Journal cover Journal topic
Earth System Science Data The Data Publishing Journal
https://doi.org/10.5194/essd-2017-93
© Author(s) 2017. This work is distributed under
the Creative Commons Attribution 4.0 License.
 
22 Sep 2017
Review status
This discussion paper is a preprint. It is a manuscript under review for the journal Earth System Science Data (ESSD).
The WASCAL high-resolution regional climate simulation ensemble for West Africa: concept, dissemination, assessment
Dominikus Heinzeller1, Diarra Dieng1,2, Gerhard Smiatek1, Christiana Olusegun1, Cornelia Klein3, Ilse Hamann4, Seyni Salack5, and Harald Kunstmann1,2 1Karlsruhe Institute of Technology, Institute of Meteorology and Climate Research, Garmisch-Partenkirchen, Germany
2University of Augsburg, Institute of Geography, Augsburg, Germany
3Natural Environment Research Council, Centre for Ecology & Hydrology, Wallingford, United Kingdom
4German Climate Computing Center, Hamburg, Germany
5WASCAL Competence Center, Ouagadougou, Burkina Faso
Abstract. Climate change and constant population growth pose severe challenges to 21st century rural Africa. Within the framework of the West African Science Service Center on Climate Change and Adapted Land Use (WASCAL), an ensemble of high-resolution regional climate change scenarios for the greater West African region are provided to support the development of effective adaptation and mitigation measures. This contribution presents the overall concept of the WASCAL regional climate simulations as well as detailed information on the experiment design, and provides information on the format and dissemination of the available data. All data is made available to the public at the CERA long-term archive of the German Climate Computing Center (DKRZ) with a subset available at the PANGAEA Data Publisher for Earth & Environmental Science portal (https://doi.pangaea.de/10.1594/PANGAEA.880512).

Regional climate projections are generated at high (12 km) and intermediate (60 km) resolution using the Weather Research & Forecasting Model (WRF). The simulations cover the validation period 1980–2010 and the two future periods 2020–2050 and 2070–2100. A brief comparison to observations and two climate change scenarios from the CORDEX initiative is presented to provide guidance on the data set to future users and to assess their climate change signal. Under the RCP4.5 scenario, the results suggest an increase in temperature by 1.5 °C at the Coast of Guinea and by up to 3 °C in the northern Sahel by the end of the 21st century, in line with existing climate projections for the region. They also project an increase in precipitation by up to 300 mm per year along the Coast of Guinea, by up to 150 mm per year in the Soudano region adjacent in the North, and almost no change in precipitation in the Sahel. This stands in contrast to existing regional climate projections, which predict increasingly drier conditions.

The high spatial and temporal resolution of the data, the extensive list of output variables, the large computational domain and the long time periods covered make this data set a unique resource for follow-up analyses and impact modelling studies over the greater West African region. The comprehensive documentation and standardisation of the data facilitate and encourage its use within and outside of the WASCAL community.


Citation: Heinzeller, D., Dieng, D., Smiatek, G., Olusegun, C., Klein, C., Hamann, I., Salack, S., and Kunstmann, H.: The WASCAL high-resolution regional climate simulation ensemble for West Africa: concept, dissemination, assessment, Earth Syst. Sci. Data Discuss., https://doi.org/10.5194/essd-2017-93, in review, 2017.
Dominikus Heinzeller et al.
Dominikus Heinzeller et al.

