Parameterization of gravity wave momentum deposition based on nonlinear wave interactions: basic formulation and sensitivity tests

摘要: Abstract We present a practical method for parameterization of gravity wave drag based on the Medvedev and Klaassen (1995. Journal Geophysical Research 100, 25,841–25,853) theory spectral evolution saturation. The only tuning necessary scheme involves assumptions about nature source spectrum subgrid-scale waves, i.e. wavenumbers, launch heights amplitudes components. In this paper we employ column model with representative distributions mean wind temperature to examine sensitivity parameterized spectra. For range anticipated variability spectra in troposphere produces plausible results consistent observations theoretical estimates. Computationally, is as efficient multiple-wave Lindzen scheme, suitable use general circulation models (GCMs) atmosphere.