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Using Principal Component Analysis (PCA) to Speed up Radiative Transfer (RT) ComputationsMultiple scattering RT calculations time-consuming. Need a speed improvement of about 1000 (for OCO)! Solution: Make use of redundancies in spectra. Correlated-k (Lacis and Wang, Lacis and Oinas, Goody et al, Fu and Liou) Problem: Assume that spectral variation of atmospheric optical properties spatially correlated at all points along optical path. High accuracy (HI) and 2-stream (2S) calculations have high correlation. Single scattering (SS) computations highly scenario-dependent, but not time consuming. Perform SS and 2S calculations at every wavelength. Perform small number of HI computations. Need to compute correction factor B at every wavelength.
Document ID
20140002066
Acquisition Source
Jet Propulsion Laboratory
Document Type
Presentation
External Source(s)
Authors
Natraj, Vijay
(Jet Propulsion Lab., California Inst. of Tech. Pasadena, CA, United States)
Date Acquired
March 19, 2014
Publication Date
July 17, 2012
Subject Category
Fluid Mechanics And Thermodynamics
Meeting Information
Meeting: Workshop on Studies of Atmospheric Aerosol Using Multi-Angle Spectropolarimetry
Location: Bern
Country: Switzerland
Start Date: July 16, 2012
End Date: July 20, 2012
Distribution Limits
Public
Copyright
Other
Keywords
data sets
Spectral Mapping

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