Physics
Scientific paper
Jan 1975
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1975stin...7513772d&link_type=abstract
Photodissociation of CO2 and the heat liberation associated with it in the upper atmospheres of Mars and Venus NASA Transl. into
Physics
Carbon Dioxide, Heat, Mars (Planet), Photodissociation, Planetary Atmospheres, Venus (Planet), Energy Conversion, Photons, Thermosphere
Scientific paper
The photodissociation rate of CO2 in the atmospheres of Mars and Venus was calculated. Also calculated was the heat liberation and intensities of emissions associated with photodissociation. The total bulk photodissociation rate monotonely decreased with altitude throughout the thermosphere. The role of various photodissociation channels with excitation varies with altitude. Heat liberation due to photodissociation in the lower thermosphere (at altitudes below approximately 115 km in Mars and 140 km in Venus) is greater than due to photodissociation, and even though less in the upper thermosphere, still represents a considerable proportion of the latter. The effectiveness of heat liberation (fraction of energy of absorbed photons converted to heat) varies from 0.3 in the lower thermosphere to 0.2 at roughly 200 km in Mars and Venus and continues to decrease at greater altitudes.
Dembovskiy A. V.
Iskov M. N.
Lisin O. G.
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