Comparative Analysis of Drought Indices for Drought Zone Scheme of Northern Khorasan Province of Iran
Drought is one of the natural disasters which deeply influenced agricultural production. Drought monitoring programs could help to forecast and mitigate the impacts of drought. In this study occurrence, severity, and duration of drought were evaluated by monthly rainfall data (1986-2005) that were r...
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| Format: | Article |
| Language: | English |
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Society of Land Measurements and Cadastre from Transylvania (SMTCT)
2011-08-01
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| Series: | Notulae Scientia Biologicae |
| Online Access: | http://www.notulaebiologicae.ro/index.php/nsb/article/view/6170 |
| _version_ | 1818014806733488128 |
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| author | Ehsan EYSHI REZAEI Azade MOHAMMADIAN Mansoreh KOOHI Mohammad BANNAYAN |
| author_facet | Ehsan EYSHI REZAEI Azade MOHAMMADIAN Mansoreh KOOHI Mohammad BANNAYAN |
| author_sort | Ehsan EYSHI REZAEI |
| collection | DOAJ |
| description | Drought is one of the natural disasters which deeply influenced agricultural production. Drought monitoring programs could help to forecast and mitigate the impacts of drought. In this study occurrence, severity, and duration of drought were evaluated by monthly rainfall data (1986-2005) that were recorded at all meteorological stations in north Khorasan province of Iran. Drought indices include Standard Rainfall Index (SPI), Decades Index (DI) and Percent of Normal (PNI) calculated and compared to determine drought severity, duration and drought occurrence for all stations. In addition, drought maps were prepared by Inverse Distance Weighted (IDW) method, for each study zone. Based on these indices, the most extensive drought occurred in 1989, 1990, 1995, 1996, 2000, and 2001 years. The longest duration of drought based on SPI happened in 1994 and 1997 years. Furthermore, the extreme drought occurred in 1990 and 2001 in all stations. In conclusion, Central part of this province was more exposed to extreme drought during study period than other parts of this region. |
| first_indexed | 2024-04-14T06:49:00Z |
| format | Article |
| id | doaj.art-ed8e426f15a940ca97ec59e2f993abb0 |
| institution | Directory Open Access Journal |
| issn | 2067-3205 2067-3264 |
| language | English |
| last_indexed | 2024-04-14T06:49:00Z |
| publishDate | 2011-08-01 |
| publisher | Society of Land Measurements and Cadastre from Transylvania (SMTCT) |
| record_format | Article |
| series | Notulae Scientia Biologicae |
| spelling | doaj.art-ed8e426f15a940ca97ec59e2f993abb02022-12-22T02:07:05ZengSociety of Land Measurements and Cadastre from Transylvania (SMTCT)Notulae Scientia Biologicae2067-32052067-32642011-08-0133626910.15835/nsb3361706038Comparative Analysis of Drought Indices for Drought Zone Scheme of Northern Khorasan Province of IranEhsan EYSHI REZAEI0Azade MOHAMMADIAN1Mansoreh KOOHI2Mohammad BANNAYAN3Ferdowsi University of MashhadClimatological Research Institute of MashhadClimatological Research Institute of MashhadFerdowsi University of MashhadDrought is one of the natural disasters which deeply influenced agricultural production. Drought monitoring programs could help to forecast and mitigate the impacts of drought. In this study occurrence, severity, and duration of drought were evaluated by monthly rainfall data (1986-2005) that were recorded at all meteorological stations in north Khorasan province of Iran. Drought indices include Standard Rainfall Index (SPI), Decades Index (DI) and Percent of Normal (PNI) calculated and compared to determine drought severity, duration and drought occurrence for all stations. In addition, drought maps were prepared by Inverse Distance Weighted (IDW) method, for each study zone. Based on these indices, the most extensive drought occurred in 1989, 1990, 1995, 1996, 2000, and 2001 years. The longest duration of drought based on SPI happened in 1994 and 1997 years. Furthermore, the extreme drought occurred in 1990 and 2001 in all stations. In conclusion, Central part of this province was more exposed to extreme drought during study period than other parts of this region.http://www.notulaebiologicae.ro/index.php/nsb/article/view/6170 |
| spellingShingle | Ehsan EYSHI REZAEI Azade MOHAMMADIAN Mansoreh KOOHI Mohammad BANNAYAN Comparative Analysis of Drought Indices for Drought Zone Scheme of Northern Khorasan Province of Iran Notulae Scientia Biologicae |
| title | Comparative Analysis of Drought Indices for Drought Zone Scheme of Northern Khorasan Province of Iran |
| title_full | Comparative Analysis of Drought Indices for Drought Zone Scheme of Northern Khorasan Province of Iran |
| title_fullStr | Comparative Analysis of Drought Indices for Drought Zone Scheme of Northern Khorasan Province of Iran |
| title_full_unstemmed | Comparative Analysis of Drought Indices for Drought Zone Scheme of Northern Khorasan Province of Iran |
| title_short | Comparative Analysis of Drought Indices for Drought Zone Scheme of Northern Khorasan Province of Iran |
| title_sort | comparative analysis of drought indices for drought zone scheme of northern khorasan province of iran |
| url | http://www.notulaebiologicae.ro/index.php/nsb/article/view/6170 |
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