Aggregate terminal velocity/temperature relations

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°, -5°, and -10°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.

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Copyright 2008 American Meteorological Society (AMS). Permission to use figures, tables, and brief excerpts from this work in scientific and educational works is hereby granted provided that the source is acknowledged. Any use of material in this work that is determined to be "fair use" under Section 107 or that satisfies the conditions specified in Section 108 of the U.S. Copyright Law (17 USC, as revised by P.L. 94-553) does not require the Society's permission. Republication, systematic reproduction, posting in electronic form on servers, or other uses of this material, except as exempted by the above statements, requires written permission or license from the AMS. Additional details are provided in the AMS Copyright Policies, available from the AMS at 617-227-2425 or amspubs@ametsoc.org. Permission to place a copy of this work on this server has been provided by the AMS. The AMS does not guarantee that the copy provided here is an accurate copy of the published work.
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Author Brandes, Edward
Ikeda, Kyoko
Thompson, Gregory
Schonhuber, M.
Publisher UCAR/NCAR - Library
Publication Date 2008-10-01T00:00:00
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Topic Category geoscientificInformation
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Metadata Date 2025-07-17T15:55:50.028041
Metadata Record Identifier edu.ucar.opensky::articles:6510
Metadata Language eng; USA
Suggested Citation Brandes, Edward, Ikeda, Kyoko, Thompson, Gregory, Schonhuber, M.. (2008). Aggregate terminal velocity/temperature relations. UCAR/NCAR - Library. https://n2t.org/ark:/85065/d77s7p05. Accessed 27 August 2025.

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