Spatio-temporal patterns of drought evolution over the Beijing-Tianjin-Hebei region, China

doi:10.1007/s11442-019-1633-y

	Spatio-temporal patterns of drought evolution over the Beijing-Tianjin-Hebei region, China
	Zhang, Jie 1; Sun, Fubao 1; Liu, Wenbin 1; Liu, Jiahong 2; Wang, Hong 1
刊名	JOURNAL OF GEOGRAPHICAL SCIENCES
	2019-06-01
卷号	29 期号:6 页码:863-876
关键词	PDSI spatial and temporal patterns sensitivity analysis global warming
ISSN号	1009-637X
DOI	10.1007/s11442-019-1633-y
通讯作者	Sun, Fubao(sunfb@igsnrr.ac.cn)
英文摘要	Spatio-temporal patterns of drought from 1961 to 2013 over the Beijing-Tianjin-Hebei (BTH) region of China were analyzed using the Palmer Drought Severity index (PDSI) based on 21 meteorological stations. Overall, changes in the mean-state of drought detected in recent decades were due to decreases in precipitation and potential evapotranspiration. The Empirical Orthogonal Functions (EOF) method was used to decompose drought into spatio-temporal patterns, and the first two EOF modes were analyzed. According to the first leading EOF mode (48.5%), the temporal variability (Principal Components, PC1) was highly positively correlated with annual series of PDSI (r=+0.99). The variance decomposition method was further applied to explain the inter-decadal temporal and spatial variations of drought relative to the total variation. We find that 90% of total variance was explained by time variance, and both total and time variance dramatically decreased from 1982 to 2013. The total variance was consistent with extreme climate events at the inter-decadal scale (r=0.71, p<0.01). Comparing the influence of climate change on the annual drought in two different long-term periods characterized by dramatic global warming (P1: 1961-1989 and P2: 1990-2013), we find that temperature sensitivity in the P2 was three times more than that in the P1.
资助项目	National Key Research and Development Program of China[2016YFC0401401] ; National Key Research and Development Program of China[2016YFA0602402] ; Key Program of the Chinese Academy of Sciences[ZDRW-ZS-2017-3-1] ; Chinese Academy of Sciences (CAS) Pioneer Hundred Talents Program ; National Natural Science Foundation of China[41601035]
WOS关键词	TRENDS ; EVAPOTRANSPIRATION ; PRECIPITATION ; CLIMATE ; RIVER ; RISK
WOS研究方向	Physical Geography
语种	英语
出版者	SCIENCE PRESS
WOS记录号	WOS:000471039300001
资助机构	National Key Research and Development Program of China ; Key Program of the Chinese Academy of Sciences ; Chinese Academy of Sciences (CAS) Pioneer Hundred Talents Program ; National Natural Science Foundation of China
内容类型	期刊论文
源URL	[http://ir.igsnrr.ac.cn/handle/311030/58745]
专题	中国科学院地理科学与资源研究所
通讯作者	Sun, Fubao
作者单位	1.Chinese Acad Sci, Inst Geog Sci & Nat Resources Res, Key Lab Water Cycle & Related Land Surface Proc, Beijing 100101, Peoples R China 2.China Inst Water Resources & Hydropower Res, Key Lab Simulat & Regulat Water Cycle River Basin, Beijing 100038, Peoples R China
推荐引用方式 GB/T 7714	Zhang, Jie,Sun, Fubao,Liu, Wenbin,et al. Spatio-temporal patterns of drought evolution over the Beijing-Tianjin-Hebei region, China[J]. JOURNAL OF GEOGRAPHICAL SCIENCES,2019,29(6):863-876.
APA	Zhang, Jie,Sun, Fubao,Liu, Wenbin,Liu, Jiahong,&Wang, Hong.(2019).Spatio-temporal patterns of drought evolution over the Beijing-Tianjin-Hebei region, China.JOURNAL OF GEOGRAPHICAL SCIENCES,29(6),863-876.
MLA	Zhang, Jie,et al."Spatio-temporal patterns of drought evolution over the Beijing-Tianjin-Hebei region, China".JOURNAL OF GEOGRAPHICAL SCIENCES 29.6(2019):863-876.