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Cited by 83Atmospheric aerosols and cloudsAtmospheric Ozone and ClimateAtmospheric chemistry and aerosols

Enhancement of atmospheric radiation by an aerosol layer

Michelangeli, Diane V., Allen, Mark, Yung, Yuk L., Shia, Run‐Lie, Crisp, David, Eluszkiewicz, Janusz·1992·Journal of Geophysical Research: Atmospheres
DOI 10.1029/91jd01308
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Abstract

The presence of a stratospheric haze layer may produce increases in both the actinic flux and the irradiance below this layer. Such haze layers result from the injection of aerosol‐forming material into the stratosphere by volcanic eruptions. Simple heuristic arguments show that the increase in flux below the haze layer, relative to a clear sky case, is a consequence of “photon trapping.” We explore the magnitude of these flux perturbations, as a function of aerosol properties and illumination conditions, with a new radiative transfer model that can accurately compute fluxes in an inhomogeneous atmosphere with nonconservative scatterers having arbitrary phase function. One calculated consequence of the El Chichon volcanic eruption is an increase in the midday surface actinic flux at 20°N latitude, summer, by as much as 45% at 2900 Å. This increase in flux in the UV‐B wavelength range was caused entirely by aerosol scattering, without any reduction in the overhead ozone column.

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Crossref · 10.1029/91jd01308

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  • In CESM2(WACCM6), photolysis rates are calculated using lookup tables that account for the overhead ozone column and clouds but exclude the effects of aerosols, thereby reducing the effect SAI aerosols could have on tropospheric photochemistry and ozone.

    “in CESM2(WACCM6) photolysis rates are calculated using lookup tables, taking into account the overhead ozone column and clouds but excluding the effects of aerosols, thereby reducing the effect SAI aerosols could have on tropospheric photochemistry and ozone.”

    From Air quality impacts of stratospheric aerosol injections are likely small and mainly driven by changes in climate, not aerosol settling (2026) · cites this paper as Michelangeli et al., 1992

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Authors
Michelangeli, D. V., Allen, M., Yung, Y. L., Shia, R., Crisp, D., & Eluszkiewicz, J.
Affiliations
California Institute of Technology (US)
ORCID
Venue
Journal of Geophysical Research: Atmospheres
Publisher
American Geophysical Union (AGU)
Published
1992-01-20
Volume
97
Issue
D1
Pages
865-874
ISSN
0148-0227 (ISSN-L)
DOI
10.1029/91jd01308
OpenAlex
W2013432358
Cited by
83
References
25
Citations by year
2026: 1 · 2024: 1 · 2023: 1 · 2022: 1 · 2021: 2 · 2020: 1 · 2018: 1 · 2016: 2 · 2013: 1 · 2012: 1
FWCI
12.03
Type
journal article
Language
en
Open access
closed
Licence
onlinelibrary.wiley.com/termsAndConditions#vor (vor, 7550 d)
Locations
  • Journal of Geophysical Research Atmospheres (publishedVersion)
  • PubMed (publishedVersion)
  • CaltechAUTHORS (California Institute of Technology) (submittedVersion)
Funders
California Institute of Technology
Topics
  • Physical Sciences › Environmental Science › Global and Planetary Change › Atmospheric aerosols and clouds
  • Physical Sciences › Earth and Planetary Sciences › Atmospheric Science › Atmospheric Ozone and Climate
  • Physical Sciences › Earth and Planetary Sciences › Atmospheric Science › Atmospheric chemistry and aerosols
Keywords
stratospheric haze, volcanic aerosols, photon trapping, actinic flux, UV-B radiation, aerosol light scattering, radiative transfer modeling, El Chichón eruption, ozone column, inhomogeneous atmosphere, phase function
MeSH terms
Atmosphere, Geology, Mathematics, Models, Theoretical, Ozone, Radiation, Radiometry, Scattering, Radiation, Ultraviolet Rays, Photons, Volcanic Eruptions, Geological Phenomena

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