气候变化领域集成服务门户(CCPortal): Long-term variability and trends of meteorological droughts in Ukraine

CCPortal

DOI	10.1002/joc.8416
	Long-term variability and trends of meteorological droughts in Ukraine
	Semenova, Inna; Vicente-Serrano, Sergio M.
发表日期	2024
ISSN	0899-8418
EISSN	1097-0088
起始页码	44
结束页码	6
卷号	44 期号:6
英文摘要	The purpose of this research is to identify changes in the spatiotemporal distribution and severity of meteorological droughts in Ukraine between 1946 and 2020. In order to determine the role of precipitation and atmospheric evaporative demand on drought severity, two drought indices were applied for comparative analysis: the standardized precipitation index (SPI) and the standardized evaporation precipitation index (SPEI). Both indices were calculated on 3- and 12-month timescales. The gridded dataset of monthly air temperature and atmospheric precipitation for Ukraine with high spatial resolution (0.1 degrees x 0.1 degrees), developed in the Ukrainian Hydrometeorological Institute, was used. Results of time series analysis of drought indices showed at least 20 episodes, in which more than 25% of the territory of Ukraine was affected by drought of varying intensity. Trends show an increase in drought severity determined mostly by a strong observed increase in the atmospheric evaporative demand. Tendencies towards an increase in the duration and intensity of droughts were observed mainly in the southwestern, central and northern regions of Ukraine. The main cause of the increase was droughts in spring and summer. The temporal analysis of the spatial distribution of areas affected by drought during the identified main drought episodes showed different patterns in drought propagation across the territory of Ukraine. The purpose of this research is to identify changes in the spatiotemporal distribution and severity of meteorological droughts in Ukraine between 1946 and 2020. Trends show an increase in drought severity determined mostly by a strong observed increase in the atmospheric evaporative demand. image
英文关键词	atmospheric evaporative demand; drought; drought propagation; SPEI; SPI
语种	英语
WOS研究方向	Meteorology & Atmospheric Sciences
WOS类目	Meteorology & Atmospheric Sciences
WOS记录号	WOS:001178410300001
来源期刊	INTERNATIONAL JOURNAL OF CLIMATOLOGY
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/299579
作者单位	Consejo Superior de Investigaciones Cientificas (CSIC); CSIC - Instituto Pirenaico de Ecologia (IPE); Ministry of Education & Science of Ukraine; Odessa State Environmental University; Consejo Superior de Investigaciones Cientificas (CSIC); CSIC - Instituto Pirenaico de Ecologia (IPE)
推荐引用方式 GB/T 7714	Semenova, Inna,Vicente-Serrano, Sergio M.. Long-term variability and trends of meteorological droughts in Ukraine[J],2024,44(6).
APA	Semenova, Inna,&Vicente-Serrano, Sergio M..(2024).Long-term variability and trends of meteorological droughts in Ukraine.INTERNATIONAL JOURNAL OF CLIMATOLOGY,44(6).
MLA	Semenova, Inna,et al."Long-term variability and trends of meteorological droughts in Ukraine".INTERNATIONAL JOURNAL OF CLIMATOLOGY 44.6(2024).