Persian
Language
Geographical Research is Published in Persian Fulltext.
Volume 34, Issue 2 (2019)
GeoRes 2019, 34(2): 183-192 |
Back to browse issues page
Article Type:
Subject:
History
Received: 2018/09/18 | Accepted: 2019/04/27 | Published: 2019/06/3
Received: 2018/09/18 | Accepted: 2019/04/27 | Published: 2019/06/3
How to cite this article
Mohamadyariyan M, Tavousi T, khosravi M, Hamidiyanpour M. Zoning of Iranian Heavy Precipitation Regime. GeoRes 2019; 34 (2) :183-192
URL: http://georesearch.ir/article-1-612-en.html
URL: http://georesearch.ir/article-1-612-en.html
Download citation:
BibTeX | RIS | EndNote | Medlars | ProCite | Reference Manager | RefWorks
Send citation to:
Rights and permissions
BibTeX | RIS | EndNote | Medlars | ProCite | Reference Manager | RefWorks
Send citation to:
1- Department of Geography and Environmental Planning University of Sistan and Baluchestan, Zahedan, Iran
Abstract (3406 Views)
Aims & Backgrounds: One of the most important incidents of heavy precipitation is the heavy loses. Heavy Precipitation regimes can help to identify the climate of each region. Many economic activities (especially agriculture) are adjusted based on the precipitation regime. Change of precipitation regime, in addition to significant environmental impacts, can affect the habits and economic activities and their incomes.
Identification of homogeneous precipitation regions is one of the most important prerequisites for environmental planning, especially resource management and spatial planning programs. This research aimed to zoning the Iranian Heavy precipitation regime over 20 years (1996-2016).
Methodology: The daily precipitation data of 153 synoptic station were used to zoning the heavy precipitation regime. For implementation of the PCA model, a matrix with the dimensions of 153×12 was created. By analyzing the main components on the matrix, the first six components were selected. The stations were grouped in the six areas of homogeneous heavy precipitation by k-mean clustering of Standard score matrix of selective components.
Findings: The regime of autumn heavy precipitation had the most factor score among the 6 regimes. The maximum heavy precipitation of spring-summer pattern (second pattern) was in April to July. The third pattern (absolute spring regime) had the highest heavy precipitation in April and May. The fourth pattern of early winter had the highest heavy precipitation in October, November, December, and January. In the fifth pattern, a large part of the heavy precipitation was in the summer. The heavy precipitation maximum of the sixth pattern was in the summer.
Conclusion: There are 8 regimes of heavy precipitation in Iran which the maximum of heavy precipitation is in the Azerbaijani and north Azerbaijan regimes at the first half of the year and in the other regimes at the second half of the year.
Identification of homogeneous precipitation regions is one of the most important prerequisites for environmental planning, especially resource management and spatial planning programs. This research aimed to zoning the Iranian Heavy precipitation regime over 20 years (1996-2016).
Methodology: The daily precipitation data of 153 synoptic station were used to zoning the heavy precipitation regime. For implementation of the PCA model, a matrix with the dimensions of 153×12 was created. By analyzing the main components on the matrix, the first six components were selected. The stations were grouped in the six areas of homogeneous heavy precipitation by k-mean clustering of Standard score matrix of selective components.
Findings: The regime of autumn heavy precipitation had the most factor score among the 6 regimes. The maximum heavy precipitation of spring-summer pattern (second pattern) was in April to July. The third pattern (absolute spring regime) had the highest heavy precipitation in April and May. The fourth pattern of early winter had the highest heavy precipitation in October, November, December, and January. In the fifth pattern, a large part of the heavy precipitation was in the summer. The heavy precipitation maximum of the sixth pattern was in the summer.
Conclusion: There are 8 regimes of heavy precipitation in Iran which the maximum of heavy precipitation is in the Azerbaijani and north Azerbaijan regimes at the first half of the year and in the other regimes at the second half of the year.
