Approximation for the absorption coefficient of airborne atmospheric aerosol particles in terms of measurable bulk properties

Gottfried Hänel; Ralph Dlugi

doi:10.3402/tellusa.v29i1.11332

Approximation for the absorption coefficient of airborne atmospheric aerosol particles in terms of measurable bulk properties

Tellus

Volume 29 (1977): Issue 1

By: Gottfried Hänel and Ralph Dlugi

Open Access

|Jan 1977

Abstract

The absorption coefficient of airborne atmospheric aerosol particles can be approximated by

12π/λ . k/ρ . 1/n² + 2 . M/V

where λ is the wavelength of radiation, n - ik is the mean complex refractive index, ρ the mean bulk density, and M/V_k the mass of the particles per unit volume of air. This approximation gives good results at relative humidities between 0 and 0.95 for the wavelengths of radiation between 0.55 μm and 2.0 μm and between 9.25 μm and 12.0 μm. Basing on this approximation it is possible to determine the single scattering albedo of airborne atmospheric aerosol particles with known measuring techniques.

References

Bergstrom , R. W . 1973 Extinction and absorption coef-ficients of the atmospheric aerosol as a function of particle size . Beitr. Phys. Atm . 46 , 223 – 234 .
Search in Google Scholar Back to article
Chin-I Lin , Baker, M. & Charlson , R. J . 1973 Absorp-tion coefficient of atmospheric aerosol: a method for measurement . App!. Opt . 12 , 1356 – 1363 .
Search in Google Scholar Back to article
Eiden , R . 1966 The elliptical polarization of light scat-tered by a volume of atmospheric air . App!. Opt . 5 , 569 – 575 .
Search in Google Scholar Back to article
Eschelbach , G . 1973 Calculs numériques concemant in luminance, le taux de polarisation et lea divergences du flux inergetique de la region visible du spectre solaire dans l'atmosphere trouble tenant compte de la diffu-sion multiple . Ann. Geophys . 29 , 329 – 339 .
Search in Google Scholar Back to article
Fischer , K . 1971 Bestfinmung der Absorption von sichtbarer Strahlung durch Aerosolpartikeln . Beitr. Phys. Atm . 43 , 244 – 254 .
Search in Google Scholar Back to article
Fischer , K . 1973 Mass absorption coefficient of natural aerosol particles in the 0.4-2.4 pm wavelength inter-val . Beitr. Phys. Atm . 46 , 89 – 100 .
Search in Google Scholar Back to article
Fischer , K . 1975 Strahlungsabsorption durch Aerosol in den Spektralbereichen atmospharischer Transparenz . Dissertation, Nat. Fachbereiche, Johannes Gutenberg-Universität, Mainz , Germany .
Search in Google Scholar Back to article
Grassi , H . 1973 Aerosol influence on radiative cooling . Tellus 25 , 386 – 395 .
Search in Google Scholar Back to article
Grassi , H . 1974 Einfluss verschiedener Absorber des Fensterbereiches auf Abkiihlungsraten und auf die Bestimmung der Oberflächentemperatur. Beitr . Phys. Atm. 47 , 1 – 13 .
Search in Google Scholar Back to article
Hanel , G . 1968 The real part of the mean complex refractive index and the mean density of samples of atmospheric aerosol particles . Tellus 20 , 371 – 379 .
Search in Google Scholar Back to article
Hanel , G . 1971 New results concerning the dependence of visibility on relative humidity and their significance in a model for visibility forecast . Beitr. Phys. Atm . 44 , 137 – 167 .
Search in Google Scholar Back to article
Hanel , G . 1972a Computation of the extinction of visible radiation by atmospheric aerosol particles as a func-tion of relative humidity, based upon measured properties . Aerosol Sc! . 3 , 377 – 386 .
Search in Google Scholar Back to article
Hand , G . 1972b The ratio of the extinction coefficient to the mass of atmospheric aerosol particles as a func-tion of the relative humidity . Aerosol Sc! . 3 , 455 – 460 .
Search in Google Scholar Back to article
Lindberg , J. D. , & Snyder , D. G . 1973 Determination of the optical absorption coefficient of powdered materials whose particle size distribution and refrac-tive indices are unknown . AppL Opt . 12 , 573 – 578 .
Search in Google Scholar Back to article
Medalia , A. I. , & Richards , L. W . 1972 Tinting strength of carbon black. .1 . of Coll. and Interface Sci . 40 , 233 – 252 .
Search in Google Scholar Back to article
Mie , G . 1908 Beitrag zur Optik triiber Medien . Ann. Phys . 25 , 377 .
Search in Google Scholar Back to article
Penndorf , R. B . 1962 Scattering and extinction coef-ficients for small spherical aerosols . J. Atm Sc! . 19 , 193 .
Search in Google Scholar Back to article
Plass , G. N . 1966 Mie scattering and absorption cross section for absorbing particles . AppL Opt . 5 , 279 .
Search in Google Scholar Back to article
Volz , F. E . 1972 Infrared refractive index of atmo-spheric aerosol substances . App!. Opt . 11 , 755 – 759 .
Search in Google Scholar Back to article
Volz , F. E . 1973 Infrared optical constants of am-monium sulfate, Sahara dust, volcanic pumice, and flyash . App!. Opt . 12 , 564 – 568 .
Search in Google Scholar Back to article
Waggoner , A. P. , Baker , M. B. & Charlson , R. I . 1973 Optical absorption by atmospheric aerosols . App!. Opt . 12 , 896 .
Search in Google Scholar Back to article
Whitby , K. T . 1974 .Modeling of multimodal aerosol dis-tributions. Proc. of the “Jahreskongress 1974 der Gesellschaft fiir Aerosolforschung e.V.”, Bad Soden, Germany.
Search in Google Scholar Back to article
Yamamoto , G. & Tanaka , M . 1972 Increase of global albedo due to air pollution . J. Atmos. Sc! . 29 , 1405 – 1412 .
Search in Google Scholar Back to article
Zdunkowski , W. G. & McQuage , N. D . 1972 Short-term effects of aerosol on the layer near the ground in a cloudless atmosphere . Tellus 24 , 237 – 254 .
Search in Google Scholar Back to article

Articles in this issue

DOI: https://doi.org/10.3402/tellusa.v29i1.11332 | Journal eISSN: 3035-9554

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Language: English

Page range: 75 - 82

Submitted on: Nov 10, 1975

Accepted on: Mar 8, 1976

Published on: Jan 1, 1977

Published by: Stockholm University Press

In partnership with: Paradigm Publishing Services

© 1977 Gottfried Hänel, Ralph Dlugi, published by Stockholm University Press
This work is licensed under the Creative Commons Attribution 4.0 License.

Volume 29 (1977): Issue 1