Let's try non-linear initialization simply and correctly (at least to start with)

Phillips, Norman A., 1923-

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Let's try non-linear initialization simply and correctly (at least to start with)

1981
By Phillips, Norman A., 1923-
Series: Office note (National Centers for Environmental Prediction (U.S.)) ; 226

[PDF-736.91 KB]

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Personal Author:

Phillips, Norman A., 1923-
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:

The Machenhauer non-linear initialization method as implemented at NMC is shown to contain theoretical inconsistencies that probably explain some of the convergence problems and restrictions that NMC has encountered. The general remedy is to follow the Baer approach by (a) first setting all fast mode amplitudes to zero and then (b) doing only one Machenhauer iteration. Two exceptions to this prescription occur with intense orographic uplift and with intense release of latent heat. In these cases, the large vertical velocities found in gravity waves will be needed to get the correct starting field in step (a).
Content Notes:

Norman A. Phillips.

"January 1981."

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

System requirements: Adobe Acrobat Reader.
Keywords:

[+]

Computer Programs Linear Programming Mathematical Models Numerical Weather Forecasting Weather Forecasting
Series:

Office note (National Centers for Environmental Prediction (U.S.)) ; 226
Document Type:

Office Note
Rights Information:

Public Domain
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Library
Main Document Checksum:

[+]

urn:sha256:9520681e0672d45da9648104af6a557fa0f978ee869c14660045423598d22f8e
Download URL:

https://repository.library.noaa.gov/view/noaa/12141/noaa_12141_DS1.pdf
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Let's try non-linear initialization simply and correctly (at least to start with)

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