SYNOPTIC ANALYSIS OF HEAVY PRECIPITATIONS OF KURDISTAN PROVINCE

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DARAND MOHAMMAD

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Journal: JOURNAL OF GEOGRAPHICAL SCIENCES Year:2015 | Volume:15 | Issue:37 Page(s): 0-0

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Title

SYNOPTIC ANALYSIS OF HEAVY PRECIPITATIONS OF KURDISTAN PROVINCE

Author(s)

DARAND MOHAMMAD | Issue Writer Certificate

Keywords

HEAVY PRECIPITATIONQ2

FLOODQ2

SYNOPTIC ANALYSISQ2

KURDISTANQ2

MOISTURECONVERGENCE FLUXQ1

Abstract

The aim of this study is SYNOPTIC ANALYSIS of HEAVY PRECIPITATIONs in KURDISTANProvince during 1/1/1961 to 31/12/2010(18263days). By using two thresholds ofextensively and intensity of precipitation, 107 days have been recognized. Intemporal view, the selected days occurrences in wet seasons of year that startfrom October to June. By applying the principle component analysis on the sealevel pressure during the 107 days, the results showed that 12 componentsexplain about 93 percent of sea level pressure variation. The results of theapplying cluster analysis on the component score showed that two circulationpatterns result in occurrence of extreme and HEAVY PRECIPITATIONs in KURDISTANprovince. In order to recognize HEAVY PRECIPITATION in dry season (June toOctober), the area mean precipitation for the province have been calculated. According to the 99 percentile threshold and extensively of precipitation theheavy phenomena recognized. By two thresholds 32 days selected and same asto the wet season precipitation the sea level pressure data from NOAA extracted. The data analyzed by Principle Component Analysis and 11 componentsextracted that explain the 93 percent of variation sea level pressure in the framestudy. By doing cluster analysis on the 11 components, one pattern recognizedfor the sea level pressure. The results showed that in lower atmospheric levels(1000, 925 and 850 hpa) occurred highest convergence on the study regionduring wet season. The source of humidity in the lower levels is Arabian, Red, Oman, Persian Gulf and Mediterranean Seas. In the high level atmosphere, thevalue of convergence is low. The sources of humidity in high levels atmosphereare Red and Mediterranean Seas. In the mid-level atmosphere (500 hpa) thepresence of trough results in nutrition of the instability on the study region. Alsoduring dry season, the highest moisture flux convergence occurred in the lowlevels but the resource of the moisture is Caspian Sea. In the upper levels (from700 hpa to up) in addation to Caspian Sea, Mediterranean and Red sea are theresource of HEAVY PRECIPITATIONs.

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APA: Copy

DARAND, MOHAMMAD. (2015). SYNOPTIC ANALYSIS OF HEAVY PRECIPITATIONS OF KURDISTAN PROVINCE. JOURNAL OF GEOGRAPHICAL SCIENCES, 15(37 ), 0-0. SID. https://sid.ir/paper/360352/en

Vancouver: Copy

DARAND MOHAMMAD. SYNOPTIC ANALYSIS OF HEAVY PRECIPITATIONS OF KURDISTAN PROVINCE. JOURNAL OF GEOGRAPHICAL SCIENCES[Internet]. 2015;15(37 ):0-0. Available from: https://sid.ir/paper/360352/en

IEEE: Copy

MOHAMMAD DARAND, “SYNOPTIC ANALYSIS OF HEAVY PRECIPITATIONS OF KURDISTAN PROVINCE,” JOURNAL OF GEOGRAPHICAL SCIENCES, vol. 15, no. 37 , pp. 0–0, 2015, [Online]. Available: https://sid.ir/paper/360352/en

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