Next Article in Journal
A Support Vector Machine Hydrometeor Classification Algorithm for Dual-Polarization Radar
Next Article in Special Issue
Validation of MODIS-Aqua Aerosol Products C051 and C006 over the Beijing-Tianjin-Hebei Region
Previous Article in Journal
Temperature-Dependent Diffusion of H2SO4 in Air at Atmospherically Relevant Conditions: Laboratory Measurements Using Laminar Flow Technique
Open AccessReview

Parameterization of the Aerosol Upscatter Fraction as Function of the Backscatter Fraction and Their Relationships to the Asymmetry Parameter for Radiative Transfer Calculations

by 1,* and 2,†
1
Laboratory for Aerosol Science, Spectroscopy, and Optics, Desert Research Institute, Nevada System of Higher Education, Reno, NV 89512, USA
2
Earth System Research Laboratory, National Oceanic and Atmospheric Administration, Boulder, CO 80305, USA
*
Author to whom correspondence should be addressed.
Current address: Cooperative Institute for Research in Earth Sciences, University of Colorado, Boulder, CO 80305, USA.
Atmosphere 2017, 8(8), 133; https://doi.org/10.3390/atmos8080133
Received: 9 June 2017 / Revised: 12 July 2017 / Accepted: 20 July 2017 / Published: 25 July 2017
(This article belongs to the Special Issue Aerosol Optical Properties: Models, Methods & Measurements)
Simple analytical approximations for aerosol radiative forcing generally contain the aerosol upscatter fraction (the fraction of scattered light that is scattered into the upper hemisphere), while ambient measurements generally yield the backscatter fraction, and theoretical calculations of scattering phase functions often yield the asymmetry parameter. Therefore, simple analytical relationships and parameterizations relating these three parameters are very valuable for radiative transfer calculations. Here, we review published parameterizations, mostly based on the Henyey-Greenstein phase function, and evaluate their goodness and range of validity. In addition, we give new parameterizations that are valid over the full range of backscatter fractions that are possibly encountered in the ambient atmosphere (i.e., 0 to 0.5). View Full-Text
Keywords: aerosols; particles; radiative transfer; light scattering; theory aerosols; particles; radiative transfer; light scattering; theory
Show Figures

Figure 1

MDPI and ACS Style

Moosmüller, H.; Ogren, J.A. Parameterization of the Aerosol Upscatter Fraction as Function of the Backscatter Fraction and Their Relationships to the Asymmetry Parameter for Radiative Transfer Calculations. Atmosphere 2017, 8, 133.

Show more citation formats Show less citations formats
Note that from the first issue of 2016, MDPI journals use article numbers instead of page numbers. See further details here.

Article Access Map

1
Back to TopTop