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A study of the Homogenous Rainfall Zones of Iran Using Cluster Analysis Based on TRMM Satellite Data | ||
| Journal of Hydrosciences and Environment | ||
| مقاله 4، دوره 2، شماره 4، اسفند 2018، صفحه 26-32 اصل مقاله (794.57 K) | ||
| نوع مقاله: Research Paper | ||
| شناسه دیجیتال (DOI): 10.22111/jhe.2019.4414 | ||
| نویسندگان | ||
| M. Fatemi* 1؛ M. Narangifard2؛ Kh. Hatami Bahman Beiglou3 | ||
| 1Associate Professor of Climatology, Meybod University, Meybod, Iran. | ||
| 2PHD graduate of Climatology, Yazd University, Yazd, Iran. | ||
| 3PHD graduate of Climatology, University of Isfahan, Isfahan, Iran | ||
| چکیده | ||
| This study aims to evaluate Spatio-temporal distribution of rainfall through cluster analysis based on Tropical Rainfall Measuring Mission (TRMM) in Iran. To this purpose, the daily-gridded rainfall data were derived for the 1998-2013 period. Then, the seasonal and annual time scale cluster analysis was performed on TRMM-derived rainfall data. The results identified 14 clusters in the annual rainfall. As a high- rainfall zone, Guilan has an average rainfall of 1068 mm per year while Sistan, as a low-rainfall area, has an average rainfall of 106.8 mm annually. Furthermore, the seasonal rainfall distribution indicates high-rainfall zones in Guilan and Mazandaran provinces in spring, summer, and autumn while the areas in the southern range of Alborz Mountain and Persian Gulf are clustered as low-rainfall zone. The rainfall distribution in Iran is seasonal, and the following provinces are among the high-rainfall zones in winter: Kohgiluyeh and Boyer Ahmad, Chaharmahal and Bakhtiari, Khuzestan, and highlands of Lorestan. The low-rainfall areas also include Sistan and Baluchistan, Yazd, and Semnan. | ||
| کلیدواژهها | ||
| Precipitation Regions؛ TRMM؛ Clustering analysis (CA)؛ Iran | ||
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