Validation of Monthly Data of Temperature and Precipitation over West Africa from Simulations of CORDEX-CORE Ensemble  

作　　者：Alphonse Um Um Cyrille Meukaleuni Eric Efon Brice Baudouin Sandjeu Wandjie Rinelle Djiondo Ngongang Alain Tchio Tamoffo Carine Betant Andre Lenouo Alphonse Um Um;Cyrille Meukaleuni;Eric Efon;Brice Baudouin Sandjeu Wandjie;Rinelle Djiondo Ngongang;Alain Tchio Tamoffo;Carine Betant;Andre Lenouo(Laboratory of Fundamental Physics, Department of Physics, Faculty of Science, University of Douala, Douala, Cameroon;The University Institute of the Coast, Douala, Cameroun;Department of Physics, Faculty of Science, University of Bamenda, Cameroon;Climate Service Center Germany (GERICS), Helmholtz-Zentrum Hereon, Hamburg, Germany)

机构地区：[1]Laboratory of Fundamental Physics, Department of Physics, Faculty of Science, University of Douala, Douala, Cameroon [2]The University Institute of the Coast, Douala, Cameroun [3]Department of Physics, Faculty of Science, University of Bamenda, Cameroon [4]Climate Service Center Germany (GERICS), Helmholtz-Zentrum Hereon, Hamburg, Germany

出　　处：《Journal of Geoscience and Environment Protection》2025年第1期422-443,共22页地球科学和环境保护期刊(英文)

摘　　要：We analysed nine simulations from dynamic downscaling to a horizontal resolution of approximately 25 km of three general circulation models (GCMs). These GCMs use three regional climate models (RCMs) that participated in the coordinated downscaling experiment (CORDEX-CORE). These simulations were compared to three datasets of reanalysis. The ERA5 for temperature at 2 metres and for precipitation, Climate Hazards Center InfraRed Precipitation with Stations (CHIRPS) and African Rainfall Climatology from the Famine Early Warning System (FEWS-ARC) were used. To give an overview of these nine model experiments, we presented and compared the results of the latter with the reanalysis taken into account for the period 1983 - 2005. The results indicated that the nine models correctly reproduced the temperature and rainfall in West Africa during the historical period. In the Guinean coast region, REMO-NorESM1 and RegCM4-MPI-MR models well simulated precipitation and temperature during the historical period. In the Savannah region, RegCM4-NorESM1, CCLM5-MPI-LR, REMO-NorESM1, CCLM5-NorESM1 and CCLM5-HadGEM2 model gave best result. In the Sahel region, the RegCM4-HadGEM2 model gave a good correlation. Using the Taylor diagram in the historical period, all CORDEX-CORE RCMs had a strong relationship with temperature.We analysed nine simulations from dynamic downscaling to a horizontal resolution of approximately 25 km of three general circulation models (GCMs). These GCMs use three regional climate models (RCMs) that participated in the coordinated downscaling experiment (CORDEX-CORE). These simulations were compared to three datasets of reanalysis. The ERA5 for temperature at 2 metres and for precipitation, Climate Hazards Center InfraRed Precipitation with Stations (CHIRPS) and African Rainfall Climatology from the Famine Early Warning System (FEWS-ARC) were used. To give an overview of these nine model experiments, we presented and compared the results of the latter with the reanalysis taken into account for the period 1983 - 2005. The results indicated that the nine models correctly reproduced the temperature and rainfall in West Africa during the historical period. In the Guinean coast region, REMO-NorESM1 and RegCM4-MPI-MR models well simulated precipitation and temperature during the historical period. In the Savannah region, RegCM4-NorESM1, CCLM5-MPI-LR, REMO-NorESM1, CCLM5-NorESM1 and CCLM5-HadGEM2 model gave best result. In the Sahel region, the RegCM4-HadGEM2 model gave a good correlation. Using the Taylor diagram in the historical period, all CORDEX-CORE RCMs had a strong relationship with temperature.

关 键 词：CORDEX-CORE Regional Climate Model Evaluation ERA5 CHIRPS FEWS-ARC West Africa 

分 类 号：P46[天文地球—大气科学及气象学]