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Photolysis of O at Hartley, Chappuis, Huggins, and Wulf bands in the middle atmosphere: Vibrational kinetics of oxygen molecules O(XΣ, ν ≤ 35)

Atmospheric and Oceanic Optics, ISSN: 2070-0393, Vol: 24, Issue: 1, Page: 6-16
2011
  • 10
    Citations
  • 0
    Usage
  • 2
    Captures
  • 0
    Mentions
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Metric Options:   Counts1 Year3 Year

Metrics Details

  • Citations
    10
    • Citation Indexes
      10
  • Captures
    2

Article Description

The advanced version of the full model of O and O photodissociation in the mesosphere and thermosphere (Yankovsky V.A., Manuilova R.O., Atmospheric and Oceanic optics, 2003, V. 16, No. 7, P. 582) was used for the calculation of vertical profiles of vibrationally excited O(X, ν) molecular concentrations in the ground electronic state for ν = 1–35. Recent data on the rate constants for reactions O(X, ν ≤ 30) + O(P) → O(X, ν′ < ν) + O(P) and O(X, ν) were included for the first time in this model. These reactions play a significant role not only in the quenching of O(X, ν) molecules, but also in the population of underlying vibrational levels of O molecules. In addition to direct processes of the production of O(X, ν ≤ 35), resulting from O photolysis, the processes of population of O(X, ν ≤ 9) molecules through the energy transfer from O(D), O(b, ν ≤ 2), and O(a, ν ≤ 5) were used in the model. The resulting quantum output (RQO) for O(X, ν = 1) molecules in process of ozone photolysis in spectral bands of not only Hartley, but also Chappuis, Huggins, and Wulf were calculated in the interval of 200–900 nm. The accounting for new processes caused an increase of RQO by 5–9% in the mesosphere. Vertical profiles of RQO and the populations of O(X, ν ≤ 35) at heights of 50–120 km, depending on SZA, in a range from 36.0 to 90.1° for a series of TIMED/SABER experiments in the latitude interval from 30.2 to 47.7° N are presented during the period of vernal equinox.

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