Vol. 20, issue 07, article # 5

Abstract:

The sensitivity of the model of electronic-vibrational kinetics of O₂ and O₃ photolysis [V.A. Yankovsky and R.O. Manuilova, Atmos. Oceanic Opt. 16, No. 7, 536-540 (2003)] to variations of basic components of mesosphere and lower thermosphere and to reaction rate constants has been studied both in the direct problem of calculation of vertical concentration profiles of O₂(b¹∑⁺_,g, v = 0÷2) and O₂(а¹Δ_g, v = 0÷5) and in the inverse problem of vertical O₃ profile retrieval from the intensities of emissions of Аtm (0-0) (762 nm) and IR Atm (0-0) (1.27 μm) O₂ bands. The interrelation is shown between the error of calculations of vertical concentration profiles of О₂(b¹∑⁺_,g, v = 0÷2) and О₂(а¹Δ_g, v = 0÷5), recovered vertical O₃ profile, and other output model parameters with the factors of model sensitivity to input parameters and their fractional errors. Groups of key atmospheric parameters and aeronomic reactions for each task have been specified. Significant dependence of vertical O₃ profile retrieval from the Atm (0-0) O₂ emission intensity on CO₂ concentration profile at altitudes from 65 to 90 km has been established.