An aerosol-cloud module for inclusion in the KNMI regional climate model RACMO2

G. De Martino ...(etc.), Koninklijk Nederlands Meteorologisch Instituut
De Bilt : KNMI
2008


This report describes the development and testing of a cloud condensation nuclei (CCN) parameterization in the KNMI regional climate model RACMO2. This requires the parameterization of the cloud droplet number concentration (CDNC) as a function of aerosol loading to allow the computation of the so called indirect aerosol radiative forcing effect. Four CDNC parameterizations were selected and implemented into the Single Column version (SCM) of RACMO2. The evaluation of the CDNC schemes and their effect on the radiative transfer of clouds has been performed with a set of comprehensive observations made at Cabauw on 30 January 2007.

22 p. : fig., tab. ; 30 cm
(Scientific report = Wetenschappelijk rapport ; WR 2008-05)
With a bibliogr.
KNMIAUT2008