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PCA-based radiative transfer: Improvements to aerosol scheme, vertical layering and spectral binning

Kopparla, Pushkar and Natraj, Vijay and Limpasuvan, Drew and Spurr, Robert and Crisp, David and Shia, Run-Lie and Somkuti, Peter and Yung, Yuk L. (2017) PCA-based radiative transfer: Improvements to aerosol scheme, vertical layering and spectral binning. Journal of Quantitative Spectroscopy and Radiative Transfer, 198 . pp. 104-111. ISSN 0022-4073. http://resolver.caltech.edu/CaltechAUTHORS:20170522-075457610

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Abstract

The Principal Component Analysis (PCA)-based fast radiative transfer method has been shown to have at least an order of magnitude increase in computational speed while maintaining an overall accuracy of 0.01% (compared to line-by-line calculations) over narrow and broad spectral bands. In this paper, we describe several improvements made to the method and provide a discussion of the method’s performance over a diverse set of atmospheric profiles and land surface types. We also test the model over uniform pressure level profiles. The method is now capable of providing atmospheric spectra with residuals under 0.1%, calculated with respect to the continuum, throughout the shortwave region between 0.3−3μm at high resolution, which is substantial improvement over errors reported in earlier work. Future directions for applications and further optimization are examined.


Item Type:Article
Related URLs:
URLURL TypeDescription
https://doi.org/10.1016/j.jqsrt.2017.05.005DOIArticle
http://www.sciencedirect.com/science/article/pii/S0022407317301498PublisherArticle
Additional Information:© 2017 Elsevier Ltd. Received 18 February 2017, Revised 8 May 2017, Accepted 8 May 2017, Available online 9 May 2017.
Record Number:CaltechAUTHORS:20170522-075457610
Persistent URL:http://resolver.caltech.edu/CaltechAUTHORS:20170522-075457610
Official Citation:Pushkar Kopparla, Vijay Natraj, Drew Limpasuvan, Robert Spurr, David Crisp, Run-Lie Shia, Peter Somkuti, Yuk L Yung, PCA-based radiative transfer: Improvements to aerosol scheme, vertical layering and spectral binning, Journal of Quantitative Spectroscopy and Radiative Transfer, Volume 198, September 2017, Pages 104-111, ISSN 0022-4073, https://doi.org/10.1016/j.jqsrt.2017.05.005. (http://www.sciencedirect.com/science/article/pii/S0022407317301498)
Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:77615
Collection:CaltechAUTHORS
Deposited By: Tony Diaz
Deposited On:05 Jun 2017 20:08
Last Modified:05 Jun 2017 20:08

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