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Validation Of A Surface Layer Windflow Model Using Climatology And Meteorological Tower Data From Vandenberg Afb California

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Validation Of A Surface Layer Windflow Model Using Climatology And Meteorological Tower Data From Vandenberg Afb California

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Author : John M. Lanicci
language : en
Publisher:
Release Date : 1986

Validation Of A Surface Layer Windflow Model Using Climatology And Meteorological Tower Data From Vandenberg Afb California written by John M. Lanicci and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1986 with Atmospheric models categories.

This report describes the 2nd phase of a study involving a surface-layer windflow model. The model produces a two-dimensional (x-y plane) variational analysis of windflow by employing Gauss' principle of least constraints to adjust an initial windfield to effects of topography, stability, momentum advection, and mass conservation. It used detailed terrain data (100 to 200 m horizontal resolution) to compensate for sparse meteorological data available over the small areas for which the model is run (25 to 250 sq km). The first phase involved testing of the model to effects of stability and vegetation using terrain, vegetation, and climate for Ft. Polk, LA. The 2nd phase involves further model development, including changes in meteorological data input as well as changes in wind and stability initializations. Model experiments using artificially-produced terrain were conducted to test these changes. A two-part model validation was then performed using climate data and archived meteorological tower data from Vandenberg AFB, California. The area of interest is 11 x 12 km, and covers the South Vandenberg Launch Complex.

A Prototype Windflow Modeling System For Tactical Weather Support Operations

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Author : John M. Lanicci
language : en
Publisher:
Release Date : 1987

A Prototype Windflow Modeling System For Tactical Weather Support Operations written by John M. Lanicci and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1987 with Clouds categories.

This report documents the culmination of a three-year development and testing effort on a two-dimensional (x-y plane) surface-layer windflow model for complex terrain. The model was acquired from the U.S. Army Atmospheric Sciences Laboratory (ASL) at White Sands, New Mexico in 1984. The version of the model described in this report has been adapted to run using real time data on both the Zenith-100 and IBM-compatible Zenith-248 computers. The model accepts input of a single surface observation (or forecast) of wind, temperature, and cloud cover, and uses this information along with terrain information and the date/time to diagnose the surface-layer stability. 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. 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. We present an overview of potential military and nonmilitary uses for the model, and describe the relevant physics and computer architecture of the model and its two utility plotting routines. A user's guide, included here as Section 4, is primarily aimed at providing operational users such as forecasters some guidelines for using the model and interpreting the output. Finally, we present the results of an operational test of the model in support of Army Special Forces operations at Ft. Devens, Massachusetts. The test results illustrate the model's potential as a tactical weather support tool for low-level aviation and paradrop activities.

Scientific And Technical Aerospace Reports

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Author :
language : en
Publisher:
Release Date : 1987

Scientific And Technical Aerospace Reports written by and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1987 with Aeronautics categories.

Wadoct An Atmospheric Dispersion Model For Complex Terrain

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Author : Bruce A. Kunkel
language : en
Publisher:
Release Date : 1990

Wadoct An Atmospheric Dispersion Model For Complex Terrain written by Bruce A. Kunkel and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1990 with Atmospheric diffusion categories.

Technical Reports Awareness Circular Trac

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Author :
language : en
Publisher:
Release Date : 1987-06

Technical Reports Awareness Circular Trac written by and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1987-06 with Science categories.

Monthly Catalog Of United States Government Publications

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Author : United States. Superintendent of Documents
language : en
Publisher:
Release Date : 1993

Monthly Catalog Of United States Government Publications written by United States. Superintendent of Documents and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1993 with Government publications categories.