Trends in Extreme Precipitation Indices in Iran: 1951–2007
We investigate trends in extreme precipitation in Iran for 1951–2007 using the recently released APHRODITE daily rainfall time series. We find that seven different indices of extreme precipitation all show an upward trend through the study period. The seven different precipitation indices include an...
Saved in:
| Main Authors: | , , , |
|---|---|
| Format: | Article |
| Language: | English |
| Published: |
Wiley
2016-01-01
|
| Series: | Advances in Meteorology |
| Online Access: | http://dx.doi.org/10.1155/2016/2456809 |
| Tags: |
Add Tag
No Tags, Be the first to tag this record!
|
| _version_ | 1832564270061060096 |
|---|---|
| author | Robert C. Balling Mohammad Sadegh Keikhosravi Kiany Shouraseni Sen Roy Javad Khoshhal |
| author_facet | Robert C. Balling Mohammad Sadegh Keikhosravi Kiany Shouraseni Sen Roy Javad Khoshhal |
| author_sort | Robert C. Balling |
| collection | DOAJ |
| description | We investigate trends in extreme precipitation in Iran for 1951–2007 using the recently released APHRODITE daily rainfall time series. We find that seven different indices of extreme precipitation all show an upward trend through the study period. The seven different precipitation indices include annual precipitation total, number of days above a certain threshold, maximum precipitation received over a certain period of time, maximum one-day precipitation, and number of days with precipitation above the 90th percentile. A principal components analysis reveals one eigenvector explaining much of the variance in the seven indices and reveals that this component exhibits a strong upward trend for the whole of Iran. On a regional level, we find that the upward trend in extreme precipitation has a strong southwest-to-northeast gradient across the country for all the indices. We repeated all the analyses for 42 stations across the country to compare with the results from the gridded data; trends in extreme rainfall generated from the station data compare favorably with the results from the APHRODITE daily rainfall time series thereby reinforcing the robustness of our conclusions. |
| format | Article |
| id | doaj-art-7fc1ae0af7154c2d8ccc4c488fc3df54 |
| institution | Kabale University |
| issn | 1687-9309 1687-9317 |
| language | English |
| publishDate | 2016-01-01 |
| publisher | Wiley |
| record_format | Article |
| series | Advances in Meteorology |
| spelling | doaj-art-7fc1ae0af7154c2d8ccc4c488fc3df542025-02-03T01:11:28ZengWileyAdvances in Meteorology1687-93091687-93172016-01-01201610.1155/2016/24568092456809Trends in Extreme Precipitation Indices in Iran: 1951–2007Robert C. Balling0Mohammad Sadegh Keikhosravi Kiany1Shouraseni Sen Roy2Javad Khoshhal3School of Geographical Sciences and Urban Planning, Arizona State University, Tempe, AZ 85287, USAFaculty of Geographical Sciences and Planning, University of Isfahan, Isfahan, IranDepartment of Geography and Regional Studies, University of Miami, Coral Gables, FL 33146, USAFaculty of Geographical Sciences and Planning, University of Isfahan, Isfahan, IranWe investigate trends in extreme precipitation in Iran for 1951–2007 using the recently released APHRODITE daily rainfall time series. We find that seven different indices of extreme precipitation all show an upward trend through the study period. The seven different precipitation indices include annual precipitation total, number of days above a certain threshold, maximum precipitation received over a certain period of time, maximum one-day precipitation, and number of days with precipitation above the 90th percentile. A principal components analysis reveals one eigenvector explaining much of the variance in the seven indices and reveals that this component exhibits a strong upward trend for the whole of Iran. On a regional level, we find that the upward trend in extreme precipitation has a strong southwest-to-northeast gradient across the country for all the indices. We repeated all the analyses for 42 stations across the country to compare with the results from the gridded data; trends in extreme rainfall generated from the station data compare favorably with the results from the APHRODITE daily rainfall time series thereby reinforcing the robustness of our conclusions.http://dx.doi.org/10.1155/2016/2456809 |
| spellingShingle | Robert C. Balling Mohammad Sadegh Keikhosravi Kiany Shouraseni Sen Roy Javad Khoshhal Trends in Extreme Precipitation Indices in Iran: 1951–2007 Advances in Meteorology |
| title | Trends in Extreme Precipitation Indices in Iran: 1951–2007 |
| title_full | Trends in Extreme Precipitation Indices in Iran: 1951–2007 |
| title_fullStr | Trends in Extreme Precipitation Indices in Iran: 1951–2007 |
| title_full_unstemmed | Trends in Extreme Precipitation Indices in Iran: 1951–2007 |
| title_short | Trends in Extreme Precipitation Indices in Iran: 1951–2007 |
| title_sort | trends in extreme precipitation indices in iran 1951 2007 |
| url | http://dx.doi.org/10.1155/2016/2456809 |
| work_keys_str_mv | AT robertcballing trendsinextremeprecipitationindicesiniran19512007 AT mohammadsadeghkeikhosravikiany trendsinextremeprecipitationindicesiniran19512007 AT shourasenisenroy trendsinextremeprecipitationindicesiniran19512007 AT javadkhoshhal trendsinextremeprecipitationindicesiniran19512007 |