Evaluating the Performance of PERSIANN and PERSIANN-CDR Satellite Products in Precipitation Estimation in Semi-Arid Region of Zagros
Rainfall is one of the most important environmental factors affecting the density and canopy cover percentage of plant species, erosion, and natural hazard status and its measurement is important for achieving appropriate water management. Satellite products have been introduced as an alternative me...
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| Format: | Article |
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Iranian Scientific Association of Desert Management and Control (ISADMC)
2020-02-01
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| Series: | مدیریت بیابان |
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| Online Access: | http://www.jdmal.ir/article_38472_84db47e91115deb70e2c22889a68897c.pdf |
| _version_ | 1811161569614102528 |
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| author | Leila Ghorbani Reza Jafari Hossein Bashari |
| author_facet | Leila Ghorbani Reza Jafari Hossein Bashari |
| author_sort | Leila Ghorbani |
| collection | DOAJ |
| description | Rainfall is one of the most important environmental factors affecting the density and canopy cover percentage of plant species, erosion, and natural hazard status and its measurement is important for achieving appropriate water management. Satellite products have been introduced as an alternative method for ground-based measurements due to inaccessibility of some areas such as arid, semi-arid and mountainous areas and lack of temporal and spatial rainfall data. This study aimed to investigate the efficiency of PERSIANN and PERSIANN-CDR satellite products to measure monthly and annual rainfall in Chaharmahal and Bakhtiari province in time span of 2010 and 2016, using correlation coefficient, root means square error and relative bias. Results showed that PERSIANN-CDR yielded the highest correlation coefficient, lowest RMSE and lowest relative bias in both monthly and annual scales. Estimations of rainfall by both PERSIANN and PERSIANN-CDR products were more accurate in monthly scale compared to annual scale. The correlation coefficient of PERSIANN monthly and annual rainfall respectively were 0.833 and 0.465. These correlations for PERSIANN-CDR were 0.877 and 0.641, and statistically significant for monthly and annual rainfall data, respectively. Due to limited numbers of rainfall gauges and inappropriate distribution and their importance in watershed runoff studies, drought and vegetation studies, and using satellite rainfall products with high spatial and temporal coverage can be considered as a suitable data source in climate studies, especially in arid and semi-arid regions of Iran. |
| first_indexed | 2024-04-10T06:16:32Z |
| format | Article |
| id | doaj.art-b1bfdb066ee44600b0c72120ffe1fb0b |
| institution | Directory Open Access Journal |
| issn | 2476-3985 2476-3721 |
| language | fas |
| last_indexed | 2024-04-10T06:16:32Z |
| publishDate | 2020-02-01 |
| publisher | Iranian Scientific Association of Desert Management and Control (ISADMC) |
| record_format | Article |
| series | مدیریت بیابان |
| spelling | doaj.art-b1bfdb066ee44600b0c72120ffe1fb0b2023-03-02T06:49:26ZfasIranian Scientific Association of Desert Management and Control (ISADMC)مدیریت بیابان2476-39852476-37212020-02-01714152810.22034/jdmal.2020.3847238472Evaluating the Performance of PERSIANN and PERSIANN-CDR Satellite Products in Precipitation Estimation in Semi-Arid Region of ZagrosLeila Ghorbani0Reza Jafari1Hossein Bashari2M.Sc. Graduated, Rangeland Management, Isfahan University of Technology, Isfahan, IranAssociate Professor of Department of Natural Resources, Isfahan university of TechnologyAssistant Professor, Faculty of Natural Resources, Isfahan University of Technology, Isfahan, IranRainfall is one of the most important environmental factors affecting the density and canopy cover percentage of plant species, erosion, and natural hazard status and its measurement is important for achieving appropriate water management. Satellite products have been introduced as an alternative method for ground-based measurements due to inaccessibility of some areas such as arid, semi-arid and mountainous areas and lack of temporal and spatial rainfall data. This study aimed to investigate the efficiency of PERSIANN and PERSIANN-CDR satellite products to measure monthly and annual rainfall in Chaharmahal and Bakhtiari province in time span of 2010 and 2016, using correlation coefficient, root means square error and relative bias. Results showed that PERSIANN-CDR yielded the highest correlation coefficient, lowest RMSE and lowest relative bias in both monthly and annual scales. Estimations of rainfall by both PERSIANN and PERSIANN-CDR products were more accurate in monthly scale compared to annual scale. The correlation coefficient of PERSIANN monthly and annual rainfall respectively were 0.833 and 0.465. These correlations for PERSIANN-CDR were 0.877 and 0.641, and statistically significant for monthly and annual rainfall data, respectively. Due to limited numbers of rainfall gauges and inappropriate distribution and their importance in watershed runoff studies, drought and vegetation studies, and using satellite rainfall products with high spatial and temporal coverage can be considered as a suitable data source in climate studies, especially in arid and semi-arid regions of Iran.http://www.jdmal.ir/article_38472_84db47e91115deb70e2c22889a68897c.pdfsatellite rainfall productscorrelation coefficientroot mean square errorrelative bias |
| spellingShingle | Leila Ghorbani Reza Jafari Hossein Bashari Evaluating the Performance of PERSIANN and PERSIANN-CDR Satellite Products in Precipitation Estimation in Semi-Arid Region of Zagros مدیریت بیابان satellite rainfall products correlation coefficient root mean square error relative bias |
| title | Evaluating the Performance of PERSIANN and PERSIANN-CDR Satellite Products in Precipitation Estimation in Semi-Arid Region of Zagros |
| title_full | Evaluating the Performance of PERSIANN and PERSIANN-CDR Satellite Products in Precipitation Estimation in Semi-Arid Region of Zagros |
| title_fullStr | Evaluating the Performance of PERSIANN and PERSIANN-CDR Satellite Products in Precipitation Estimation in Semi-Arid Region of Zagros |
| title_full_unstemmed | Evaluating the Performance of PERSIANN and PERSIANN-CDR Satellite Products in Precipitation Estimation in Semi-Arid Region of Zagros |
| title_short | Evaluating the Performance of PERSIANN and PERSIANN-CDR Satellite Products in Precipitation Estimation in Semi-Arid Region of Zagros |
| title_sort | evaluating the performance of persiann and persiann cdr satellite products in precipitation estimation in semi arid region of zagros |
| topic | satellite rainfall products correlation coefficient root mean square error relative bias |
| url | http://www.jdmal.ir/article_38472_84db47e91115deb70e2c22889a68897c.pdf |
| work_keys_str_mv | AT leilaghorbani evaluatingtheperformanceofpersiannandpersianncdrsatelliteproductsinprecipitationestimationinsemiaridregionofzagros AT rezajafari evaluatingtheperformanceofpersiannandpersianncdrsatelliteproductsinprecipitationestimationinsemiaridregionofzagros AT hosseinbashari evaluatingtheperformanceofpersiannandpersianncdrsatelliteproductsinprecipitationestimationinsemiaridregionofzagros |