Global S&T Development Trend Analysis Platform of Resources and Environment
DOI | 10.1016/j.atmosres.2017.11.015 |
Modelling extreme dry spells in the Mediterranean region in connection with atmospheric circulation | |
Tramblay, Yves1; Hertig, Elke2 | |
2018-04-01 | |
发表期刊 | ATMOSPHERIC RESEARCH |
ISSN | 0169-8095 |
EISSN | 1873-2895 |
出版年 | 2018 |
卷号 | 202页码:40-48 |
文章类型 | Article |
语种 | 英语 |
国家 | France; Germany |
英文摘要 | Long droughts periods can affect the Mediterranean region during the winter season, when most of annual precipitation occurs, and consequently have strong impacts on agriculture, groundwater levels and water resources. The goal of this study is to model annual maximum dry spells lengths (AMDSL) that occur during the extended winter season (October to April). The spatial patterns of extreme dry spells and their relationships with large-scale atmospheric circulation were first investigated. Then, AMDSL were modelled using Generalized Extreme Value (GEV) distributions incorporating climatic covariates, to evaluate the dependences of extreme dry spells to synoptic patterns using an analogue approach. The data from a network of 160 rain gauges having daily precipitation measurements between 1960 and 2009 are considered together with the ERA-20C reanalysis of the 20th century to provide atmospheric variables (geopotential heights, humidity, winds). A regional classification of both the occurrence and the duration of AMDSL helped to distinguish three spatially contiguous regions in which the regional distributions were found homogeneous. From composite analysis, significant positive anomalies in geopotential height (Z500) and negative anomalies in zonal wind (U850) and relative and specific humidity (S850, R850) were found to be associated with AMDSL in the three regions and provided the reference to build analogue days. Finally, non-stationary GEV models have been compared, in which the location and scale parameters are related to different atmospheric indices. Results indicates, at the whole Mediterranean scale, that positives anomalies of the North Atlantic Oscillation index and to a lesser extent the Mediterranean Oscillation index are linked to longer extreme dry spells in the majority of stations. For the three regions identified, the frequency of U850 negative anomalies over North Africa is significantly associated with the magnitude of AMDSL. AMDL are also associated with the frequency of 5850 negative anomalies for the southeastern region, and with positive Z500 anomalies for the Western and North-eastern Mediterranean regions. |
英文关键词 | Extreme Dry spells GEV Mediterranean ERA-20C |
领域 | 地球科学 |
收录类别 | SCI-E |
WOS记录号 | WOS:000426226500005 |
WOS关键词 | PARTIAL DURATION SERIES ; ANNUAL MAXIMUM ; CLIMATE-CHANGE ; PRECIPITATION ; FREQUENCY ; TRENDS ; VARIABILITY ; DROUGHT ; DISTRIBUTIONS ; ADAPTATION |
WOS类目 | Meteorology & Atmospheric Sciences |
WOS研究方向 | Meteorology & Atmospheric Sciences |
引用统计 | |
文献类型 | 期刊论文 |
条目标识符 | http://119.78.100.173/C666/handle/2XK7JSWQ/38186 |
专题 | 地球科学 |
作者单位 | 1.Univ Montpellier, CNRS, IRD, HSM, Montpellier, France; 2.Univ Augsburg, Inst Geog, Augsburg, Germany |
推荐引用方式 GB/T 7714 | Tramblay, Yves,Hertig, Elke. Modelling extreme dry spells in the Mediterranean region in connection with atmospheric circulation[J]. ATMOSPHERIC RESEARCH,2018,202:40-48. |
APA | Tramblay, Yves,&Hertig, Elke.(2018).Modelling extreme dry spells in the Mediterranean region in connection with atmospheric circulation.ATMOSPHERIC RESEARCH,202,40-48. |
MLA | Tramblay, Yves,et al."Modelling extreme dry spells in the Mediterranean region in connection with atmospheric circulation".ATMOSPHERIC RESEARCH 202(2018):40-48. |
条目包含的文件 | 条目无相关文件。 |
个性服务 |
推荐该条目 |
保存到收藏夹 |
查看访问统计 |
导出为Endnote文件 |
谷歌学术 |
谷歌学术中相似的文章 |
[Tramblay, Yves]的文章 |
[Hertig, Elke]的文章 |
百度学术 |
百度学术中相似的文章 |
[Tramblay, Yves]的文章 |
[Hertig, Elke]的文章 |
必应学术 |
必应学术中相似的文章 |
[Tramblay, Yves]的文章 |
[Hertig, Elke]的文章 |
相关权益政策 |
暂无数据 |
收藏/分享 |
除非特别说明,本系统中所有内容都受版权保护,并保留所有权利。
修改评论