Atmospheric Band Fitting Coefficients Derived from Self-Consistent Rocket-Borne Experiment [post]

Mykhaylo Grygalashvyly, Martin Eberhart, Jonas Hedin, Boris Strelnikov, Franz-Josef Lübken, Markus Rapp, Stefan Löhle, Stefanos Fasoulas, Mikhail Khaplanov, Jörg Gumbel, Ekaterina Vorobeva
2018 unpublished
<p><strong>Abstract.</strong> Based on self-consistent rocket-borne measurements of temperature, densities of atomic oxygen and neutral air, and volume emission of the Atmospheric Band (762 nm) we examined the one-step and two-step excitation mechanism of <i>O</i><sub>2</sub>(<i>b</i><sup>1</sup>Σ<sub><i>g</i></sub><sup>+</sup>) for night-time conditions. Following McDade et
more » ... ollowing McDade et al. (1986), we derived the empirical fitting coefficients, which parameterize the Atmospheric Band emission <i>O</i><sub>2</sub>(<i>b</i><sup>1</sup>Σ<sub><i>g</i></sub><sup>+</sup> − <i>X</i><sup>3</sup>Σ<sub><i>g</i></sub><sup>−</sup>)(0,0) in terms of the atomic oxygen concentrations. This allows to derive atomic oxygen concentration from night-time observations of Atmospheric Band emission <i>O</i><sub>2</sub>(<i>b</i><sup>1</sup>Σ<sub><i>g</i></sub><sup>+</sup> − <i>X</i><sup>3</sup>Σ<sub><i>g</i></sub><sup>−</sup>)(0,0). The derived empirical parameters can also be utilised for Atmospheric Band modelling. Additionally, we derived fit function and corresponding coefficients for combined (one- and two-step) mechanism. Simultaneous and true common volume measurements of all the parameters used in this derivation, i.e. temperature and density of the background air, atomic oxygen density, and volume emission rate, is the novelty and the advantage of this work.</p>
doi:10.5194/acp-2018-696 fatcat:nx2lfuyq55a55a6vsx4ghgasfm