Spatial-Temporal Variations in January Precipitation over the Period of 1950-2000 in Pakistan and Possible Links with Global Teleconnections: Geographical Perspective
Spatial-Temporal Variations in January Precipitation over the Period of 1950-2000 in Pakistan and Possible Links with Global Teleconnections: Geographical Perspective作者机构：Department of Geography University of Balochistan Quetta Pakistan Pakistan Meteorological Department Islamabad & Institute of Space and Earth Information Science Chinese University of Hong Kong Hong Kong China Key Laboratory of Meteorological Disaster Ministry of Education Nanjing University of Information Science & Technology Nanjing China
出 版 物：《American Journal of Climate Change》 (美国气候变化期刊（英文）)
年 卷 期：2014年第3卷第4期
页 面：378-387页
学科分类：07[理学] 070601[理学-气象学] 0706[理学-大气科学]
主 题：Pakistan January Precipitation EOF Analysis Spatial-Temporal Variability
摘 要：Empirical Orthogonal Function (EOF) was performed to investigate spatial variation in January precipitation over Pakistan using ground observed mean monthly precipitation data from 1950-2000 with a combination of gridded reanalysis data of sea level pressure (SLP) and 500 hPa geopotential height. The leading EOF mode captures 37.51% of the total variance and the spatial-temporal variability of January precipitation was consistent in the study area. The temporal changes explicate non-periodic interannual variability and some tacit interdecadal variation. The anomalous condition is more prominent along the western bordering mountains and northern high mountainous region than any other region of Pakistan. Based on results the study reveals spatial-temporal variation in January precipitation and possible links with global teleconnections located both in the proximity as well as in the remote areas from the study locus.
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