Accession Number:

ADA254171

Title:

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

Descriptive Note:

Master's thesis,

Corporate Author:

AIR FORCE INST OF TECH WRIGHT-PATTERSON AFB OH

Personal Author(s):

Report Date:

1991-05-01

Pagination or Media Count:

166.0

Abstract:

This thesis addresses the need for comprehensive, accurate Low Level Turbulence LLT forecasts at the US Armys 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.

Subject Categories:

  • Meteorology

Distribution Statement:

APPROVED FOR PUBLIC RELEASE