Meteorology and Atmospheric Physics

, Volume 128, Issue 1, pp 73–95

Sensitivity analysis with the regional climate model COSMO-CLM over the CORDEX-MENA domain

  • E. Bucchignani
  • L. Cattaneo
  • H.-J. Panitz
  • P. Mercogliano
Original Paper

DOI: 10.1007/s00703-015-0403-3

Cite this article as:
Bucchignani, E., Cattaneo, L., Panitz, HJ. et al. Meteorol Atmos Phys (2016) 128: 73. doi:10.1007/s00703-015-0403-3

Abstract

The results of a sensitivity work based on ERA-Interim driven COSMO-CLM simulations over the Middle East-North Africa (CORDEX-MENA) domain are presented. All simulations were performed at 0.44° spatial resolution. The purpose of this study was to ascertain model performances with respect to changes in physical and tuning parameters which are mainly related to surface, convection, radiation and cloud parameterizations. Evaluation was performed for the whole CORDEX-MENA region and six sub-regions, comparing a set of 26 COSMO-CLM runs against a combination of available ground observations, satellite products and reanalysis data to assess temperature, precipitation, cloud cover and mean sea level pressure. The model proved to be very sensitive to changes in physical parameters. The optimized configuration allows COSMO-CLM to improve the simulated main climate features of this area. Its main characteristics consist in the new parameterization of albedo, based on Moderate Resolution Imaging Spectroradiometer data, and the new parameterization of aerosol, based on NASA-GISS AOD distributions. When applying this configuration, Mean Absolute Error values for the considered variables are as follows: about 1.2 °C for temperature, about 15 mm/month for precipitation, about 9 % for total cloud cover, and about 0.6 hPa for mean sea level pressure.

Supplementary material

703_2015_403_MOESM1_ESM.pdf (4.6 mb)
Supplementary material. The following supporting information is available as part of the online article:Fig. S1 The CORDEX-MENA domain (27 W–76E, 7S–45 N) with surface height (m) and the eleven evaluation regions defined in Almazroui (2015). Fig. S2 (a-b) Taylor diagrams of 2-meter temperature (1980–1984) for the eleven subdomains. The CRU dataset is used as a reference field. Fig. S3 (a-b) Monthly time series of 2-meter temperature (°C) (1980–1984) for the eleven subdomains. Fig. S4 (a-b) Taylor diagrams of total precipitation (1980–1984) for the eleven subdomains. The CRU dataset is used as a reference field. Fig. S5 (a-b) Monthly time series of total precipitation (mm/month) (1980–1984) for the eleven subdomains. Fig. S6 (a-b) Monthly time series of total cloud cover (%) (1980–1984) for the eleven subdomains. Fig. S7 (a-b) Monthly time series of mean sea level pressure (hPa) (1980–1984) for the eleven subdomains Supplementary material 1 (PDF 4726 kb)

Copyright information

© Springer-Verlag Wien 2015

Authors and Affiliations

  • E. Bucchignani
    • 1
    • 2
  • L. Cattaneo
    • 1
  • H.-J. Panitz
    • 3
  • P. Mercogliano
    • 1
    • 2
  1. 1.Centro Euro-Mediterraneo sui Cambiamenti Climatici (CMCC)Capua (CE)Italy
  2. 2.Centro Italiano Ricerche Aerospaziali (CIRA)Capua (CE)Italy
  3. 3.Institut für Meteorologie und KlimaforschungKarlsruher Institut für Technologie (KIT)KarlsruheGermany

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