DOI: 10.3354/cr01409
Scopus记录号: 2-s2.0-84984698543
论文题名: Linkages between snow cover, temperature and rainfall and the North Atlantic Oscillation over Morocco
作者: Marchane A. ; Jarlan L. ; Boudhar A. ; Tramblay Y. ; Hanich L.
刊名: Climate Research
ISSN: 0936577X
出版年: 2016
卷: 69, 期: 3 起始页码: 229
结束页码: 238
语种: 英语
英文关键词: Mediterranean areas
; MODIS
; NAO
; Semi-arid
; Snow cover
Scopus关键词: air temperature
; forecasting method
; MODIS
; North Atlantic Oscillation
; rainfall
; remote sensing
; semiarid region
; snow cover
; snowpack
; spatiotemporal analysis
; water resource
; Mediterranean Region
; Morocco
英文摘要: Snowpack significantly contributes to water resources in North Africa. The objective of this work was to analyze the impact of the North Atlantic Oscillation (NAO) on rainfall and temperature in Morocco at a sub-seasonal scale and to evaluate, for the first time, linkages between the NAO and snow cover area (SCA) derived from remote sensing observations. For this purpose, we analyzed daily SCA products (2000-2013) from the MODIS sensor, meteorological data from 37 stations (1993-2011), NCEP re-analysis of surface air temperature and rainfall rate, and a monthly NAO index. The linear linkages sought using simple correlation analysis demonstrated that negative (positive) NAO (1) is associated with enhanced (reduced) rainfall in December and February for the northern part of the country; (2) occurs with above-normal (below-normal) temperature and, in contrast with rainfall, the correlation persists far inland and late in the season. These results highlight a possible competing influence of NAO on the snowpack dynamic through rainfall and temperature. Indeed, negative (positive) NAO tends to favor earlier (later) melting and lesser (greater) SCA in spring (April-May) through milder temperatures. Results have direct implications for seasonal forecast of SCA in Morocco. © Inter-Research 2016. Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/116385
Appears in Collections: 气候减缓与适应
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Recommended Citation:
Marchane A.,Jarlan L.,Boudhar A.,et al. Linkages between snow cover, temperature and rainfall and the North Atlantic Oscillation over Morocco[J]. Climate Research,2016-01-01,69(3)