气候变化领域集成服务门户(CCPortal): The synergy between drought and extremely hot summers in the Mediterranean

CCPortal

DOI	10.1088/1748-9326/aaf09e
	The synergy between drought and extremely hot summers in the Mediterranean
	Russo A.; Gouveia C.M.; Dutra E.; Soares P.M.M.; Trigo R.M.
发表日期	2019
ISSN	17489318
卷号	14 期号:1
英文摘要	In the last years a large number of weather driven extreme events has occurred worldwide with unprecedented socio-economic impacts and are expected to increase, in both frequency and intensity, under future global-warming conditions. In this context early identification and predictability of such events are paramount as they mostly affect several socio-economic activities. Despite the effort in monitoring and evaluation of these extreme events, a quantitative assessment of their interaction is still a challenge. We propose to analyze if the occurrence of extremely hot days/nights in the summer is preceded by drought events in spring and early summer throughout the Mediterranean area. This was investigated by correlating the number of hot days and nights in the regions hottest months with a drought indicator on the prior months. Drought characterization was performed using both the Standardized Precipitation Evaporation Index (SPEI) and the Standardized Precipitation Index (SPI) for the 3-, 6- and 9-months time scales, considering the period 1980-2014 with a spatial resolution of 0.5°. The number of hot days and nights per month (NHD and NHN, respectively) is determined for the same period and spatial resolution. Results show that the most frequent hottest months for the Mediterranean region occur in July and August. Most regions exhibit statistically significant negative correlations, i.e. high (low) NHD/NHN following negative (positive) SPEI/SPI values, and thus a potential for NHD/NHN early warning. This analysis allowed to identify the Iberian Peninsula, northern Italy, northern Africa and the Balkans as the main hotspots of predictability of extreme hot temperatures in the summer preceded by the occurrence of drought events in the spring or early summer. © 2019 The Author(s). Published by IOP Publishing Ltd.
英文关键词	concurrent extreme events; drought; heatwaves; hot days; hot nights; meteorological extremes; soil moisture
语种	英语
scopus关键词	Economic and social effects; Economics; Global warming; Image resolution; Soil moisture; Extreme events; Heatwaves; hot days; hot nights; Meteorological extremes; Drought; diurnal variation; drought stress; environmental monitoring; extreme event; heat wave; high temperature; Mediterranean environment; precipitation assessment; spatial resolution; summer; synergism; Africa; Balkans; Iberian Peninsula; Italy
来源期刊	Environmental Research Letters
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/154718
作者单位	Instituto Dom Luiz (IDL), Faculdade de Ciências, Universidade de Lisboa, Lisboa, 1749-016, Portugal; Instituto Português Do Mar e da Atmosfera, Lisboa, Portugal
推荐引用方式 GB/T 7714	Russo A.,Gouveia C.M.,Dutra E.,et al. The synergy between drought and extremely hot summers in the Mediterranean[J],2019,14(1).
APA	Russo A.,Gouveia C.M.,Dutra E.,Soares P.M.M.,&Trigo R.M..(2019).The synergy between drought and extremely hot summers in the Mediterranean.Environmental Research Letters,14(1).
MLA	Russo A.,et al."The synergy between drought and extremely hot summers in the Mediterranean".Environmental Research Letters 14.1(2019).