Original scientific paper

INCLUSION OF A TURBULENCE PARAMETERISATION IN A DIAGNOSTIC MASS CONSISTENT MODEL DRIVEN BY A PROGNOSTIC MODEL

Silvia Trini Castelli ; Institute of Atmospheric Sciences and Climate, National Research Council (ISAC-CNR), Torino, Italy
Domenico Anfossi ; Institute of Atmospheric Sciences and Climate, National Research Council (ISAC-CNR), Torino, Italy
Giovanni Belfiore ; Institute of Atmospheric Sciences and Climate, National Research Council (ISAC-CNR), Torino, Italy

Abstract

Diagnostic atmospheric mass-consistent models generally are used together with turbulence parameterisations defined for
flat terrain, thus in principle not able to catch the variability of the turbulence field induced by the presence of complex terrain and
inhomogeneous conditions. The possibility of using prognostic turbulence fields produced accounting for the topography is then an
appealing approach in inhomogeneous conditions. In this work we test an interpolation procedure applied to the turbulence fields
output by a regional atmospheric model to calculate high-resolution fields, which are then coupled with the mean flow produced by
a mass-consistent model. We apply this methodology to the RAMS model, using different turbulence closures, and we evaluate the
feasibility of using interpolating modules paired up to MINERVE mass-consistent model.

Keywords

turbulence fields; atmospheric models; diagnostic mass-consistent models; downscaling; interpolating procedures

Hrčak ID:

64251

URI

https://hrcak.srce.hr/64251

Publication date:

12.12.2008.

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