References

Becker and Burkhardt, 2007. Nonlinear Horizontal Diffusion for GCM's. American Meteorological Society, 1439-1454.

Asselin, R., 1972. Frequency filter for time integrations. Man. Wea. Rev., 100, 487-490.

Becker, E., 2003.  Energetics of turbulent momentum diffusion and gravity wave breakdown in general circulation models of the atmosphere. Habilitation, Universität Rostock. ISSN 1615-8083. 112 pp.

DKRZ (Deutsches Klimarechenzentrum), 1992. The ECHAM3 atmospheric general circulation model. Technical Report No. 6, DKRZ, Hamburg.

Holtslag, A. A. M. and B. A. Boville, 1993. Local versus nonlocal bonndary-layer diffusion in a global climate model. J. Climate, 6, 1825-1842.

Hoskins, B. J. and A. J. Simmons, 1975: A multi-layer spectral model and the semi-implicit method J. Roy. Met. Soc., 101, 637-655.

Simmons, A. J. and D. M. Burridge, 1981. An energy and angular-momentum conserving vertical finite-difference scheme and hybrid vertical coordinates. Mon. Wea. Rev.,109, 758-766.

Simmons, A. J. and J. Chen, 1991. The calculation of geopotential and the pressure gradient in the ECMWF atmospheric model: Influence on the simulation of the polar atmosphere and on temperature analyses. Q. J. R. Met. Soc, 117, 29-58.