Aggregate Terminal Velocity/Temperature Relations

被引：46

作者：

Brandes, Edward A. ^{[1
]}

Ikeda, Kyoko ^{[1
]}

Thompson, Gregory ^{[1
]}

Schoenhuber, Michael ^{[2
]}

机构：

[1] Natl Ctr Atmospher Res, Boulder, CO 80307 USA

[2] Joanneum Res, Graz, Austria

来源：

JOURNAL OF APPLIED METEOROLOGY AND CLIMATOLOGY | 2008年 / 47卷 / 10期

基金：

美国国家科学基金会;

关键词：

D O I：

10.1175/2008JAMC1869.1

中图分类号：

P4 [大气科学（气象学）];

学科分类号：

0706 ; 070601 ;

摘要：

Terminal velocities of snow aggregates in storms along the Front Range in eastern Colorado are examined with a ground-based two-dimensional video disdrometer. Power-law relationships for particles having equivalent volume diameters of 0.5-20 mm are computed for the temperatures -1 degrees, -5 degrees, and -10 degrees C. Fall speeds increase with temperature. Comparison with relationships found in the literature suggests that temperature-dependent relations may be surrogates for relations based on aggregate composition (e. g., plates, columns, or dendrites) and the degree of riming.

引用

页码：2729 / 2736

页数：8

共 29 条

[1]

AUER AH, 1971, WEATHER, V26, P121

[2] A statistical and physical description of hydrometeor distributions in Colorado snowstorms using a video disdrometer [J].