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GeoRes 2013, 28(1): 163-176 Back to browse issues page
Trend Analysis of Annual Threshold Heavy Precipitation Over Iran
Bakhtyar Mohammadi *
Kurdistan University , b.mohammadi@uok.ac.ir
Abstract:   (2495 Views)
In this study، trends of threshold heavy precipitation were examined on the basis of measurements of 1437 stations (included synoptic، climatic and rain gage stations) in Iran for the period of 40 years (1964-2003). For this purpose، the statistical method of nonparametric Mann-Kendall test is used for analyzinging the thresholds of heavy precipitation and nonparametric Sen Method for estimating the slope of a linear trend. The results showed that there is a significant increasing trend in threshold of annual heavy precipitation over Iran، especially from 1992 to 2003 and this increasing is estimated as an average of 0.5 mm per year. Meanwhile، maximum and minimum thresholds of heavy precipitation which is estimated are obtained respectively 0.78 mm and 0.22 mm for every year. 
Keywords: Trend Analysis, Thresholds Precipitation, Mann, Kendall, Heavy Precipitation, Iran
Full-Text [PDF 510 kb]   (1229 Downloads)    
Article Type: Original Research | Subject: Climatology
Received: 2018/06/11 | Accepted: 2018/06/11 | Published: 2018/06/11
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Mohammadi B. Trend Analysis of Annual Threshold Heavy Precipitation Over Iran . GeoRes. 2013; 28 (1) :163-176
URL: http://georesearch.ir/article-1-513-en.html


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Volume 28, Issue 1 (2013) Back to browse issues page
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