Accession Number:

AD0756832

Title:

Extremes of Hydrometeors at Altitude for MIL-STD-210B. Supplement: Drop-Size Distributions

Descriptive Note:

Air Force surveys in geophysics

Corporate Author:

AIR FORCE CAMBRIDGE RESEARCH LABS HANSCOM AFB MA

Personal Author(s):

Report Date:

1972-10-20

Pagination or Media Count:

15.0

Abstract:

In the basic report for this supplement, estimates were provided for extreme rainfall intensities and associated liquid water content at altitude with 0.1 and 0.5 percent probabilities in the most severe month in the rainy tropics. Analagous values were also included for two all-time record rain storms one for 1 min, and the other lasting 42 min. In this brief supplement, drop-size distributions are developed for the 1-min record, and the 0.1 and 0.5 percent Worst Month Tropics from a theoretical expression that best fits the available empirical size distributions. Liquid water content obtained from an integral of this theoretical expression is compared to the liquid water content obtained by arithmetically adding the volumes of each drop for three drop-size distributions.

Subject Categories:

  • Meteorology

Distribution Statement:

APPROVED FOR PUBLIC RELEASE