气候变化领域集成服务门户(CCPortal): Identification of drought events in the major basins of Central Asia based on a combined climatological deviation index from GRACE measurements

CCPortal

DOI	10.1016/j.atmosres.2020.105105
	Identification of drought events in the major basins of Central Asia based on a combined climatological deviation index from GRACE measurements
	Yang P.; Zhang Y.; Xia J.; Sun S.
发表日期	2020
ISSN	0169-8095
卷号	244
英文摘要	Under climate change, droughts are causing increasingly larger damages around the world, attracting the attention of governments and researchers. In this study, the terrestrial water storage anomalies (TWSA) obtained from a Gravity Recovery and Climate Experiment (GRACE) were coupled with precipitation, creating a Combined Climatological Deviation Index (CCDI). This index was used to analyze the drought events that occurred in the major basins of Central Asia between April 2002–June 2017. The main conclusions are as follows: (1) the certain but not significant (i.e., p > .05) impacts of precipitation were detected on the total water storage anomalies (TWSA) of three basins (i.e., Irtysh River Basin (IRB), Syr Darya Basin (SDB), and Amu Darya Basin (ADB)) that originate from the Tienshan Mountains based on the correlation coefficient between precipitation and terrestrial water storage (TWS); (2) the Drought Severity Index (DSI), the Palmer Drought Severity Index (PDSI), and the Standardized Precipitation Index over a 12-month scale (SPI12) were related to the CCDI in the major basins of Central Asia, suggesting that the CCDI can be applied effectively to assess the drought characteristics of these basins; (3) the most severe drought events detected by the CCDI in the IRB, SDB, and ADB occurred in 2012, 2014, and 2014, respectively. A humidification trend was observed for the IRB, while a drought trend was observed in the SDB and ADB. Therefore, it appears that the CCDI can be effectively applied to determine the severity of droughts, increase water-saving awareness, and avoid the effects of droughts. © 2020 Elsevier B.V.
关键词	Climate change Water conservation Correlation coefficient Drought characteristics Drought severity Gravity recovery and climate experiments Palmer drought severity indices Standardized precipitation index Terrestrial water storage Water - savings Drought drought GRACE identification method precipitation (climatology)spatial distribution temporal distribution water storage Amu Darya Basin Central Asia Irtysh Basin Syr Darya Basin
语种	英语
来源机构	Atmospheric Research
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/132391
推荐引用方式 GB/T 7714	Yang P.,Zhang Y.,Xia J.,et al. Identification of drought events in the major basins of Central Asia based on a combined climatological deviation index from GRACE measurements[J]. Atmospheric Research,2020,244.
APA	Yang P.,Zhang Y.,Xia J.,&Sun S..(2020).Identification of drought events in the major basins of Central Asia based on a combined climatological deviation index from GRACE measurements.,244.
MLA	Yang P.,et al."Identification of drought events in the major basins of Central Asia based on a combined climatological deviation index from GRACE measurements".244(2020).