Spatio-temporal trend and change detection of temperature and precipitation of Kashafroud basin
The study of meteorological characteristics and its variability is important in assessing the climate change impacts for water resources management. Trend analysis of hydrological and meteorological time series is a method for determining the change in climate variables that is performed with differ...
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Kharazmi University
2022-09-01
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| Series: | تحقیقات کاربردی علوم جغرافیایی |
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| Online Access: | http://jgs.khu.ac.ir/article-1-3335-en.pdf |
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| author | Amenh Khosravi Mahmood Azari |
| author_facet | Amenh Khosravi Mahmood Azari |
| author_sort | Amenh Khosravi |
| collection | DOAJ |
| description | The study of meteorological characteristics and its variability is important in assessing the climate change impacts for water resources management. Trend analysis of hydrological and meteorological time series is a method for determining the change in climate variables that is performed with different parametric and non-parametric methods. In this research, the annual, seasonal and monthly trends were analyzed regarding rainfall and temperature time series for 1986-2017 in 28 stations of Kashafroud basin in the Northeast of Iran. For this purpose, the annual, seasonal and monthly trends were evaluated using non-parametric Mann Kendall and Pettitt test at 95% level significance. The results showed the trend for the monthly maximum temperature in spring and winter and also the annual trend for all stations was increasing, whereas the summer and autumn pattern differed. The trend of minimum temperature in all seasons and stations do not have a uniform pattern. The results of precipitation trend indicated that the annual precipitation of the basin had not changed and did not have a significant trend in 5% level of significance. Precipitation of the basin in the winter decreased. There was an increasing trend in the Southern half of the basin in autumn. The noticeable decrease of precipitation in winter season especially during January and February with an increase in November can be a serious challenge for water resource management of basin during the dry season. |
| format | Article |
| id | doaj-art-983de63e57ae4f92b3b9dbb9e7564b60 |
| institution | Kabale University |
| issn | 2228-7736 2588-5138 |
| language | fas |
| publishDate | 2022-09-01 |
| publisher | Kharazmi University |
| record_format | Article |
| series | تحقیقات کاربردی علوم جغرافیایی |
| spelling | doaj-art-983de63e57ae4f92b3b9dbb9e7564b602025-01-31T17:29:28ZfasKharazmi Universityتحقیقات کاربردی علوم جغرافیایی2228-77362588-51382022-09-012266289306Spatio-temporal trend and change detection of temperature and precipitation of Kashafroud basinAmenh Khosravi0Mahmood Azari1 M.A. Student, Ferdowsi University of Mashhad Assistant Professor, Department of Range and Watershed Management, College of Natural Resources and Environment, Ferdowsi University of Mashhad The study of meteorological characteristics and its variability is important in assessing the climate change impacts for water resources management. Trend analysis of hydrological and meteorological time series is a method for determining the change in climate variables that is performed with different parametric and non-parametric methods. In this research, the annual, seasonal and monthly trends were analyzed regarding rainfall and temperature time series for 1986-2017 in 28 stations of Kashafroud basin in the Northeast of Iran. For this purpose, the annual, seasonal and monthly trends were evaluated using non-parametric Mann Kendall and Pettitt test at 95% level significance. The results showed the trend for the monthly maximum temperature in spring and winter and also the annual trend for all stations was increasing, whereas the summer and autumn pattern differed. The trend of minimum temperature in all seasons and stations do not have a uniform pattern. The results of precipitation trend indicated that the annual precipitation of the basin had not changed and did not have a significant trend in 5% level of significance. Precipitation of the basin in the winter decreased. There was an increasing trend in the Southern half of the basin in autumn. The noticeable decrease of precipitation in winter season especially during January and February with an increase in November can be a serious challenge for water resource management of basin during the dry season.http://jgs.khu.ac.ir/article-1-3335-en.pdfclimate variabilitymann kendall testtime seriespettitt testmashhad |
| spellingShingle | Amenh Khosravi Mahmood Azari Spatio-temporal trend and change detection of temperature and precipitation of Kashafroud basin تحقیقات کاربردی علوم جغرافیایی climate variability mann kendall test time series pettitt test mashhad |
| title | Spatio-temporal trend and change detection of temperature and precipitation of Kashafroud basin |
| title_full | Spatio-temporal trend and change detection of temperature and precipitation of Kashafroud basin |
| title_fullStr | Spatio-temporal trend and change detection of temperature and precipitation of Kashafroud basin |
| title_full_unstemmed | Spatio-temporal trend and change detection of temperature and precipitation of Kashafroud basin |
| title_short | Spatio-temporal trend and change detection of temperature and precipitation of Kashafroud basin |
| title_sort | spatio temporal trend and change detection of temperature and precipitation of kashafroud basin |
| topic | climate variability mann kendall test time series pettitt test mashhad |
| url | http://jgs.khu.ac.ir/article-1-3335-en.pdf |
| work_keys_str_mv | AT amenhkhosravi spatiotemporaltrendandchangedetectionoftemperatureandprecipitationofkashafroudbasin AT mahmoodazari spatiotemporaltrendandchangedetectionoftemperatureandprecipitationofkashafroudbasin |