Contribution to polar albedo from a mesospheric aerosol layer

Details Contribution to polar albedo from a mesospheric aerosol layer Contribution to polar albedo from a mesospheric aerosol layer

May 1977

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1977jgr....82.1893h&link_type=abstract

Journal of Geophysical Research, vol. 82, May 1, 1977, p. 1893-1900.

Mathematics

Logic

2

Aerosols, Albedo, Atmospheric Radiation, Diffuse Radiation, Ice, Mesosphere, Polar Regions, Air Pollution, Atmospheric Models, Atmospheric Stratification, Climatology, Earth Atmosphere, Time Dependence

Scientific paper

An examination is made of the impact of a layer of particulate matter, assumed to be ice crystals, on the albedo of the polar region. The model is time dependent, includes the growth of the layer, and incorporates the diffuse nature of radiation reflected from the surface and atmosphere. Although the magnitude of the effect is about an order of magnitude less than previous results, the impact is one of heating instead of cooling. It is also shown that ignoring the diffuse nature of the radiation reflected from the underlying earth-atmosphere system, as has been done in many previous simple models, can result in overestimation of the climatological impact of aerosols in sign and magnitude by a factor of up to 4-6.

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