A new mass-field variable for normal mode procedures with a sigma coordinate model

Ballish, Bradley Alan, 1950-

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A new mass-field variable for normal mode procedures with a sigma coordinate model

1983
By Ballish, Bradley Alan, 1950-
Series: Office note (National Centers for Environmental Prediction (U.S.)) ; 273

[PDF-947.73 KB]

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Personal Author:

Ballish, Bradley Alan, 1950-
Corporate Authors:

National Meteorological Center (U.S.)
NOAA Program & Office:

NWS (National Weather Service) ; NCEP (National Centers for Environmental Prediction)

NWS (National Weather Service) ; NCEP (National Centers for Environmental Prediction) Less -
Description:

A new mass-field variable is defined for use in normal mode initialization of a sigma coordinate model. The new variable is a nonlinear function of surface pressure and temperature whose Laplacian gives the full mass-field contribution to the divergence tendency. It is found that gravitational zeroing results in significantly smaller changes and a better balance with the new mass variable than with the old. For first order nonlinear initialization, use of the new mass variable yields only minor improvement in a global sense, but may be significant in the areas of high resolution steep orography.
Content Notes:

Bradley A. Ballish.

"March 1983."

"This is an unreviewed manuscript, primarily intended for informal exchange of information among NMC staff members."

System requirements: Adobe Acrobat Reader.

Includes bibliographical references (pages 24-25).
Keywords:

[+]

Mathematical Models Numerical Analysis Numerical Weather Forecasting Weather Forecasting
Series:

Office note (National Centers for Environmental Prediction (U.S.)) ; 273
Document Type:

Office Note
Place as Subject:

United States
Rights Information:

Public Domain
Compliance:

Library
Main Document Checksum:

[+]

urn:sha256:1879678350cdd6523d52274a80e2b9dc141f889fb86cdff92013ee69c928aa7f
Download URL:

https://repository.library.noaa.gov/view/noaa/11533/noaa_11533_DS1.pdf
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A new mass-field variable for normal mode procedures with a sigma coordinate model

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