DOI: 10.3354/cr01389
Scopus记录号: 2-s2.0-84974632963
论文题名: Recent changes in continentality and aridity conditions over the middle east and north Africa region, and their association with circulation patterns
作者: Kenawy A.M.E. ; McCabe M.F. ; Vicente-Serrano S.M. ; Robaa S.M. ; Lopez-Moreno J.I.
刊名: Climate Research
ISSN: 0936577X
出版年: 2016
卷: 69, 期: 1 起始页码: 25
结束页码: 43
语种: 英语
英文关键词: Aridity
; Circulation patterns
; Continentality
; MENA
; Middle east and north Africa
; Precipitation
; Temperature
Scopus关键词: aridity
; atmospheric circulation
; climate change
; climate conditions
; precipitation (climatology)
; spatial variation
; statistical analysis
; temperature effect
; Indian Ocean
; Mediterranean Sea
; Middle East
; Nile Basin
英文摘要: A long-term (1960-2013) assessment of the variability of continentality and aridity conditions over the Middle East and North Africa (MENA) region was undertaken. Monthly gridded temperature and precipitation data from the Climate Research Unit (CRU) (TS3.22 version) were used to compute the Johansson Continentality Index (JCI) and the Marsz Oceanity Index (MOI). In addition, the De Martonne index and the Pinna index were employed to assess recent changes in aridity conditions. All indices revealed a statistically significant increase in continental influences over the region, particularly in the Nile Basin and the Fertile Crescent. For aridity, the results suggested a generally statistically insignificant increase, with the most rapid changes occurring over the most humid regions (i.e. the Ethiopian Highlands and the Fertile Crescent). In order to explain the observed changes in the continentality and aridity conditions, we assessed the relationship between aridity and continentality indices and a wide range of large-scale circulation patterns. Results indicate that the spatial variability of continentality (as well as aridity) was closely coupled with the Atlantic modes of variability, e.g. the Eastern Atlantic pattern and the Atlantic Meridional Mode, compared to those of the Mediterranean Sea and the Indian Ocean. The results of this work highlight change processes in 2 important climate features in one of the hottest regions on Earth. Improving our understanding of the spatio-temporal characteristics of climate continentality and aridity has implications for a diversity of socio-political, economic, hydrological, and ecological activities in the MENA region. © Inter-Research 2016. Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/116394
Appears in Collections: 气候减缓与适应
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Recommended Citation:
Kenawy A.M.E.,McCabe M.F.,Vicente-Serrano S.M.,et al. Recent changes in continentality and aridity conditions over the middle east and north Africa region, and their association with circulation patterns[J]. Climate Research,2016-01-01,69(1)