Historical simulations of temperature and precipitation from the CORDEX Africa model in the Wabi Shebele Basin
Rising global temperatures and shifting precipitation patterns have significant socio-economic consequences if not properly studied and predicted. Regional climate models (RCMs) are utilized to assess local-scale climate change. However, the reliability of individual models must be validated due to...
Saved in:
| Main Authors: | , , |
|---|---|
| Format: | Article |
| Language: | English |
| Published: |
IOP Publishing
2023-01-01
|
| Series: | Environmental Research: Climate |
| Subjects: | |
| Online Access: | https://doi.org/10.1088/2752-5295/ad0f9d |
| Tags: |
Add Tag
No Tags, Be the first to tag this record!
|
| _version_ | 1832584506916208640 |
|---|---|
| author | Sisay Guta Alemu Chala Hailu Sime Tamene Adugna Demissie |
| author_facet | Sisay Guta Alemu Chala Hailu Sime Tamene Adugna Demissie |
| author_sort | Sisay Guta Alemu |
| collection | DOAJ |
| description | Rising global temperatures and shifting precipitation patterns have significant socio-economic consequences if not properly studied and predicted. Regional climate models (RCMs) are utilized to assess local-scale climate change. However, the reliability of individual models must be validated due to inherent limitations and methodological constraints. This study evaluates the performance of CORDEX Africa RCMs using observed rainfall and air temperature data from 1986 to 2005. Model performance was evaluated using statistical indicators such as bias, RMSE, r , MAE, and a concise plot of the statistical indicators which is Taylor’s diagram. In rainfall simulation, the RACMO22T performed admirably in the upper parts of the basin (region of high rainfall and cold temperature) and lower regions of the basin (region of low rainfall and hot temperature) with bias −8.64% and 6.19% respectively. HIRHAM5 and CCLM4-8 simulate well the maximum temperature in the upper parts with biases of (0.14 °C and −0.14 °C respectively), whereas RCA4 is well performed in the lower parts of the basin. CCLM4-8 is good for minimum temperature simulation in the upper parts, but HIRHAM5 and RCA4 are good in the lower parts of the basin. In rainfall simulation, all models are slightly good in dry months than in wet. All models underestimated the maximum temperature and overestimated the minimum temperature in the study area as compared to the observed. |
| format | Article |
| id | doaj-art-2a762b18e3484b42b405aaba34e3b36c |
| institution | Kabale University |
| issn | 2752-5295 |
| language | English |
| publishDate | 2023-01-01 |
| publisher | IOP Publishing |
| record_format | Article |
| series | Environmental Research: Climate |
| spelling | doaj-art-2a762b18e3484b42b405aaba34e3b36c2025-01-27T13:15:14ZengIOP PublishingEnvironmental Research: Climate2752-52952023-01-013101500210.1088/2752-5295/ad0f9dHistorical simulations of temperature and precipitation from the CORDEX Africa model in the Wabi Shebele BasinSisay Guta Alemu0https://orcid.org/0000-0003-2785-6266Chala Hailu Sime1https://orcid.org/0000-0002-9453-4534Tamene Adugna Demissie2Ethiopian Construction Design and Supervision Works Corporation (ECDSWC) , Addis Ababa, 2561, Ethiopia; Faculty of Civil and Environmental Engineering, Jimma University , Jimma 378, EthiopiaFaculty of Civil and Environmental Engineering, Jimma University , Jimma 378, EthiopiaFaculty of Civil and Environmental Engineering, Jimma University , Jimma 378, EthiopiaRising global temperatures and shifting precipitation patterns have significant socio-economic consequences if not properly studied and predicted. Regional climate models (RCMs) are utilized to assess local-scale climate change. However, the reliability of individual models must be validated due to inherent limitations and methodological constraints. This study evaluates the performance of CORDEX Africa RCMs using observed rainfall and air temperature data from 1986 to 2005. Model performance was evaluated using statistical indicators such as bias, RMSE, r , MAE, and a concise plot of the statistical indicators which is Taylor’s diagram. In rainfall simulation, the RACMO22T performed admirably in the upper parts of the basin (region of high rainfall and cold temperature) and lower regions of the basin (region of low rainfall and hot temperature) with bias −8.64% and 6.19% respectively. HIRHAM5 and CCLM4-8 simulate well the maximum temperature in the upper parts with biases of (0.14 °C and −0.14 °C respectively), whereas RCA4 is well performed in the lower parts of the basin. CCLM4-8 is good for minimum temperature simulation in the upper parts, but HIRHAM5 and RCA4 are good in the lower parts of the basin. In rainfall simulation, all models are slightly good in dry months than in wet. All models underestimated the maximum temperature and overestimated the minimum temperature in the study area as compared to the observed.https://doi.org/10.1088/2752-5295/ad0f9dclimate changeCORDEXrainfalltemperatureWabi Shebele |
| spellingShingle | Sisay Guta Alemu Chala Hailu Sime Tamene Adugna Demissie Historical simulations of temperature and precipitation from the CORDEX Africa model in the Wabi Shebele Basin Environmental Research: Climate climate change CORDEX rainfall temperature Wabi Shebele |
| title | Historical simulations of temperature and precipitation from the CORDEX Africa model in the Wabi Shebele Basin |
| title_full | Historical simulations of temperature and precipitation from the CORDEX Africa model in the Wabi Shebele Basin |
| title_fullStr | Historical simulations of temperature and precipitation from the CORDEX Africa model in the Wabi Shebele Basin |
| title_full_unstemmed | Historical simulations of temperature and precipitation from the CORDEX Africa model in the Wabi Shebele Basin |
| title_short | Historical simulations of temperature and precipitation from the CORDEX Africa model in the Wabi Shebele Basin |
| title_sort | historical simulations of temperature and precipitation from the cordex africa model in the wabi shebele basin |
| topic | climate change CORDEX rainfall temperature Wabi Shebele |
| url | https://doi.org/10.1088/2752-5295/ad0f9d |
| work_keys_str_mv | AT sisaygutaalemu historicalsimulationsoftemperatureandprecipitationfromthecordexafricamodelinthewabishebelebasin AT chalahailusime historicalsimulationsoftemperatureandprecipitationfromthecordexafricamodelinthewabishebelebasin AT tameneadugnademissie historicalsimulationsoftemperatureandprecipitationfromthecordexafricamodelinthewabishebelebasin |