Kaboli, S., Hekmatzadeh, A.A., Darabi, H. et al. Variation in physical characteristics of rainfall in Iran, determined using daily rainfall concentration index and monthly rainfall percentage index. Theor Appl Climatol 144, 507–520 (2021). https://doi.org/10.1007/s00704-021-03553-9
Variation in physical characteristics of rainfall in Iran, determined using daily rainfall concentration index and monthly rainfall percentage index
|Author:||Kaboli, Sadegh1; Hekmatzadeh, Ali Akbar1; Darabi, Hamid2;|
1Department of Civil and Environmental Engineering, Shiraz University of Technology, Po. Box 71555-313, Shiraz, Iran
2Water, Energy and Environmental Engineering Research Unit, University of Oulu, PO Box 4300, F IN-90014, Oulu, Finland
|Online Access:||PDF Full Text (PDF, 4.3 MB)|
|Persistent link:|| http://urn.fi/urn:nbn:fi-fe2021042111291
|Publish Date:|| 2021-04-21
Variations in rainfall characteristics play a key role in available water resources for a country. In this study, spatial and temporal variations in rainfall in Iran were determined using the daily rainfall concentration index (DRCI) and monthly rainfall percentage index (MRPI), based on 30-year (1987–2016) daily precipitation records from 80 meteorological stations throughout Iran. The results showed that MRPI differed between locations within Iran, with increasing or decreasing trends observed in different areas. The highest significant decreasing trend in MRPI (3–7% per decade) was found for March rainfall in western Iran, and the highest increasing trend in MRPI (3–7% per decade) for November rainfall in eastern and southern Iran. The DRCI values obtained varied from 0.57 to 0.71, indicating moderate and high rainfall concentrations, with the highest DRCI values in coastal zones of Iran near the Caspian Sea and the Persian Gulf. Trend analysis showed increasing trends in DRCI values at 80% of meteorological stations, and these trends were significant at 37% of those stations.
Theoretical and applied climatology
|Pages:||507 - 520|
|Type of Publication:||
A1 Journal article – refereed
|Field of Science:||
218 Environmental engineering
Open access funding provided by University of Oulu including Oulu University Hospital.
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