User's Guide for the Air Force Surface-Layer Windflow Model (AFWIND)

Abstract

AFWIND is a two-dimensional (xy plane) surface-layer wind flow model for complex terrain. The model runs on most IBM-compatible microcomputers with enhanced graphics capability. The model accepts single or multiple observations of surface winds. The model then performs a variational analysis of the windfield, adjusting the winds through a relaxation technique until the windfield conforms to effects of topography, stability, ambient flow conditions, and mass continuity. Atmospheric stability is determined from either date/time, wind speed, and cloud cover, or from vertical temperature profile measurements. The model is designed to produce high resolution wind analyses, typically running on domains on the order of 10 x 10 km, with horizontal grid spacing of 100 to 200 m. This report describes the structure of the computer code and the input data requirements. An example run is given. Keywords: Atmosphere models; Complex terrain.

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Document Details

Document Type
Technical Report
Publication Date
Jul 08, 1988
Accession Number
ADA208710

Entities

People

  • Bruce A. Kunkel

Organizations

  • Air Force Research Laboratory

Tags

Communities of Interest

  • Energy and Power Technologies
  • Weapons Technologies

DTIC Thesaurus Topics

  • Air Force
  • Atmospheric Sciences
  • Classification
  • Cloud Cover
  • Clouds
  • Computers
  • Grids
  • High Resolution
  • Measurement
  • Meteorological Data
  • Personal Computers
  • Snow Cover
  • Surface Roughness
  • Surface Temperature
  • Temperature Gradients
  • Two Dimensional
  • Wind Direction

Readers

  • Computer Science.
  • Ocean-Atmosphere Mesoscale Modeling, Data Assimilation, and Flux Boundary Layers

Technology Areas

  • Space