Photolysis of O3 at Hartley, Chappuis, Huggins, and Wulf bands in the middle atmosphere: Vibrational kinetics of oxygen molecules O2(X3Σ g − , ν ≤ 35)

Yankovsky, Valentine; Babaev, A.S.

doi:10.1134/s1024856011010155

Cited by 10 publications

(11 citation statements)

References 21 publications

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“…Esposito et al [62] calculated the values of the reaction (14) rate coefficients for ∆v = 1-30 (see Figure 6). This reaction turned out to be one of the keys for modeling population of O 2 (X 3 Σ − g , v = 1) level in the MLT region [33,34]. A distinctive feature of this mechanism is that in order to populate the lower vibrational level O 2 (X 3 Σ − g , v = 1), cascade transitions from all overlying levels v = 2-30 must be considered.…”

Section: Energy Transfer In Collisional Reactionsmentioning

confidence: 99%

“…The model of electronic-vibrational kinetics of O 2 and O 3 photolysis products in the middle atmosphere which solves all the aforementioned issues and includes the model MSZ as a special case was designed at Atmospheric Physics Department, Saint Petersburg State University [30]. Since 2003, different upgrades of that model have been published [1,2,[31][32][33][34][35] etc. The last modified version of the YM2011 will be presented in this study.…”

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confidence: 99%

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Model of Daytime Oxygen Emissions in the Mesopause Region and Above: A Review and New Results

Yankovsky

Vorobeva

2020

Atmosphere

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Atmospheric emissions of atomic and molecular oxygen have been observed since the middle of 19th century. In the last decades, it has been shown that emissions of excited oxygen atom O(1D) and molecular oxygen in electronically–vibrationally excited states O2(b1Σ+g, v) and O2(a1Δg, v) are related by a unified photochemical mechanism in the mesosphere and lower thermosphere (MLT). The current paper consists of two parts: a review of studies related to the development of the model of ozone and molecular oxygen photodissociation in the daytime MLT and new results. In particular, the paper includes a detailed description of formation mechanism for excited oxygen components in the daytime MLT and presents comparison of widely used photochemical models. The paper also demonstrates new results such as new suggestions about possible products for collisional reactions of electronically–vibrationally excited oxygen molecules with atomic oxygen and new estimations of O2(b1Σ+g, v = 0–10) radiative lifetimes which are necessary for solving inverse problems in the lower thermosphere. Moreover, special attention is given to the “Barth’s mechanism” in order to demonstrate that for different sets of fitting coefficients its contribution to O2(b1Σ+g, v) and O2(a1Δg, v) population is neglectable in daytime conditions. In addition to the review and new results, possible applications of the daytime oxygen emissions are presented, e.g., the altitude profiles O(3P), O3 and CO2 can be retrieved by solving inverse photochemical problems when emissions from electronically vibrationally excited states of O2 molecule are used as proxies.

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Section: Energy Transfer In Collisional Reactionsmentioning

confidence: 99%

mentioning

confidence: 99%

Model of Daytime Oxygen Emissions in the Mesopause Region and Above: A Review and New Results

Yankovsky

Vorobeva

2020

Atmosphere

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“…Zaras significantly improved this model in 1993 (for the sake of brevity, this model is called MSZ) [14]. In 2011, Yankovsky et al developed a complete model of electronic vibrational kinetics of O 2 and O 3 photolysis products (YM2011) [17,18]. In 2017, Martyshenko and Yankovsky solved the problem of systematic overestimation in the retrieve of ozone concentrations by taking the electronic vibrational kinetics of photolysis products of ozone and molecular oxygen O 2 (b 1 Σ g , v) and O 2 (a 1 ∆ g , v) into the scheme of electronic vibrational kinetics of the products of O 3 and O 2 photolysis [19].…”

Section: The O 2 (A 1 ∆ G ) Photochemistrymentioning

confidence: 99%

“…With the values of the rates of photodissociation and photoexcitation and the values of the rate constants of the processes considered by Yankovsky et al [17,19], the O 2 (a 1 ∆ g ) number density, n O 2 (a 1 ∆ g ) , can be calculated assuming photochemical equilibrium. Figure 3 shows the amounts of O 2 (a 1 ∆ g ) attributable to each source of predominant mechanisms.…”

Section: The O 2 (A 1 ∆ G ) Photochemistrymentioning

confidence: 99%

The Radiative Transfer Characteristics of the O2 Infrared Atmospheric Band in Limb-Viewing Geometry

