干旱区生态环境知识资源中心(Arid): Global Characterization of the Varying Responses of the Standardized Precipitation Evapotranspiration Index to Atmospheric Evaporative Demand

Arid

DOI	10.1029/2020JD033017
	Global Characterization of the Varying Responses of the Standardized Precipitation Evapotranspiration Index to Atmospheric Evaporative Demand
	Tomas-Burguera, M.; Vicente-Serrano, S. M.; Pena-Angulo, D.; Dominguez-Castro, F.; Noguera, I.; El Kenawy, A.
通讯作者	Vicente-Serrano, SM
来源期刊	JOURNAL OF GEOPHYSICAL RESEARCH-ATMOSPHERES
ISSN	2169-897X
EISSN	2169-8996
出版年	2020
卷号	125 期号:17
英文摘要	The standardized precipitation evapotranspiration index (SPEI) is one of the well-established drought metrics worldwide. It is simply computed using precipitation and atmospheric evaporative demand (AED) data. Although AED is considered a key driver of drought variability worldwide, it could have less impact on drought in specific regions and for particular times as a function of the magnitude of precipitation. Specifically, the influence of the AED might overestimate drought severity during both normal and humid periods, resulting in false alarms about drought impacts on physical and human environments. Here, we provided a global characterization of the sensitivity of the SPEI to changes of the AED. Results demonstrate that the contribution of AED to drought severity is largely impacted by the spatial and temporal variability of precipitation. Specifically, the impact of AED on drought severity was more pronounced during periods of low precipitation, compared to wet periods. Interestingly, drought severity in humid regions (as revealed by SPEI) also showed low sensitivity to AED under drier conditions. These results highlight the skill of SPEI in identifying the role of AED in drought evolution, especially in arid and semiarid regions whose climate is characterized typically by low precipitation. This advantage was also evident for humid environments, where SPEI did not overestimate drought severity due to the increased AED. These findings highlight the broader applicability of SPEI to accurately characterize drought severity worldwide.
英文关键词	drought severity climate change soil moisture SPEI atmospheric evaporative demand
类型	Article
语种	英语
开放获取类型	Green Accepted
收录类别	SCI-E
WOS记录号	WOS:000571890800013
WOS关键词	CLIMATE-CHANGE ; SOIL-MOISTURE ; TREE MORTALITY ; DROUGHT INDICATORS ; IN-SITU ; WATER ; VARIABILITY ; SENSITIVITY ; VEGETATION ; TRENDS
WOS类目	Meteorology & Atmospheric Sciences
WOS研究方向	Meteorology & Atmospheric Sciences
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/326445
作者单位	[Tomas-Burguera, M.] Consejo Super Invest Cient EEAD CSIC, Estn Expt Aula Dei, Zaragoza, Spain; [Vicente-Serrano, S. M.; Pena-Angulo, D.; Noguera, I.] Consejo Super Invest Cient IPE CSIC, Inst Pirena Ecol, Zaragoza, Spain; [Dominguez-Castro, F.] Aragonese Agcy Res & Dev Researcher ARAID, Zaragoza, Spain; [Dominguez-Castro, F.] Univ Zaragoza, Dept Geog, Zaragoza, Spain; [El Kenawy, A.] Mansoura Univ, Dept Geog, Mansoura, Egypt; [El Kenawy, A.] Sultan Qaboos Univ, Dept Geog, Al Khoud, Oman
推荐引用方式 GB/T 7714	Tomas-Burguera, M.,Vicente-Serrano, S. M.,Pena-Angulo, D.,et al. Global Characterization of the Varying Responses of the Standardized Precipitation Evapotranspiration Index to Atmospheric Evaporative Demand[J],2020,125(17).
APA	Tomas-Burguera, M.,Vicente-Serrano, S. M.,Pena-Angulo, D.,Dominguez-Castro, F.,Noguera, I.,&El Kenawy, A..(2020).Global Characterization of the Varying Responses of the Standardized Precipitation Evapotranspiration Index to Atmospheric Evaporative Demand.JOURNAL OF GEOPHYSICAL RESEARCH-ATMOSPHERES,125(17).
MLA	Tomas-Burguera, M.,et al."Global Characterization of the Varying Responses of the Standardized Precipitation Evapotranspiration Index to Atmospheric Evaporative Demand".JOURNAL OF GEOPHYSICAL RESEARCH-ATMOSPHERES 125.17(2020).