Accession Number : ADA133136

Title :   Growth Processes of Snow.

Descriptive Note : Final rept. 1 Nov 79-28 Feb 83,

Corporate Author : MASSACHUSETTS INST OF TECH CAMBRIDGE

Personal Author(s) : Lo,Kwok-Wai Kenneth

PDF Url : ADA133136

Report Date : May 1983

Pagination or Media Count : 193

Abstract : The growth of snow in winter storms is studied via observational and theoretical techniques. A new flight procedure termed the Advecting Spiral Descent (ASD) was employed by AFGL's instrumented C-130 aircraft to observe the height evolution of snow size spectra. These observations reveal that snow growth goes through three distinct stages: a vapor deposition stage, an aggregation stage and a secondary ice particle production stage. Theoretical models are used to simulate the observations of snow growth. These indicate that the secondary ice crystal production is due to the collisional breakup of snowflakes. (Author)

Descriptors :   *SNOW, GROWTH(GENERAL), ICE, CRYSTALS, STORMS, WINTER, MEASUREMENT, AIRBORNE, FLIGHT MANEUVERS

Subject Categories : Meteorology
      Snow, Ice and Permafrost

Distribution Statement : APPROVED FOR PUBLIC RELEASE