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Modelling Regional Surface Energy Exchange and Boundary Layer Development in Boreal Sweden - Comparison of Mesoscale Model (RAMS) Simulations with Aircraft and Tower Observations

Author:
  • Elena Kvon
  • Janno Tuulik
  • Meelis Mölder
  • Anders Lindroth
Publishing year: 2012
Language: English
Pages: 537-556
Publication/Series: Atmosphere
Volume: 3
Issue: 4
Document type: Journal article
Publisher: MDPI AG

Abstract english

Simulation of atmospheric and surface processes with an atmospheric model (RAMS) during a period of ten days in August 2001 over a boreal area in Sweden were compared to tower measurements and aircraft measurements of vertical profiles as well as surface fluxes from low altitude flights. The shape of the vertical profiles was simulated reasonably well by the model although there were significant biases in absolute values. Surface fluxes were less well simulated and the model showed considerable sensitivity to initial soil moisture conditions. The simulations were performed using two different land cover databases, the original one supplied with the RAMS model and the more detailed CORINE database. The two different land cover data bases resulted in relatively large fine scale differences in the simulated values. The conclusion of this study is that RAMS has the potential to be used as a tool to estimate boundary layer conditions and surface fluxes and meteorology over a boreal area but also that further improvement is needed.

Keywords

  • Physical Geography
  • RAMS
  • mesoscale climate
  • boreal region
  • Norunda tower
  • airborne data

Other

Published
  • ISSN: 2073-4433
E-mail: meelis [dot] molder [at] nateko [dot] lu [dot] se

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Department of Physical Geography and Ecosystem Science
Lund University
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S-223 62 Lund
Sweden

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