Accession Number:

AD0755441

Title:

Doppler Turbulence Measurements in an Evaporating 'Stalactite' Cloud Base Zone.

Descriptive Note:

Technical rept.,

Corporate Author:

CHICAGO UNIV ILL LAB FOR ATMOSPHERIC PROBING

Personal Author(s):

Report Date:

1972-07-01

Pagination or Media Count:

25.0

Abstract:

The evaporating base of an ice crystal cloud deck is commonly marked by mammata-form vertical appendages which have come to be called stalactites. Because this zone is cooled by evaporation from above, its lower portion becomes convectively unstable and turbulence may result Atlas, 1955. The primary objective of this work is to measure and describe the vertical air motions in a case of moderate turbulence associated with a stalactite zone. A secondary goal is to assess the validity of the use of the root mean square rms Doppler velocity in lieu of the mean Doppler velocity in turbulence and other measurements. This problem is of interest because the former is simpler to measure than the latter and is in more widespread use.

Subject Categories:

  • Meteorology

Distribution Statement:

APPROVED FOR PUBLIC RELEASE