气候变化领域集成服务门户(CCPortal): Detection of homogeneous precipitation regions at seasonal and annual time scales; northwest Iran

CCPortal

DOI	10.2166/wcc.2017.088
	Detection of homogeneous precipitation regions at seasonal and annual time scales; northwest Iran
	Arab Amiri M.; Mesgari M.S.; Conoscenti C.
发表日期	2017
ISSN	20402244
起始页码	701
结束页码	714
卷号	8 期号:4
英文摘要	Detection of homogeneous climate areas is a challenging issue, which can be affected by different criteria. One of the most prominent factors is choosing the time scale, which can lead to different spatial and temporal patterns. Total precipitation is a key factor in climatological studies, and studying its distribution is of utmost importance. The combination of principal components analysis and cluster analysis is used for homogeneous precipitation areas’ detection. Hence, the spatial pattern of total precipitation was investigated in northwestern Iran during the past two decades (1991–2010) on seasonal and annual time scales. The results of clustering on each time scale were validated, and well-defined clusters were investigated and compared with each other. Two homogeneous sub-regions were recognized in spring, the best period for depicting homogeneous precipitation clusters at seasonal resolution. The annual pattern of precipitation delineated three clusters in the study region. Finally, the characteristics of the well-clustered maps reveal the importance of time scale in detection of homogeneous precipitation sub-zones. © IWA Publishing 2017.
英文关键词	Cluster analysis; GIS; Principal component analysis; Time scale; Total precipitation
语种	英语
scopus关键词	Cluster analysis; Geographic information systems; Time measurement; Homogeneous Precipitation; Key factors; Principal components analysis; Spatial and temporal patterns; Spatial patterns; Sub-regions; Time-scales; Total precipitation; Principal component analysis; climatology; cluster analysis; GIS; precipitation (climatology); precipitation assessment; principal component analysis; Iran
来源期刊	Journal of Water and Climate Change
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/148098
作者单位	Department of Geographic Information System, Faculty of Geodesy and Geomatics Eng, K. University of Technology, Tehran, Iran; Department of Geographic Information System, Faculty of Geodesy and Geomatics Eng, Center of Excellence in Geospatial Information Technology (CEGIT), K. N. Toosi University of Technology, Tehran, Iran; Department of Earth and Marine Sciences, University of Palermo, Palermo, Italy
推荐引用方式 GB/T 7714	Arab Amiri M.,Mesgari M.S.,Conoscenti C.. Detection of homogeneous precipitation regions at seasonal and annual time scales; northwest Iran[J],2017,8(4).
APA	Arab Amiri M.,Mesgari M.S.,&Conoscenti C..(2017).Detection of homogeneous precipitation regions at seasonal and annual time scales; northwest Iran.Journal of Water and Climate Change,8(4).
MLA	Arab Amiri M.,et al."Detection of homogeneous precipitation regions at seasonal and annual time scales; northwest Iran".Journal of Water and Climate Change 8.4(2017).