New grid-scale precipitation package in the -NMC nested grid model

Hoke, James E.

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New grid-scale precipitation package in the -NMC nested grid model

1982
By Hoke, James E.
Series: Office note (National Centers for Environmental Prediction (U.S.)) ; 251

[PDF-1.74 MB]

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Personal Author:

Hoke, James E.
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 challenge in the operational numerical modeling of grid-scale precipitation is the incorporation of the fact that such precipitation occurs in nature on a spatial scale much less than that resolvable by the forecast models. That is, this nonconvective precipitation can occur in nature in a volume represented by a grid point in a forecast model even when the mean relative humidity of that volume is less than 100%. Currently this possibility is treated in NMC's operational Limited-area Fine-mesh Model (LFM) and Movable Fine-mesh Model (MFM) by reducing the definition of saturation to less than 100%, say 90%. Alternate methods have been proposed by Mathur (personal communication), Gerrity (1981), and Phillips (1981). This paper briefly reviews the method for grid-scale condensation in the LFM and MFM and the one proposed by Phillips (1981). Results of experiments incorporating the two techniques in NMC's Nested Grid Model (NGM) will be discussed"--Introduction.
Content Notes:

James E. Hoke.

"October 1982."

"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 11-12).
Keywords:

[+]

Mathematical Models Numerical Analysis Numerical Weather Forecasting Precipitation Forecasting Weather Forecasting
Series:

Office note (National Centers for Environmental Prediction (U.S.)) ; 251
Document Type:

Office Note
Place as Subject:

United States
Rights Information:

Public Domain
Compliance:

Library
Main Document Checksum:

[+]

urn:sha256:259fe5a0a9231651feef49031ba4ec62d5b77c3a4091c69f97b0ea4d11666921
Download URL:

https://repository.library.noaa.gov/view/noaa/11553/noaa_11553_DS1.pdf
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New grid-scale precipitation package in the -NMC nested grid model

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