气候变化领域集成服务门户(CCPortal): Drought assessment of southwestern China based on HadGEM2-ES model under representative concentration pathway 4.5 scenario

CCPortal

DOI	10.1007/s11069-020-03928-7
	Drought assessment of southwestern China based on HadGEM2-ES model under representative concentration pathway 4.5 scenario
	Leng X.; Liu X.; Gao Y.; Liu Y.; Yang Q.; Sun G.; Peng Y.; Huang Y.
发表日期	2020
ISSN	0921030X
起始页码	307
结束页码	334
卷号	102 期号:1
英文摘要	This paper analyzed the drought situation in southwestern China with the standardized precipitation index (SPI) and the standardized precipitation–evapotranspiration index (SPEI) on multiple time scales. The spatial distribution, seasonal variation and features of drought in southwestern China were examined separately by drought frequency, probability of non-exceedance and runs theory. The results showed that the precipitation sequence will change suddenly near 2073 and an obvious, long-term drought will occur after 2073 due to the decline in precipitation. The spatial distribution of drought frequency indicated that the drought frequency will grow obviously in 2071–2100, and the growth rate will increase from the peripheral to the center of the region. The probability of non-exceedance for SPEI-1 less than − 1.0 will be 14.6% in the spring of 2011–2040, grow in 2041–2070 and reach 25.9% in 2071–2100, while that of SPEI in winter will gradually increase in all periods. When the SPEI-12 is smaller than − 1.0, the non-exceedance probability of the index in all seasons of 1981–2100 was and will be growing gradually, indicating that climate change has and will cause severe droughts in spring and winter from 1981 through 2100, especially the medium- and long-term drought. Through the analysis of the SPI and SPEI time sequences by runs theory, it is observed that the drought severity predicted by SPI-12 was and will be increasing over time, and the long-term drought will become more serious. On all time scales, if the SPEI is smaller than − 1.0, the drought duration will gradually increase from 1981–2010 to 2071–2100, indicating the drought in the study region will worsen due to climate change. © 2020, Springer Nature B.V.
关键词	Drought character Runs theory Spatial distribution Standardized precipitation index Standardized precipitation–evapotranspiration index The sudden changes
英文关键词	assessment method; concentration (composition); drought; evapotranspiration; numerical model; precipitation assessment; scenario analysis; seasonal variation; spatiotemporal analysis; China
语种	英语
来源期刊	Natural Hazards
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/205782
作者单位	Faculty of Agriculture and Food, Kunming University of Science and Technology, Kunming, Yunnan 650500, China; Institute of Geographic Sciences and Natural Resources Research, Chinese Academy of Sciences (CAS), Beijing, 100101, China
推荐引用方式 GB/T 7714	Leng X.,Liu X.,Gao Y.,et al. Drought assessment of southwestern China based on HadGEM2-ES model under representative concentration pathway 4.5 scenario[J],2020,102(1).
APA	Leng X..,Liu X..,Gao Y..,Liu Y..,Yang Q..,...&Huang Y..(2020).Drought assessment of southwestern China based on HadGEM2-ES model under representative concentration pathway 4.5 scenario.Natural Hazards,102(1).
MLA	Leng X.,et al."Drought assessment of southwestern China based on HadGEM2-ES model under representative concentration pathway 4.5 scenario".Natural Hazards 102.1(2020).