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New explicit equations for the accurate calculation of the growth and evaporation of hydrometeors by the diffusion of water vaporThe traditional explicit growth equation has been widely used to calculate the growth and evaporation of hydrometeors by the diffusion of water vapor. This paper reexamines the assumptions underlying the traditional equation and shows that large errors (10-30 percent in some cases) result if it is used carelessly. More accurate explicit equations are derived by approximating the saturation vapor-density difference as a quadratic rather than a linear function of the temperature difference between the particle and ambient air. These new equations, which reduce the error to less than a few percent, merit inclusion in a broad range of atmospheric models.
Document ID
19920069975
Acquisition Source
Legacy CDMS
Document Type
Reprint (Version printed in journal)
Authors
Srivastava, R. C.
(NASA Headquarters Washington, DC United States)
Coen, J. L.
(Chicago, University IL, United States)
Date Acquired
August 15, 2013
Publication Date
September 1, 1992
Publication Information
Publication: Journal of the Atmospheric Sciences
Volume: 49
Issue: 17 S
ISSN: 0022-4928
Subject Category
Meteorology And Climatology
Accession Number
92A52599
Funding Number(s)
CONTRACT_GRANT: NSF ATM-89-03683
CONTRACT_GRANT: NSF ATM-91-05182
CONTRACT_GRANT: NGT-50449
Distribution Limits
Public
Copyright
Other

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