Extending the Simplied Arakawa-Schubert scheme for meso-scale model applications

Pan, Hua-Lu; Liu, Qingfu; Han, Jongil; Sun, Ruiyu

doi:10.7289/v5z899cm

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Extending the Simplied Arakawa-Schubert scheme for meso-scale model applications

Published Date:

2014

Series:

Office note (National Centers for Environmental Prediction (U.S.)) ; 479

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Details:

DOI:

https://doi.org/10.7289/v5z899cm

Personal Authors:

Pan, Hua-Lu ; Liu, Qingfu ; Han, Jongil ; Sun, Ruiyu ;

Corporate Authors:

National Centers for Environmental Prediction (U.S.)

Keywords:

[+]

Description:

"The Arakawa-Schubert (Arakawa and Schubert, 1974; hereafter referred to as AS) type mass-ux based cumulus parameterization schemes are now used in many global forecast models and General Circulation Models (GCMs). One of the basic assumptions of the AS scheme is that the updraft occurs in a very small area of the grid box. This then led to the famous subsidence warming feature of the mass-ux schemes. The updraft condensation heating is exactly matched by the adiabatic cooling so the updraft stays in a moist- adiabatic prole. It is the compensating subsidence that does the warming and drying of the grid box. At NCEP, the Simplied Arakawa-Schubert (SAS) scheme (Pan and Wu, 1995) has been used in the Global Forecast System (GFS) model since 1994"--Introduction. [doi:10.7289/V5Z899CM (http://dx.doi.org/10.7289/V5Z899CM)]

Document Type:

Professional Paper

Collection(s):

National Weather Service (NWS)

Place as Subject:

United States

Main Document Checksum:

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Supporting Files:

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