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Aeronomy of the Middle Atmosphere: Chemistry and Physics of by Guy P. Brasseur, Susan Solomon

By Guy P. Brasseur, Susan Solomon

"[…] a fascinating and well-written review of the present prestige of our wisdom of the composition of the center surroundings and the fundamental radiative, dynamical and photochemical tactics which preserve it." (Bulletin American Meteorological Society)

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Additional resources for Aeronomy of the Middle Atmosphere: Chemistry and Physics of the Stratosphere and Mesosphere (Atmospheric and Oceanographic Sciences Library)

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Academic Press, 1999. W. Rusch, On the chemistry of metastable atomic nitrogen in the F-region deduced from simultaneous satellite measurements of the 5200 ˚ A airglow and atmospheric composition. J Geophys Res: 82, 3509, 1977. , Potential energy curves for N2 , NO, O2 , and corresponding ions. RAND corporation memorandum R-4034-PR, June, 1964. , and K. Mauersberger, Laboratory studies of the nitric acid trihydrate: Implications for the south polar stratosphere. Geophys Res Lett: 15, 855, 1988.

In contrast, the NO (A2 Σ+ ) → NO (X2 Π) transition is fully allowed and the radiative lifetime of this state is correspondingly short. 88) followed by and finally 46 AERONOMY OF THE MIDDLE ATMOSPHERE commonly referred to as the Barth mechanism (Barth and Hildebrand, 1961; see the review by Bates, 1981). Here the symbols O and O2 refer to oxygen atoms and molecules in their fundamental states 3 P and 3 Σ, respectively. The green line emission provides a useful means of deducing the atomic oxygen density near 100 km, as shown for example by Slanger and Black (1977).

1990). 10. Oxygen dayglow production mechanism in the middle atmosphere. The photolysis of ozone (JHar ) in the Hartley band (λ < 320 nm) leads to the formation of the excited oxygen atom O (1 D) and molecule O2 (1 ∆g). 6 nm) leads to the formation of 2 electronically excited oxygen atoms O (1 D). ) De-activation is associated with radiative emissions (Ai ) and quenching (Qi ). 27µm. 94 for Q3 . , 1993). , 1978). Note that the hydroxyl airglow reduces the amount of energy potentially available for heat from the exothermic reaction between ozone and atomic hydrogen.

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