Comets, ice ages, and ecological catastrophes

Details Comets, ice ages, and ecological catastrophes Comets, ice ages, and ecological catastrophes

Feb 1978

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1978ap%26ss..53..523h&link_type=abstract

Astrophysics and Space Science, vol. 53, no. 2, Feb. 1978, p. 523-526

Astronomy and Astrophysics

Astrophysics

21

Climatology, Comets, Ecology, Greenhouse Effect, Ice Formation, Albedo, Comet Nuclei, Cooling, Upper Atmosphere

Scientific paper

A total mass of the order of 10 to the 14th power g added to earth's upper atmosphere in the form of small particles of high albedo for visual wavelengths would produce an inverse greenhouse effect, shielding ground level from sunlight but permitting infrared radiation from the ground to escape into space. Such a mass of small particles might be acquired by earth in a close approach to a cometary nucleus. Ice ages and ecodisasters, such as that which occurred 65 million years ago, could arise from the effects of such an addition of small particles.

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