NDLI: Importance of aggregation and small ice crystals in cirrus clouds, based on observations and an ice particle growth model

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Importance of aggregation and small ice crystals in cirrus clouds, based on observations and an ice particle growth model

Content Provider	NASA Technical Reports Server (NTRS)
Author	Dong, Yayi Chai, Steven K. Mitchell, David L. Arnott, W. Patrick Hallett, John
Copyright Year	1993
Description	The 1 November 1986 FIRE I case study was used to test an ice particle growth model which predicts bimodal size spectra in cirrus clouds. The model was developed from an analytically based model which predicts the height evolution of monomodal ice particle size spectra from the measured ice water content (IWC). Size spectra from the monomodal model are represented by a gamma distribution, N(D) = N(sub o)D(exp nu)exp(-lambda D), where D = ice particle maximum dimension. The slope parameter, lambda, and the parameter N(sub o) are predicted from the IWC through the growth processes of vapor diffusion and aggregation. The model formulation is analytical, computationally efficient, and well suited for incorporation into larger models. The monomodal model has been validated against two other cirrus cloud case studies. From the monomodal size spectra, the size distributions which determine concentrations of ice particles less than about 150 mu m are predicted.
File Size	244025
Page Count	4
File Format	PDF
Alternate Webpage(s)	http://archive.org/details/NASA_NTRS_Archive_19940017863
Archival Resource Key	ark:/13960/t1zd2v31t
Language	English
Publisher Date	1993-12-01
Access Restriction	Open
Subject Keyword	Meteorology And Climatology Particle Size Distribution Ice Nuclei Cloud Physics Cirrus Clouds Moisture Content Atmospheric Models Ice Particle Precipitation Cloud Glaciation Diffusion Ice Clouds Ntrs Nasa Technical Reports Server (ntrs) Nasa Technical Reports Server Aerodynamics Aircraft Aerospace Engineering Aerospace Aeronautic Space Science
Content Type	Text
Resource Type	Article

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