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Meelis Mölder

Forskningsingenjör

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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

Författare

  • Elena Kvon
  • Janno Tuulik
  • Meelis Mölder
  • Anders Lindroth

Summary, in 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.

Avdelning/ar

  • Institutionen för naturgeografi och ekosystemvetenskap

Publiceringsår

2012

Språk

Engelska

Sidor

537-556

Publikation/Tidskrift/Serie

Atmosphere

Volym

3

Issue

4

Dokumenttyp

Artikel i tidskrift

Förlag

MDPI AG

Ämne

  • Physical Geography

Nyckelord

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

Status

Published

ISBN/ISSN/Övrigt

  • ISSN: 2073-4433