Topography in Weather and Climate Models: Lessons from Cut-Cell Eta vs. European Centre for Medium-Range Weather Forecasts Experiments

ournal of the Meteorological Society of Japan

article

Fedor MESINGER¹  Katarina VELJOVIC² 

[1] Serbian Academy of Sciences and Arts;Institute of Meteorology, Faculty of Physics, University of Belgrade

关键词: representation of topography;    terrain-following systems;    immersed boundary methods;    cut-cell schemes;    spectral nudging;    regional climate modeling;   

DOI  :  10.2151/jmsj.2020-050

来源: Meteorological Society of Japan

【 摘 要 】

While the terrain-following (sigma) system of representing topography in atmospheric models has been dominant for about the last 60 years, already half a century ago problems using the system were reported in areas of steep topography. A number of schemes had been proposed to address these problems. However, when topography steepness exceeds a given limit all these schemes except the vertical interpolation of the pressure gradient begin to use model information that for physical reasons they should not use.

【 授权许可】

Unknown