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Proceedings Paper

Retrieval of intensive aerosol properties from MFRSR observations: partly cloudy cases
Author(s): Evgueni Kassianov; James Barnard; Larry K. Berg; Connor Flynn; Charles Long
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Paper Abstract

An approach for the obtaining column intensive aerosol properties, namely the single scattering albedo (SSA) and asymmetry parameter (ASP), from the Multi-Filter Rotating Shadowband Radiometer (MFRSR) spectral observations under partly cloudy conditions is described. The approach involves the MFRSR-based aerosol retrieval for clear-sky periods and an interpolation of the retrieved column aerosol properties for cloudy periods. The observed weak diurnal variability of SSA and ASP at the surface and the close association of the surface intensive aerosol properties with their column counterparts form the basis of such interpolation. The approach is evaluated by calculating the corresponding clear-sky total, direct and diffuse fluxes at five wavelengths (415, 500, 615, 673 and 870 nm) and compare them with the observed fluxes. The aerosol properties provided by this approach are applied for (i) an examination of the statistical relationship between spectral (visible range) and broadband values of the total normalized cloud radiative forcing and (ii) an estimation of the fractional sky cover. Data collected during 13 days with single-layer cumulus clouds observed at U.S. Department of Energy Atmospheric Radiation Measurement (ARM) Climate Research Facility (ACRF) Southern Great Plains (SGP) site during summer 2007 are applied to illustrate the performance and application of this approach.

Paper Details

Date Published: 11 October 2010
PDF: 10 pages
Proc. SPIE 7827, Remote Sensing of Clouds and the Atmosphere XV, 78270Q (11 October 2010); doi: 10.1117/12.865761
Show Author Affiliations
Evgueni Kassianov, Pacific Northwest National Lab. (United States)
James Barnard, Pacific Northwest National Lab. (United States)
Larry K. Berg, Pacific Northwest National Lab. (United States)
Connor Flynn, Pacific Northwest National Lab. (United States)
Charles Long, Pacific Northwest National Lab. (United States)

Published in SPIE Proceedings Vol. 7827:
Remote Sensing of Clouds and the Atmosphere XV
Richard H. Picard; Klaus Schäfer; Adolfo Comeron; Michiel van Weele, Editor(s)

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