A Small Computer Expert System for Low-Level Turbulence Forecasts at Fort Irwin, California

Abstract

This thesis addresses the need for comprehensive, accurate Low Level Turbulence (LLT) forecasts at the US Army's National Training Center (NTC), Ft Irwin, California. A LLT forecast expert system was developed for use on a small computer. The program initially derives a single macroscale turbulence index from observations of current atmospheric lapse rate, pressure tendency, wind speed, and terrain roughness for NTC. Subsequently, a field of values for a Local Scale Turbulence Index (LTI) is computed as a function of macroscale index, local terrain roughness at 1 km intervals, and winds generated from local observations and a mass consistent wind model. LTI is modified for terrain wake effects and Pilot Reports (PIREPS) of turbulence in the area.

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Document Details

Document Type
Technical Report
Publication Date
May 01, 1991
Accession Number
ADA254171

Entities

People

  • Nelson L. Smith

Organizations

  • Air Force Institute of Technology

Tags

Communities of Interest

  • Energy and Power Technologies
  • Sensors
  • Space
  • Weapons Technologies

DTIC Thesaurus Topics

  • Artificial Intelligence
  • Artificial Intelligence Software
  • Atmospheric Motion
  • Atmospheric Sciences
  • Boundary Layer
  • Computer Programs
  • Computer Science
  • Computers
  • Databases
  • Expert Systems
  • Fluid Mechanics
  • Meteorology
  • Pattern Recognition
  • Three Dimensional
  • Turbulence
  • Weather Forecasting
  • Wind Velocity

Fields of Study

  • Environmental science

Readers

  • Adaptive Control and Estimation with Uncertainty in Dynamic Systems.
  • Atmospheric Science/Meteorology
  • Military Training and Readiness Simulation