Data sets

West African Science Service Centre on Climate Change and Adapted Land Use (WASCAL) high-resolution climate simulation data, links to subset of variables at daily and monthly temporal resolution in NetCDF format
Heinzeller, Dominikus; Dieng, Diarra; Smiatek, Gerhard; Olusegun, Christiana F; Klein, Cornelia; Hamann, Ilse; Kunstmann, Harald
https://doi.org/10.1594/PANGAEA.880512
West African Science Service Centre on Climate Change and Adapted Land Use (WASCAL) high-resolution climate simulation data, 12km resolution, forcing ERA-Interim, control run 1979-2014
Heinzeller, Dominikus; Dieng, Diarra; Smiatek, Gerhard; Olusegun, Christiana F; Klein, Cornelia; Hamann, Ilse; Kunstmann, Harald
https://doi.org/10.1594/WDCC/WRF12_ERAINT_CTRL
West African Science Service Centre on Climate Change and Adapted Land Use (WASCAL) high-resolution climate simulation data, 12km resolution, forcing GFDL-ESM2M, historical run 1979-2005
Heinzeller, Dominikus; Dieng, Diarra; Smiatek, Gerhard; Olusegun, Christiana F; Klein, Cornelia; Hamann, Ilse; Kunstmann, Harald
https://doi.org/10.1594/WDCC/WRF12_GFDLESM_HIST
West African Science Service Centre on Climate Change and Adapted Land Use (WASCAL) high-resolution climate simulation data, 12km resolution, forcing GFDL-ESM2M, RCP4.5 run 2006-2100
Heinzeller, Dominikus; Dieng, Diarra; Smiatek, Gerhard; Olusegun, Christiana F; Klein, Cornelia; Hamann, Ilse; Kunstmann, Harald
https://doi.org/10.1594/WDCC/WRF12_GFDLESM_RCP45
West African Science Service Centre on Climate Change and Adapted Land Use (WASCAL) high-resolution climate simulation data, 12km resolution, forcing HadGEM2-ES, historical run 1979-2005
Heinzeller, Dominikus; Dieng, Diarra; Smiatek, Gerhard; Olusegun, Christiana F; Klein, Cornelia; Hamann, Ilse; Kunstmann, Harald
https://doi.org/10.1594/WDCC/WRF12_HADGEM2_HIST
West African Science Service Centre on Climate Change and Adapted Land Use (WASCAL) high-resolution climate simulation data, 12km resolution, forcing HadGEM2-ES, RCP4.5 run 2006-2100
Heinzeller, Dominikus; Dieng, Diarra; Smiatek, Gerhard; Olusegun, Christiana F; Klein, Cornelia; Hamann, Ilse; Kunstmann, Harald
https://doi.org/10.1594/WDCC/WRF12_HADGEM2_RCP45
West African Science Service Centre on Climate Change and Adapted Land Use (WASCAL) high-resolution climate simulation data, 12km resolution, forcing MPI-ESM MR, historical run 1979-2005
Heinzeller, Dominikus; Dieng, Diarra; Smiatek, Gerhard; Olusegun, Christiana F; Klein, Cornelia; Hamann, Ilse; Kunstmann, Harald
https://doi.org/10.1594/WDCC/WRF12_MPIESM_HIST
West African Science Service Centre on Climate Change and Adapted Land Use (WASCAL) high-resolution climate simulation data, 12km resolution, forcing MPI-ESM MR, RCP4.5 run 2006-2100
Heinzeller, Dominikus; Dieng, Diarra; Smiatek, Gerhard; Olusegun, Christiana F; Klein, Cornelia; Hamann, Ilse; Kunstmann, Harald
https://doi.org/10.1594/WDCC/WRF12_MPIESM_RCP45
West African Science Service Centre on Climate Change and Adapted Land Use (WASCAL) high-resolution climate simulation data, 60km resolution, forcing ERA-Interim, control run 1979-2014
Heinzeller, Dominikus; Dieng, Diarra; Smiatek, Gerhard; Olusegun, Christiana F; Klein, Cornelia; Hamann, Ilse; Kunstmann, Harald
https://doi.org/10.1594/WDCC/WRF60_ERAINT_CTRL
West African Science Service Centre on Climate Change and Adapted Land Use (WASCAL) high-resolution climate simulation data, 60km resolution, forcing GFDL-ESM2M, historical run 1979-2005
Heinzeller, Dominikus; Dieng, Diarra; Smiatek, Gerhard; Olusegun, Christiana F; Klein, Cornelia; Hamann, Ilse; Kunstmann, Harald
https://doi.org/10.1594/WDCC/WRF60_GFDLESM_HIST
West African Science Service Centre on Climate Change and Adapted Land Use (WASCAL) high-resolution climate simulation data, 60km resolution, forcing GFDL-ESM2M, RCP4.5 run 2006-2100
Heinzeller, Dominikus; Dieng, Diarra; Smiatek, Gerhard; Olusegun, Christiana F; Klein, Cornelia; Hamann, Ilse; Kunstmann, Harald
https://doi.org/10.1594/WDCC/WRF60_GFDLESM_RCP45
West African Science Service Centre on Climate Change and Adapted Land Use (WASCAL) high-resolution climate simulation data, 60km resolution, forcing HadGEM2-ES, historical run 1979-2005
Heinzeller, Dominikus; Dieng, Diarra; Smiatek, Gerhard; Olusegun, Christiana F; Klein, Cornelia; Hamann, Ilse; Kunstmann, Harald
https://doi.org/10.1594/WDCC/WRF60_HADGEM2_HIST
West African Science Service Centre on Climate Change and Adapted Land Use (WASCAL) high-resolution climate simulation data, 60km resolution, forcing HadGEM2-ES, RCP4.5 run 2006-2100
Heinzeller, Dominikus; Dieng, Diarra; Smiatek, Gerhard; Olusegun, Christiana F; Klein, Cornelia; Hamann, Ilse; Kunstmann, Harald
https://doi.org/10.1594/WDCC/WRF60_HADGEM2_RCP45
West African Science Service Centre on Climate Change and Adapted Land Use (WASCAL) high-resolution climate simulation data, 60km resolution, forcing MPI-ESM MR, historical run 19792005
Heinzeller, Dominikus; Dieng, Diarra; Smiatek, Gerhard; Olusegun, Christiana F; Klein, Cornelia; Hamann, Ilse; Kunstmann, Harald
https://doi.org/10.1594/WDCC/WRF60_MPIESM_HIST
West African Science Service Centre on Climate Change and Adapted Land Use (WASCAL) high-resolution climate simulation data, 60km resolution, forcing MPI-ESM MR, RCP4.5 run 2006-2100
Heinzeller, Dominikus; Dieng, Diarra; Smiatek, Gerhard; Olusegun, Christiana F; Klein, Cornelia; Hamann, Ilse; Kunstmann, Harald
https://doi.org/10.1594/WDCC/WRF60_MPIESM_RCP45
Dominikus Heinzeller et al.

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Short summary
Climate change and population growth pose severe challenges to 21st century rural Africa. Within the framework of the West African Science Service Center on Climate Change and Adapted Land Use (WASCAL), an ensemble of high-resolution regional climate change simulations are provided to support adaptation and mitigation measures. This contribution presents the concept and design of the simulations, and provides information on the format and dissemination of the available data.
Climate change and population growth pose severe challenges to 21st century rural Africa. Within...
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