References
1. Alexander L, Zhang X, Peterson TC, Caesar J, Gleason B, Klein Tank AMG, et al (2006). Global observed changes in daily climate extremes of temperature and precipitation. Geological Research, Atmosphere. 111(D5). [DOI:10.1029/2005JD006290]
2. Alijani B (2001). Iran rainfall hydrometeorology. Scientific Information Center (Virtual). 1(1):261-275. [Persian]
3. Alijani B, Mofidi A, Aliakbari Bidokhti A, Jafarpour Z (2011). Atmospheric circulation patterns of the summer rainfalls in the southeast Iran during July 1994. Earth and Space Physics. 37(3):205-227. [Persian]
4. Alijani B (2002). Synoptic climatology. 1st Edition. Tehran: Samt Publication. [Persian]
5. Dinpashoh Y, Fakheri-Fard A, Moghaddam M, Jahanbakhsh S, Mirnia M (2004). Selection of variables for the purpose of regionalization of Iran's precipitation climate using multivariate methods. Journal of Hydrology. 297(1-4):109-123. [DOI:10.1016/j.jhydrol.2004.04.009]
6. Domroes M, Ranatung E (1993). A statistical approach toward a regionalization of daily rainfall in Srilanka. Climatology. 13(7):741-754. [DOI:10.1002/joc.3370130704]
7. Domroes M, Kaviani M, Schaefer D (1998). An analysis of regional and intra-annual precipitation variability over Iran using multivariate statistical methods. Climatology. 61(3-4):151-159. [DOI:10.1007/s007040050060]
8. Dostkamyan M, Mirmosavi SH (2015). The study and analysis the clusters of heavy rainfall threshold in Iran. Geography and Development. 13(41):131-146. [Persian]
9. Farajzadeh-Asl M (1995). Drought analysis and forecasting in Iran [Dissertation]. Tehran: Tarbiat Modares University.
10. Ghayoor HA, Masoudian SA, Azadi M, Noori H (2011). Analysis of temporal and spatial events of the Caspian Sea coastal events. Geographical Researches Quarterly Journal. 100(26):1-30. [Persian]
11. Janbaz Ghobadi Gh, Mofidi A, Zarrin A (2011). Identify the patterns of severe winter rainfall in the southern coastal of the Caspian Sea. Geography and Environmental Planning. 22(2):23-40. [Persian]
12. Masoodian A (2005). Identification of Iran's rainfall regime by cluster analysis. Geographical Research. 37(52):47-59. [Persian]
13. Masoodian A (1998). Investigating the system of temporal and spatial variations of rainfall in Iran [Dissertation]. Isfahan: Isfahan University. [Persian]
14. Masoudian SA, Ataee H (2005). Identification of Iranian rainfall season by cluster analysis. Applied Sociology. 18(1):12-1. [Persian]
15. Masoodian A (2009). Precipitation regions of Iran. Geography and Development. 7(13):79-91. [Persian]
16. Modarres R, Sarhadi A (2011). Statistically-based regionalization of rainfall climates of Iran. Global and Planetary Change. 75(1-2):67-75. [DOI:10.1016/j.gloplacha.2010.10.009]
17. Link:
18. Mofidi A, Zarrin A, Janbaz Ghobadi GR (2007). Determination of the pattern of extreme and fatal precipitation in the southern costal of the Caspian Sea. Physics of Earth and Space. 33(3):131-154. [Persian]
19. Nazeri Tohroodi M, Khalili K, Abbaszadeh-Afshar M, Nazeri-Torodi Z (2013). Comparison of normalizing conversions to normalize monthly rainfall data in different regions of Iran. Water and Soil. 28(2):365-372. [Persian]
20. Seibert P, Frank A, Formayer H (2007). Synoptic and regional patterns of heavy precipitation in Austria. Theoretical and Applied Climatology. 87(1-4):139-153. [DOI:10.1007/s00704-006-0198-8]
21. Peterson TC, Folland C, Gruza G, Hogg W, Mokssit A, Plummer N (2001). Report on the activities of the working group on climate change detection and related rapporteurs 1998-2001. Geneva: World Meteorological Organization.
22. Raziei T (2017). Identification of precipitation regimes of Iran using multivariate methods. Earth and Space Physics. 43(3):695-673. [Persian]
23. Raziei T, Bordi I, Pereira LS (2008). A precipitation-based regionalization for western Iran and regional drought variability. Hydrology and Earth System Sciences. 12:1309-1321. [DOI:10.5194/hess-12-1309-2008]
24. Raziei T, Azizi G (2007). The zoning of the western rainforest regime using principal component analysis and clustering methods. Iran-Water Resources Research. 3(2):46-49. [Persian]
25. Regenmortel GV (1995). Regionalization of Botswana rainfall during the 1980s using principal component
Send email to the article author