Meteorological drought and its large-scale climate patterns in each season in Central Asia from 1901 to 2015

doi:10.1007/s10584-021-03131-y

	Meteorological drought and its large-scale climate patterns in each season in Central Asia from 1901 to 2015
	Zhang, Xuezhen 1,2; He, Miao 1,2; Bai, Mengxin 1,2; Ge, Quansheng 1
刊名	CLIMATIC CHANGE
	2021-06-01
卷号	166 期号:3-4 页码:18
关键词	Meteorological drought Large-scale climate pattern Central Asia Twentieth century
ISSN号	0165-0009
DOI	10.1007/s10584-021-03131-y
通讯作者	Ge, Quansheng(geqs@igsnrr.ac.cn)
英文摘要	The long-term variations in meteorological drought and its large-scale climate patterns in each season in Central Asia from 1901 to 2015 remain unclear. Here, this issue is addressed using meteorology measurements and reanalysis data through correlation and composite analyses. The drought intensity index (DII) and extent index (DEI) do not exhibit significant linear trends from 1901 to 2015 but do exhibit interannual to interdecadal variations. Both the DII and DEI are highly correlated with the tropical Nino 4 sea surface temperature (SST) and extratropical atmospheric teleconnections, including the East Atlantic (EA) pattern, the East Atlantic/West Russia (EAWR) pattern, and the Arctic oscillation (AO), but with seasonal discrepancies in terms of the degree of influence. The winter drought is strongly linked to both the negative EA and negative EAWR patterns, while spring and autumn drought are strongly linked to the negative EAWR and negative EA patterns, respectively. In the winter, spring, and autumn, drought is also closely linked to below normal Nino 4 SST. The links to EA and EAWR patterns are mainly derived from their impacts on precipitation in the central and northern sectors, while the link to Nino 4 SST is mainly derived from its impacts on precipitation in the southern sector. By considering both drought intensity and drought extent, the ten extreme drought years for each season are selected and, through composite analysis, their large-scale climate patterns are studied. The extreme drought generally occurs in the contexts of a negative EA pattern in winter, a negative EAWR pattern in spring, and a negative AO pattern in autumn. As an exception, summer drought is weakly correlated with Nino 4 SST and is not correlated with extratropical atmospheric teleconnections.
资助项目	Strategic Priority Research Program of the Chinese Academy of Sciences[XDA20020202] ; National Natural Science Foundation of China[41790424] ; CAS[ZDRW-ZS-2017-4] ; CAS[QYZDBSSW-DQC005]
WOS关键词	AREA-DURATION ANALYSIS ; CENTRAL-SOUTHWEST ASIA ; INDIAN-OCEAN ; SUMMER RAINFALL ; PRECIPITATION VARIABILITY ; 20TH-CENTURY DROUGHT ; IMPACTS ; VEGETATION ; BASIN
WOS研究方向	Environmental Sciences & Ecology ; Meteorology & Atmospheric Sciences
语种	英语
出版者	SPRINGER
WOS记录号	WOS:000691294400001
资助机构	Strategic Priority Research Program of the Chinese Academy of Sciences ; National Natural Science Foundation of China ; CAS
内容类型	期刊论文
源URL	[http://ir.igsnrr.ac.cn/handle/311030/165001]
专题	中国科学院地理科学与资源研究所
通讯作者	Ge, Quansheng
作者单位	1.Chinese Acad Sci, Inst Geog Sci & Nat Resources Res, Key Lab Land Surface Pattern & Simulat, Beijing 100101, Peoples R China 2.Univ Chinese Acad Sci, Beijing 100049, Peoples R China
推荐引用方式 GB/T 7714	Zhang, Xuezhen,He, Miao,Bai, Mengxin,et al. Meteorological drought and its large-scale climate patterns in each season in Central Asia from 1901 to 2015[J]. CLIMATIC CHANGE,2021,166(3-4):18.
APA	Zhang, Xuezhen,He, Miao,Bai, Mengxin,&Ge, Quansheng.(2021).Meteorological drought and its large-scale climate patterns in each season in Central Asia from 1901 to 2015.CLIMATIC CHANGE,166(3-4),18.
MLA	Zhang, Xuezhen,et al."Meteorological drought and its large-scale climate patterns in each season in Central Asia from 1901 to 2015".CLIMATIC CHANGE 166.3-4(2021):18.