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Boundary-layer turbulent processes and mesoscale variability represented by Numerical Weather Prediction models during the BLLAST campaign
CNRM Meteo France, F-31057 Toulouse, France;CNRS, F-31057 Toulouse, France.
CNRM Meteo France, F-31057 Toulouse, France;CNRS, F-31057 Toulouse, France.
CNRM Meteo France, F-31057 Toulouse, France;CNRS, F-31057 Toulouse, France.
Univ Toulouse, CNRS, Lab Aerol, Toulouse, France.
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2016 (English)In: Atmospheric Chemistry and Physics Discussions, ISSN 1680-7367, E-ISSN 1680-7375, Vol. 16, no 14, 8983-9002 p.Article in journal (Refereed) Published
Abstract [en]

This study evaluates the ability of three operational models, AROME, ARPEGE and ECMWF, to predict the boundary-layer turbulent processes and mesoscale variability observed during the Boundary Layer Late-Afternoon and Sunset Turbulence (BLLAST) field campaign. AROME is a 2.5 km limited area non-hydrostatic model operated over France, ARPEGE a global model with a 10 km grid-size over France and ECMWF a global model with a 16 km grid-size. We analyze the representation of the vertical profiles of temperature and humidity and the time evolution of near surface atmospheric variables as well as the radiative and turbulent fluxes for a total of 12 24h-long Intensive Observing Periods. Special attention is paid to the evolution of the turbulent kinetic energy that was sampled by a combination of independent instruments. For the first time, this variable, which is a central variable in the turbulence scheme used in AROME and ARPEGE, is evaluated with observations.

Place, publisher, year, edition, pages
2016. Vol. 16, no 14, 8983-9002 p.
National Category
Meteorology and Atmospheric Sciences
Research subject
Meteorology
Identifiers
URN: urn:nbn:se:uu:diva-278652DOI: 10.5194/acp-16-8983-2016ISI: 000381213300014OAI: oai:DiVA.org:uu-278652DiVA: diva2:906765
Available from: 2016-02-25 Created: 2016-02-25 Last updated: 2016-11-25Bibliographically approved

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