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GME-Aquaplanet version of the german weather service
The GME-Aqua-Planet is based on the version 1.29.1.1 of the operational global weather forecast model (Global Modell Europa) of the German Weather Service (DWD). The Aqua-Planet contains the full model physics of the GME (see Majewski et al. 2002) with simplified boundary conditions and climatological fields. At the lower boundary the topography is set to zero height and land points are removed, so that the whole planet is covered by sea water. For the runs presented here the Sea Surface Temperature (SST) is kept fixed, which means that the ocean is an infinite reservoir of heat and moisture, without internal transport. This means at the same time, that the upwelling long-wave radiation is constant and independent of the solar radiation. At the upper boundary the incoming solar radiation is set to perpetual equinoctial conditions, so that seasonal effects are excluded. If not otherwise stated the daily solar cycle is still present. The climatological fields, i. e. trace gases and aerosol concentrations, are symmetrized about the equator and made independent of longitude. The geometrical and physical constants are the same as in the operational GME, so that the Aqua-Planet is still earth-like. Starting point for the development of the GME-Aqua-Planet was the Aqua-Planet-Experiment project suggested by Neale and Hoskins (2001). For more information about the experimental set-up see here.
Literature:
Deltlev Majwski, Doerte Liermann, Peter Prohl, Bodo Ritter, Michael Buchhold, Thomas Hanisch, Gerhard Paul and Werner Wergen, 2002:The Operational Global Icosahedral-Hexagonal Gridpoint Model GME: Description and High-Resolution Tests, Mon. Wea. Rev., 130, 319-338.
Neale, R. B. and B. J. Hoskins, 2001a: A standard test for AGCMs including their physical parametrizations: I: The proposal, Atmos. Sci. Lett., doi:10.1006/asle.2000.0019.
Neale, R. B. and B. J. Hoskins, 2001b: A standard test for AGCMs including their physical parametrizations: I: Results for The Met Office Model, Atmos. Sci. Lett., doi:10.1006/asle.2000.0020.

 

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