Investigating lateral boundary forcing of weather research and forecasting (WRF) model forecasts for artillery mission support / Andre Pattantyus and Robert Dumais, Jr., mentor.

Format:

Book

Government document

Author/Creator:

Pattantyus, Andre, author.

Dumais, Robert, author.

Contributor:

U.S. Army Research Laboratory, issuing body.

Language:

English

Subjects (All):

Weather forecasting.

Artillery.

Forcing (Model theory).

artillery (firearms).

Genre:

technical reports.

Technical reports

Technical reports.

Physical Description:

1 online resource (vi, 12 pages) : color illustrations, color maps

Place of Publication:

White Sands Missile Range, NM : Army Research Laboratory, January 2013.

Language Note:

English

Summary:

Accuracy of global numerical weather prediction (NWP) models is highly dependent on initial atmospheric conditions and to a lesser extent on physical parameterizations. Generally, model error grows as a result of poor initial conditions. Limited area models (LAMs) have an additional source of error/variability from their lateral boundaries, forced from global models or other LAMs. Lateral boundary forcing can be a substantial source of error/variability for LAMs due to interpolation of coarse atmospheric data down to fine grids and high-resolution topography. Domain size has been identified as a way to control the spatial spin-up and internal variability of LAMs caused by lateral boundary conditions (LBCs). Previous research has found that larger LAM domains provide additional freedom for the model to create its own solution, whereas smaller domains are dominated by the forcing from the lateral boundaries. U.S. Army artillery uses LAM output to correct trajectories from standard atmosphere conditions to those of the current atmosphere. Sensitivity testing to the Weather Research and Forecasting model s LBCs over Europe is performed herein. Initial results from limited cases suggest modest difference between large and small domain experiments, except that the magnitude of error is a function of domain size.

The original document contains color images.

Notes:

"January 2013."

"ARL-MR-0835."

Includes bibliographical references (page 10).

Approved for public release; distribution is unlimited.

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Description based on online resource; title from PDF title page (ARL, viewed Oct. 4, 2019).

OCLC:

872730190

Access Restriction:

Open access content Open access content