The IGCM is based on the primitive-equations baroclinic model of Hoskins and Simmons, which has been converted to run on workstations. Several variations have been developed by adjusting representations of the physics.
IGCM1: Portable version of the original spectral, dry baroclinic model formulated in sigma-levels, with an option for Newtonian relaxation and Rayleigh friction, with no surface.
IGCM2: Includes simplified moist parameterisations, a cheap "radiation scheme" (i.e. constant tropospheric cooling), a bulk formulation scheme for the boundary layer, fixed surface temperatures and humidity, uniform vertical diffusion, and can advect tracers.
IGCM3x: Intermediate climate model that includes more sophisticated moisture/clouds parameterisations, a radiation scheme with various gas absorbers and a more realistic surface with an orography and land and sea surface schemes.
The adiabatic version, IGCM1, is freely available. Access to IGCM2 and IGCM3 is restricted to members of the Department of Meteorology at the University of Reading and collaborating researchers.
intermediate, general, circulation, model, this, article, needs, additional, citations, verification, please, help, improve, this, article, adding, citations, reliable, sources, unsourced, material, challenged, removed, find, sources, news, newspapers, books, . This article needs additional citations for verification Please help improve this article by adding citations to reliable sources Unsourced material may be challenged and removed Find sources Intermediate General Circulation Model news newspapers books scholar JSTOR August 2015 Learn how and when to remove this message The Reading Intermediate General Circulation Model IGCM is a simplified or intermediate Global climate model which is developed by members of the Department of Meteorology permanent dead link at the University of Reading and by members of the Stratospheric Dynamics and Chemistry Group of the Department of Atmospheric and Oceanic Sciences at McGill University The IGCM is based on the primitive equations baroclinic model of Hoskins and Simmons which has been converted to run on workstations Several variations have been developed by adjusting representations of the physics IGCM1 Portable version of the original spectral dry baroclinic model formulated in sigma levels with an option for Newtonian relaxation and Rayleigh friction with no surface IGCM2 Includes simplified moist parameterisations a cheap radiation scheme i e constant tropospheric cooling a bulk formulation scheme for the boundary layer fixed surface temperatures and humidity uniform vertical diffusion and can advect tracers IGCM3x Intermediate climate model that includes more sophisticated moisture clouds parameterisations a radiation scheme with various gas absorbers and a more realistic surface with an orography and land and sea surface schemes The adiabatic version IGCM1 is freely available Access to IGCM2 and IGCM3 is restricted to members of the Department of Meteorology at the University of Reading and collaborating researchers See also editGlobal climate modelExternal links editIGCM web page nbsp This climatology related article is a stub You can help Wikipedia by expanding it vte Retrieved from https en wikipedia org w index php title Intermediate General Circulation Model amp oldid 1168283712, wikipedia, wiki, book, books, library,
