Analyzing the spatial variability of precipitation extremes along longitude and latitude, northwest Iran
Precipitation extremes can have significant impacts on the environment and human activities. The simple precipitation intensity index is one of the most commonly used extreme indices, which can represent the extreme precipitation characteristics in the desired time period. The main objective of thi...
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| Format: | Article |
| Language: | English |
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Elsevier
2018-01-01
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| Series: | Kuwait Journal of Science |
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| Online Access: | https://journalskuwait.org/kjs/index.php/KJS/article/view/3111 |
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| author | Mohammad Arab Amiri Mohammad Saadi Mesgari |
| author_facet | Mohammad Arab Amiri Mohammad Saadi Mesgari |
| author_sort | Mohammad Arab Amiri |
| collection | DOAJ |
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Precipitation extremes can have significant impacts on the environment and human activities. The simple precipitation intensity index is one of the most commonly used extreme indices, which can represent the extreme precipitation characteristics in the desired time period. The main objective of this research is to realize a spatial analysis of precipitation extremes in
northwest of Iran to investigate spatial trends along longitude and latitude in decadal time scale. Geo-referenced time series from 22 synoptic stations between the years 1991 and 2010 were used. Polynomial fit functions were used for analyzing the spatial variability of extreme precipitation. Besides, the significance of each individual trend surface model order was tested
against the F ratio in order to select the most proper polynomial order for each period. The analyses of extreme precipitation identified significant spatial trends to the intercardinal directions, especially to the southwest. The results of the analysis of the magnitude of changes also showed increasing trends over the whole period.
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| format | Article |
| id | doaj-art-dbdc96a03e484ddc8a3fb94cfd30c6a6 |
| institution | OA Journals |
| issn | 2307-4108 2307-4116 |
| language | English |
| publishDate | 2018-01-01 |
| publisher | Elsevier |
| record_format | Article |
| series | Kuwait Journal of Science |
| spelling | doaj-art-dbdc96a03e484ddc8a3fb94cfd30c6a62025-08-20T02:03:38ZengElsevierKuwait Journal of Science2307-41082307-41162018-01-01451Analyzing the spatial variability of precipitation extremes along longitude and latitude, northwest IranMohammad Arab Amiri0Mohammad Saadi Mesgari1Department of Geographic Information System, Faculty of Geodesy and Geomatics Engineering, K.N.Toosi University of Technology, Tehran, IranDepartment of Geographic Information System, Faculty of Geodesy and Geomatics Engineering and Center of Excellence in Geospatial Information Technology (CEGIT), K.N.Toosi University of Technology, Tehran, Iran Precipitation extremes can have significant impacts on the environment and human activities. The simple precipitation intensity index is one of the most commonly used extreme indices, which can represent the extreme precipitation characteristics in the desired time period. The main objective of this research is to realize a spatial analysis of precipitation extremes in northwest of Iran to investigate spatial trends along longitude and latitude in decadal time scale. Geo-referenced time series from 22 synoptic stations between the years 1991 and 2010 were used. Polynomial fit functions were used for analyzing the spatial variability of extreme precipitation. Besides, the significance of each individual trend surface model order was tested against the F ratio in order to select the most proper polynomial order for each period. The analyses of extreme precipitation identified significant spatial trends to the intercardinal directions, especially to the southwest. The results of the analysis of the magnitude of changes also showed increasing trends over the whole period. https://journalskuwait.org/kjs/index.php/KJS/article/view/3111Geo-referenced time seriesGISSimple precipitation intensity indexWeather extremesSurface approximation |
| spellingShingle | Mohammad Arab Amiri Mohammad Saadi Mesgari Analyzing the spatial variability of precipitation extremes along longitude and latitude, northwest Iran Kuwait Journal of Science Geo-referenced time series GIS Simple precipitation intensity index Weather extremes Surface approximation |
| title | Analyzing the spatial variability of precipitation extremes along longitude and latitude, northwest Iran |
| title_full | Analyzing the spatial variability of precipitation extremes along longitude and latitude, northwest Iran |
| title_fullStr | Analyzing the spatial variability of precipitation extremes along longitude and latitude, northwest Iran |
| title_full_unstemmed | Analyzing the spatial variability of precipitation extremes along longitude and latitude, northwest Iran |
| title_short | Analyzing the spatial variability of precipitation extremes along longitude and latitude, northwest Iran |
| title_sort | analyzing the spatial variability of precipitation extremes along longitude and latitude northwest iran |
| topic | Geo-referenced time series GIS Simple precipitation intensity index Weather extremes Surface approximation |
| url | https://journalskuwait.org/kjs/index.php/KJS/article/view/3111 |
| work_keys_str_mv | AT mohammadarabamiri analyzingthespatialvariabilityofprecipitationextremesalonglongitudeandlatitudenorthwestiran AT mohammadsaadimesgari analyzingthespatialvariabilityofprecipitationextremesalonglongitudeandlatitudenorthwestiran |