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Spatial scales of cirrus cloud propertiesResearch in studying the spatial scales of the cirrus, used data collected during the flight legs of the NCAR Sabreliner aircraft on four days during the FIRE Cirrus IFO to study the spatial scales of the cirrus, and will concentrate on the scales of horizontal wind. The spatial scales of the cloud features can be described by power spectra (or spectral density graphs) and cumulative variance graphs. The cumulative variance graphs were created by first using a Fast Fourier Transform (FFT) to create variance spectra. The variances were then summed in a cumulative fashion from the largest scalelengths (wavelengths) to the smallest. No detrending was done to the original data, and no smoothing or averaging was done to the spectral points. All the spectral points were included. This means that the values of the first five to ten spectral points of the large scalelengths should only be considered to be qualitatively correct. The cumulative variance at smaller scalelengths should be correct because a more accurate representation of the variance at the larger scalelengths should only redistribute the energy amongst the larger scalelengths.
Document ID
19900018959
Acquisition Source
Legacy CDMS
Document Type
Conference Paper
Authors
Hein, Paul F.
(Colorado State Univ. Fort Collins, CO, United States)
Cox, Stephen K.
(Colorado State Univ. Fort Collins, CO, United States)
Date Acquired
September 6, 2013
Publication Date
July 1, 1990
Publication Information
Publication: NASA, Langley Research Center, FIRE Science Results 1989
Subject Category
Meteorology And Climatology
Accession Number
90N28275
Funding Number(s)
CONTRACT_GRANT: NAG1-554
Distribution Limits
Public
Copyright
Work of the US Gov. Public Use Permitted.
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