Climate Modelling with the ALADIN Numerical Weather Prediction Model
Abstract
The numerical weather prediction model ALADIN is examined for the ability to be integrated for long time periods. We present results of the first month-long and year-long integrations, nested in analyses, and validate them against observations. The validation is presented for surface temperature and precipitation, several upper air variables, and vertical profiles. The integration area covers most of Europe; the resolution is rather fine, with gridstep of about 12 (20) km for month-long (year-long) integrations. Specifically, we address the effects of (i) the interpolation in time of the deep soil boundary condition from monthly values, (ii) the relaxation of the deep soil temperature and moisture towards the climatological values, and (iii) the grid density. The Aladin NWP model is shown to be suitable to long-term integrations. The research is supported by the Grant Agency of the Czech Republic, project 205/01/0804.
- Publication:
-
EGS - AGU - EUG Joint Assembly
- Pub Date:
- April 2003
- Bibcode:
- 2003EAEJA.....5449H