Evaluation of PERSIANN-CCS-CDR, ERA5, and SM2RAIN-ASCAT rainfall products for rainfall and drought assessment in a semi-arid watershed, Morocco
Satellite-based precipitation products, with simultaneously high spatial and temporal resolutions, are mostly needed to assess climate change repercussions. Previous research used datasets neglecting either good temporal or good spatial resolution, PERSIANN-CCSCDR, ERA5, and SM2RAIN-ASCAT are some o...
| Main Authors: | , , , , , , |
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| Format: | Article |
| Language: | English |
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IWA Publishing
2023-05-01
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| Series: | Journal of Water and Climate Change |
| Subjects: | |
| Online Access: | http://jwcc.iwaponline.com/content/14/5/1569 |
| _version_ | 1797202834864734208 |
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| author | Adam Najmi Brahim Igmoullan Mustapha Namous Imane El Bouazzaoui Yassine Ait Brahim El Mahdi El Khalki Mohamed El Mehdi Saidi |
| author_facet | Adam Najmi Brahim Igmoullan Mustapha Namous Imane El Bouazzaoui Yassine Ait Brahim El Mahdi El Khalki Mohamed El Mehdi Saidi |
| author_sort | Adam Najmi |
| collection | DOAJ |
| description | Satellite-based precipitation products, with simultaneously high spatial and temporal resolutions, are mostly needed to assess climate change repercussions. Previous research used datasets neglecting either good temporal or good spatial resolution, PERSIANN-CCSCDR, ERA5, and SM2RAIN-ASCAT are some of the projects aiming to remedy these limitations. This study's goal is to evaluate the accuracy of the PERSIANN-CCS-CDR, ERA5, and SM2RAIN-ASCAT at a monthly scale and their suitability for drought assessment in a Moroccan semiarid watershed. Several statistical indices were computed, the drought SPI was calculated using PERSIANN-CCS-CDR estimates, ERA5 products, and observed records as an input in the SPI formula using Gamma distribution to simulate drought from 1983 to 2017. The preliminary comparison and evaluation results of PERSIANN-CCS-CDR estimates and ERA5 datasets showed good CC on a basin scale for monthly precipitation, with a slight overestimation of the observed precipitation shown by the PBIAS. The NSE scored 0.41 for PERSIANN-CCS-CDR and 0.72 for ERA5. The results for SM2RAIN-ASCAT showed an overestimation of the observed precipitation data. At the basin scale, the SPI3 correlation coefficients between the PERSIANN-CCS-CDR monthly estimates and observed gauge rainfall data were greater than 0.67, and the RMSE was closer to 0, outperforming ERA5 in the SPI3 evaluation.
HIGHLIGHTS
The use of remotely sensed precipitation data for climatological and hydrological studies.;
Evaluation of one of the rarest evaluated products (PERSIANN-CCS-CDR).;
Recommendation for alternative precipitation datasets for areas lacking precipitation data.; |
| first_indexed | 2024-03-13T07:04:45Z |
| format | Article |
| id | doaj.art-b84c9f65f8b046ceafcc1aa68750853c |
| institution | Directory Open Access Journal |
| issn | 2040-2244 2408-9354 |
| language | English |
| last_indexed | 2024-04-24T08:09:44Z |
| publishDate | 2023-05-01 |
| publisher | IWA Publishing |
| record_format | Article |
| series | Journal of Water and Climate Change |
| spelling | doaj.art-b84c9f65f8b046ceafcc1aa68750853c2024-04-17T08:29:43ZengIWA PublishingJournal of Water and Climate Change2040-22442408-93542023-05-011451569158410.2166/wcc.2023.461461Evaluation of PERSIANN-CCS-CDR, ERA5, and SM2RAIN-ASCAT rainfall products for rainfall and drought assessment in a semi-arid watershed, MoroccoAdam Najmi0Brahim Igmoullan1Mustapha Namous2Imane El Bouazzaoui3Yassine Ait Brahim4El Mahdi El Khalki5Mohamed El Mehdi Saidi6 Laboratory of Georesources, Geo-Environments, and Civil Engineering, Cadi Ayyad University, Marrakech 40000, Morocco Laboratory of Georesources, Geo-Environments, and