patterns cause anomalous cyclonic conditions in the lower troposphere, especially over the Tarim Basin, via the eastward propagation of a Rossby wave train. These atmospheric circulation conditions are likely to increase the frequency of dust occurrence and promote the transport of dust onto the TP.
关键词	OPTICAL DEPTH RETRIEVALS AEROSOL CLASSIFICATION WEATHER FREQUENCY CYCLONE ACTIVITY OSCILLATION NAO LIDAR RATIO SUMMER TRANSPORT REANALYSIS IMPACTS
英文关键词	Dust or dust storms; Sea surface temperature; Interannual variability; Spring season; Aerosol optical properties
语种	英语
WOS研究方向	Meteorology & Atmospheric Sciences
WOS类目	Meteorology & Atmospheric Sciences
WOS记录号	WOS:000589812200012
来源期刊	JOURNAL OF CLIMATE
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/259868
推荐引用方式 GB/T 7714	Xu, Chao,Ma, Yaoming,Ma, Jiehua,et al. Spring Dust Mass Flux over the Tibetan Plateau during 2007-19 and Connections with North Atlantic SST Variability[J]. 中国科学院青藏高原研究所,2020,33(22).
APA	Xu, Chao,Ma, Yaoming,Ma, Jiehua,You, Chao,&Wang, Huijun.(2020).Spring Dust Mass Flux over the Tibetan Plateau during 2007-19 and Connections with North Atlantic SST Variability.JOURNAL OF CLIMATE,33(22).
MLA	Xu, Chao,et al."Spring Dust Mass Flux over the Tibetan Plateau during 2007-19 and Connections with North Atlantic SST Variability".JOURNAL OF CLIMATE 33.22(2020).