Accession Number:

ADA114708

Title:

Coordinated Radar and Aircraft Observations of Turbulence.

Descriptive Note:

Project rept.,

Corporate Author:

MASSACHUSETTS INST OF TECH LEXINGTON LINCOLN LAB

Personal Author(s):

• Labitt,Melvin

Report Date:

1981-05-26

Pagination or Media Count:

44.0

Abstract:

Interim results of a program to measure and correlate radar-and aircraft-sensed turbulence in rainstorms are presented. The dissipation factor of a turbulent air mass can be measured by an aircraft and a weather radar. Comparisons are made between precipitation reflectivity and spectral width measurements as indicators of turbulence. The instrumentation and data processing procedures are described. Examples of turbulence observations made with a storm-penetrating aircraft and the weather radar are given. The relationship between the radar observations and the physical properties of the turbulent atmosphere are derived. The relationship of radar spectral width variance to turbulence intensity is discussed. Author

Descriptors:

• *Rain
• *Turbulence
• *Atmospheric motion
• Radar reflections
• Synchronism
• Weather reconnaissance aircraft
• Ground level
• Meteorological radar
• Intensity
• Correlation techniques
• Indicators
• Variations
• Spectra
• Coefficients
• Reflectivity
• Dissipation factor
• Storms
• Meteorological data
• Data processing
• Algorithms
• Aviation safety

Subject Categories:

• Meteorology
• Active and Passive Radar Detection and Equipment

Distribution Statement:

APPROVED FOR PUBLIC RELEASE