Assessment of five global gridded precipitation estimates over a southern Mediterranean basin (Tensift, Morocco)
Gridded Precipitation Products (GPPs) could exhibit discrepancies related to detecting precipitation amounts and patterns. This paper aims to evaluate the accuracy of five GPPs currently in operational production over the Tensift basin in the southern Mediterranean. The GPPs are reanalysis-based (ER...
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Taylor & Francis Group
2025-12-01
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| Series: | Geomatics, Natural Hazards & Risk |
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| Online Access: | https://www.tandfonline.com/doi/10.1080/19475705.2025.2468850 |
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| author | Kaoutar Oukaddour Younes Fakir Michel Le Page |
| author_facet | Kaoutar Oukaddour Younes Fakir Michel Le Page |
| author_sort | Kaoutar Oukaddour |
| collection | DOAJ |
| description | Gridded Precipitation Products (GPPs) could exhibit discrepancies related to detecting precipitation amounts and patterns. This paper aims to evaluate the accuracy of five GPPs currently in operational production over the Tensift basin in the southern Mediterranean. The GPPs are reanalysis-based (ERA5, ERA5-Land, MERRA-2) and multi-source data fusion (TerraClimate, MSWEPv2.8). Their annual and monthly precipitation are compared to observations from fourteen ground gauges over the entire period from 1980 to 2021 and each decade of this period. A set of statistical metrics, such as the Kling Gupta Efficiency (KGE) and the Root Mean Square Error (RMSE), as well as the Bias, served to carry out the evaluation. Four main findings could be highlighted: (i) GPPs have, in general, a good correlation with gauge data; hence they could be used to study the temporal variability of the observed annual and monthly precipitation. (ii) ERA5-Land does not bring significant improvements in precipitation estimates apart from its finer spatial resolution. (iii) GPPs perform better in the plain than in the mountains. (iv) TerraClimate and MSWEPv2.8 present better consistency across the decades. ERA5 and TerraClimate, the longest data series, were used to visualize the precipitation trends in the basin. |
| format | Article |
| id | doaj-art-c9b30a96e0da4f51a6c6a6ffcd7403bd |
| institution | Kabale University |
| issn | 1947-5705 1947-5713 |
| language | English |
| publishDate | 2025-12-01 |
| publisher | Taylor & Francis Group |
| record_format | Article |
| series | Geomatics, Natural Hazards & Risk |
| spelling | doaj-art-c9b30a96e0da4f51a6c6a6ffcd7403bd2025-08-20T03:48:11ZengTaylor & Francis GroupGeomatics, Natural Hazards & Risk1947-57051947-57132025-12-0116110.1080/19475705.2025.2468850Assessment of five global gridded precipitation estimates over a southern Mediterranean basin (Tensift, Morocco)Kaoutar Oukaddour0Younes Fakir1Michel Le Page2GEOSCIENCES Laboratory, Faculty of Sciences Semlalia, Cadi Ayyad University, Marrakech, MoroccoGEOSCIENCES Laboratory, Faculty of Sciences Semlalia, Cadi Ayyad University, Marrakech, MoroccoCentre d’Etudes Spatiales de la Biosphère (CESBIO), Université de Toulouse, CNES/CNRS/INRAE/IRD/UPS, Toulouse, FranceGridded Precipitation Products (GPPs) could exhibit discrepancies related to detecting precipitation amounts and patterns. This paper aims to evaluate the accuracy of five GPPs currently in operational production over the Tensift basin in the southern Mediterranean. The GPPs are reanalysis-based (ERA5, ERA5-Land, MERRA-2) and multi-source data fusion (TerraClimate, MSWEPv2.8). Their annual and monthly precipitation are compared to observations from fourteen ground gauges over the entire period from 1980 to 2021 and each decade of this period. A set of statistical metrics, such as the Kling Gupta Efficiency (KGE) and the Root Mean Square Error (RMSE), as well as the Bias, served to carry out the evaluation. Four main findings could be highlighted: (i) GPPs have, in general, a good correlation with gauge data; hence they could be used to study the temporal variability of the observed annual and monthly precipitation. (ii) ERA5-Land does not bring significant improvements in precipitation estimates apart from its finer spatial resolution. (iii) GPPs perform better in the plain than in the mountains. (iv) TerraClimate and MSWEPv2.8 present better consistency across the decades. ERA5 and TerraClimate, the longest data series, were used to visualize the precipitation trends in the basin.https://www.tandfonline.com/doi/10.1080/19475705.2025.2468850Global precipitation estimatesTerraClimateERA5ERA5-LandMERRA-2MSWEPv2.8 |
| spellingShingle | Kaoutar Oukaddour Younes Fakir Michel Le Page Assessment of five global gridded precipitation estimates over a southern Mediterranean basin (Tensift, Morocco) Geomatics, Natural Hazards & Risk Global precipitation estimates TerraClimate ERA5 ERA5-Land MERRA-2 MSWEPv2.8 |
| title | Assessment of five global gridded precipitation estimates over a southern Mediterranean basin (Tensift, Morocco) |
| title_full | Assessment of five global gridded precipitation estimates over a southern Mediterranean basin (Tensift, Morocco) |
| title_fullStr | Assessment of five global gridded precipitation estimates over a southern Mediterranean basin (Tensift, Morocco) |
| title_full_unstemmed | Assessment of five global gridded precipitation estimates over a southern Mediterranean basin (Tensift, Morocco) |
| title_short | Assessment of five global gridded precipitation estimates over a southern Mediterranean basin (Tensift, Morocco) |
| title_sort | assessment of five global gridded precipitation estimates over a southern mediterranean basin tensift morocco |
| topic | Global precipitation estimates TerraClimate ERA5 ERA5-Land MERRA-2 MSWEPv2.8 |
| url | https://www.tandfonline.com/doi/10.1080/19475705.2025.2468850 |
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