Journal metrics

Journal metrics

  • IF value: 3.769 IF 3.769
  • IF 5-year value: 4.522 IF 5-year 4.522
  • CiteScore value: 4.14 CiteScore 4.14
  • SNIP value: 1.170 SNIP 1.170
  • SJR value: 2.253 SJR 2.253
  • IPP value: 3.86 IPP 3.86
  • h5-index value: 26 h5-index 26
  • Scimago H index value: 22 Scimago H index 22
Discussion papers | Copyright
https://doi.org/10.5194/esd-2018-44
© Author(s) 2018. This work is distributed under
the Creative Commons Attribution 4.0 License.

Research article 25 Jun 2018

Research article | 25 Jun 2018

Review status
This discussion paper is a preprint. It is a manuscript under review for the journal Earth System Dynamics (ESD).

Sensitivity study of the Regional Climate Model RegCM4 to different convective schemes over West Africa

Brahima Koné1, Arona Diedhiou1,2, N'datchoh Evelyne Touré1, Mouhamadou Bamba Sylla3, Filippo Giorgi4, Sandrine Anquetin2, Adama Bamba1, Adama Diawara1, and Arsene Toka Kobea1 Brahima Koné et al.
  • 1LAPAMF, Université Félix Houphouët Boigny, Abidjan, Côte d’Ivoire
  • 2Univ. Grenoble Alpes, IRD, CNRS, Grenoble INP, IGE, F-38000 Grenoble, France
  • 3WASCAL Centre of Competence, Ouagadougou, Burkina Faso
  • 4International Centre for Theoretical Physics (ICTP), Trieste, Italy

Abstract. The latest version of RegCM4 with CLM4.5 as land surface scheme was used to assess the performance and the sensitivity of the simulated West African climate system to different convection schemes. The sensitivity studies were performed over the West Africa domain from November 2002 to December 2004, at spatial resolution of 50km×50km and involved five (5) convective schemes: (i) Emanuel; (ii) Grell; (iii) Emanuel over land and Grell over ocean (Mix1); (iv) Grell over land and Emanuel over ocean (Mix2); and (v) Tiedtke. All simulations were forced with ERA-Interim data. Validation of surface temperature at 2m and precipitation were conducted using respectively data from the Climate Research Unit (CRU) and Global Precipitation Climatology Project (GPCP) during June to September (rainy season). Quantitative assessment of the sensitivity tests were carried out using the mean bias, the pattern correlation coefficient, the root mean square difference, the probability density function of the temperature bias and the Taylor diagram. Results revealed a better performance of the configuration with Emanuel convection scheme to simulate the spatial and temporal variability of the temperature and the precipitation. Therefore, the configuration of RegCM4 with CLM4.5 as land surface model and implementing Emanuel convective scheme is recommended for the study of the West African climate system.

Download & links
Brahima Koné et al.
Interactive discussion
Status: open (until 06 Aug 2018)
Status: open (until 06 Aug 2018)
AC: Author comment | RC: Referee comment | SC: Short comment | EC: Editor comment
[Subscribe to comment alert] Printer-friendly Version - Printer-friendly version Supplement - Supplement
Brahima Koné et al.
Brahima Koné et al.
Viewed
Total article views: 235 (including HTML, PDF, and XML)
HTML PDF XML Total BibTeX EndNote
206 26 3 235 2 3
  • HTML: 206
  • PDF: 26
  • XML: 3
  • Total: 235
  • BibTeX: 2
  • EndNote: 3
Views and downloads (calculated since 25 Jun 2018)
Cumulative views and downloads (calculated since 25 Jun 2018)
Viewed (geographical distribution)
Total article views: 235 (including HTML, PDF, and XML) Thereof 233 with geography defined and 2 with unknown origin.
Country # Views %
  • 1
1
 
 
 
 
Cited
Saved
No saved metrics found.
Discussed
No discussed metrics found.
Latest update: 18 Jul 2018
Publications Copernicus
Download
Short summary
Simulations of regional climate are very sensitive to physical parameterization schemes, particularly over the tropics where convection plays a major role in monsoon dynamics. The latest version of RegCM4 was used to assess the performance and the sensitivity of the simulated West African climate system to different convection schemes. The configuration of RegCM4 with CLM4.5 as land surface model and implementing Emanuel convective scheme is recommended for the study of the West African climate.
Simulations of regional climate are very sensitive to physical parameterization schemes,...
Citation
Share