Boundary-Layer Meteorology

, Volume 128, Issue 1, pp 77–101

Intercomparison and Evaluation of MM5 and Meso-NH mesoscale models in the stable boundary layer

Original Paper

DOI: 10.1007/s10546-008-9269-y

Cite this article as:
Bravo, M., Mira, T., Soler, M.R. et al. Boundary-Layer Meteorol (2008) 128: 77. doi:10.1007/s10546-008-9269-y

Abstract

Atmospheric numerical models depend critically on realistic treatment of the lower boundary conditions. In strongly thermally-stratified conditions, turbulence may be very weak and the models may find it difficult to produce a good forecast near the surface. Under clear skies and for weak synoptic winds the determining factors are the turbulent kinetic energy and surface-layer parameterizations, which can be very different between models. Here, two state-of-the-art mesoscale models (MM5 and Meso-NH) are operated under exactly the same conditions for two different nights over the Duero basin in the Iberian Peninsula: one night with a well-defined synoptic wind and a second with practically no horizontal pressure gradient. The models are inter-compared and checked against available information, and their performances are evaluated.

Keywords

Mesoscale modelsSurface-layer parameterizationsStrong thermally- stratified conditions

Copyright information

© Springer Science+Business Media B.V. 2008

Authors and Affiliations

  1. 1.Department of Astronomy and Meteorology, Faculty of PhysicsUniversity of BarcelonaBarcelonaSpain
  2. 2.Grup de Meteorologia, Departament de FísicaUniversitat de les Illes BalearsPalma de MallorcaSpain