Civil Engineering, Cadi Ayyad University, Marrakech 40000, Morocco Data Science for Sustainable Earth Laboratory (Data4Earth), Sultan Moulay Slimane University, Beni Mellal 23000, Morocco Laboratory of Sciences Applied to the Environment and Sustainable Development, Cadi Ayyad University, Essaouira 20000, Morocco International Water Research Institute, Mohammed VI Polytechnic University, Ben Guerir 43150, Morocco International Water Research Institute, Mohammed VI Polytechnic University, Ben Guerir 43150, Morocco Laboratory of Georesources, Geo-Environments, and Civil Engineering, Cadi Ayyad University, Marrakech 40000, Morocco Satellite-based precipitation products, with simultaneously high spatial and temporal resolutions, are mostly needed to assess climate change repercussions. Previous research used datasets neglecting either good temporal or good spatial resolution, PERSIANN-CCSCDR, ERA5, and SM2RAIN-ASCAT are some of the projects aiming to remedy these limitations. This study's goal is to evaluate the accuracy of the PERSIANN-CCS-CDR, ERA5, and SM2RAIN-ASCAT at a monthly scale and their suitability for drought assessment in a Moroccan semiarid watershed. Several statistical indices were computed, the drought SPI was calculated using PERSIANN-CCS-CDR estimates, ERA5 products, and observed records as an input in the SPI formula using Gamma distribution to simulate drought from 1983 to 2017. The preliminary comparison and evaluation results of PERSIANN-CCS-CDR estimates and ERA5 datasets showed good CC on a basin scale for monthly precipitation, with a slight overestimation of the observed precipitation shown by the PBIAS. The NSE scored 0.41 for PERSIANN-CCS-CDR and 0.72 for ERA5. The results for SM2RAIN-ASCAT showed an overestimation of the observed precipitation data. At the basin scale, the SPI3 correlation coefficients between the PERSIANN-CCS-CDR monthly estimates and observed gauge rainfall data were greater than 0.67, and the RMSE was closer to 0, outperforming ERA5 in the SPI3 evaluation. HIGHLIGHTS The use of remotely sensed precipitation data for climatological and hydrological studies.; Evaluation of one of the rarest evaluated products (PERSIANN-CCS-CDR).; Recommendation for alternative precipitation datasets for areas lacking precipitation data.;http://jwcc.iwaponline.com/content/14/5/1569drought assessmentera5persiann-ccs-cdrsm2rain-ascatspi3 |
| spellingShingle | Adam Najmi Brahim Igmoullan Mustapha Namous Imane El Bouazzaoui Yassine Ait Brahim El Mahdi El Khalki Mohamed El Mehdi Saidi Evaluation of PERSIANN-CCS-CDR, ERA5, and SM2RAIN-ASCAT rainfall products for rainfall and drought assessment in a semi-arid watershed, Morocco Journal of Water and Climate Change drought assessment era5 persiann-ccs-cdr sm2rain-ascat spi3 |
| title | Evaluation of PERSIANN-CCS-CDR, ERA5, and SM2RAIN-ASCAT rainfall products for rainfall and drought assessment in a semi-arid watershed, Morocco |
| title_full | Evaluation of PERSIANN-CCS-CDR, ERA5, and SM2RAIN-ASCAT rainfall products for rainfall and drought assessment in a semi-arid watershed, Morocco |
| title_fullStr | Evaluation of PERSIANN-CCS-CDR, ERA5, and SM2RAIN-ASCAT rainfall products for rainfall and drought assessment in a semi-arid watershed, Morocco |
| title_full_unstemmed | Evaluation of PERSIANN-CCS-CDR, ERA5, and SM2RAIN-ASCAT rainfall products for rainfall and drought assessment in a semi-arid watershed, Morocco |
| title_short | Evaluation of PERSIANN-CCS-CDR, ERA5, and SM2RAIN-ASCAT rainfall products for rainfall and drought assessment in a semi-arid watershed, Morocco |
| title_sort | evaluation of persiann ccs cdr era5 and sm2rain ascat rainfall products for rainfall and drought assessment in a semi arid watershed morocco |
| topic | drought assessment era5 persiann-ccs-cdr sm2rain-ascat spi3 |
| url | http://jwcc.iwaponline.com/content/14/5/1569 |
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