Feng

et al. 2019

Remote Sensing

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The O2(a1Δg) emission near 1.27 μm provides an important means to remotely sense the thermal characteristics, dynamical features, and compositional structures of the upper atmosphere because of its photochemistry and spectroscopic properties. In this work, an emission–absorption transfer model for limb measurements was developed to calculate the radiation and scattering spectral brightness by means of a line-by-line approach. The nonlocal thermal equilibrium (non-LTE) model was taken into account for accurate calculation of the O2(a1Δg) emission by incorporating the latest rate constants and spectral parameters. The spherical adding and doubling methods were used in the multiple scattering model. Representative emission and absorption line shapes of the O 2 ( a 1 Δ g , υ ′ = 0 ) → O 2 ( X Σ g 3 , υ ″ = 0 ) band and their spectral behavior varying with altitude were examined. The effects of solar zenith angle, surface albedo, and aerosol loading on the line shapes were also studied. This paper emphasizes the advantage of using infrared atmospheric band for remote sensing of the atmosphere from 20 up to 120 km, a significant region where the strongest coupling between the lower and upper atmosphere occurs.

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“…The rate constant of this reaction strongly depends on temperature. Figure 2 shows the dependence of rate constants of these reactions on v and v. Detailed calculations of altitude profile O 2 (X 3 − g , v) concentrations for different vibrational levels up to v ≤ 35 using the updated YM-2006 model were presented in Yankovsky and Babaev (2011). López-Puertas et al (1995) estimated that in the whole altitude range, the quantum yield of the vibrationally excited O 2 (X 3 − g , v = 1) per one photodissociated O 3 molecule was equal to 4.…”

Section: Vibrational Kinetics Of O 2 (X 3 − G V)mentioning

confidence: 99%

Model of electronic-vibrational kinetics of the O₃and O₂photolysis products in the middle atmosphere: applications to water vapour retrievals from SABER/TIMED 6.3 μm radiance measurements

Yankovsky

Manuilova

Babaev

et al. 2011

International Journal of Remote Sensing

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2011) Model of electronic-vibrational kinetics of the O 3 and O 2 photolysis products in the middle atmosphere: applications to water vapour retrievals from SABER/TIMED 6.3 µm radiance measurementsIn this work, we present a methodology of simple yet accurate calculations of H 2 O(v 2 ) vibrational levels pumping from the collisions with vibrationally excited O 2 (X 3 − g , v = 1) molecules, which is required for correct retrievals of H 2 O volume mixing ratios from the 6.3 µm band radiance. The electronic-vibrational kinetics model of O 2 and O 3 photolysis products used in this study includes 44 electronic-vibrational states of the O 2 molecule (three states of O 2 (b 1 + g , v), six states of O 2 (a 1 g , v) and 35 states of O 2 (X 3 − g , v)) as well as the first excited state of atomic oxygen, O( 1 D) and considers more than 100 photochemical reactions linking these states. We introduce the Resulting Quantum Output (RQO) approach that describes the O 2 (X 3 − g , v = 1) production quantum yield per one act of O 3 photolysis in the Hartley, Huggins, Chappuis and Wulf bands (200-900 nm). We demonstrate that the RQO weakly depends on latitude and season, and suggest a parameterization formula for the altitude dependence of this parameter. We show the application of RQO to H 2 O retrievals from the 6.3 m broadband radiance measured by the Sounding of the Atmosphere using Broadband Emission Radiometry (SABER)/Thermosphere Ionosphere Mesosphere Energetics and Dynamics (TIMED) instrument that has been performing remote sensing of the Earth's atmosphere in the 13-110 km altitude range from 2002 onwards.

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Photolysis of O3 at Hartley, Chappuis, Huggins, and Wulf bands in the middle atmosphere: Vibrational kinetics of oxygen molecules O2(X3Σ g − , ν ≤ 35)

Cited by 10 publications

References 21 publications

Model of Daytime Oxygen Emissions in the Mesopause Region and Above: A Review and New Results

Model of Daytime Oxygen Emissions in the Mesopause Region and Above: A Review and New Results

The Radiative Transfer Characteristics of the O2 Infrared Atmospheric Band in Limb-Viewing Geometry

Model of electronic-vibrational kinetics of the O₃and O₂photolysis products in the middle atmosphere: applications to water vapour retrievals from SABER/TIMED 6.3 μm radiance measurements

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Photolysis of O3 at Hartley, Chappuis, Huggins, and Wulf bands in the middle atmosphere: Vibrational kinetics of oxygen molecules O2(X3Σ g − , ν ≤ 35)

Cited by 10 publications

References 21 publications

Model of Daytime Oxygen Emissions in the Mesopause Region and Above: A Review and New Results

Model of Daytime Oxygen Emissions in the Mesopause Region and Above: A Review and New Results

The Radiative Transfer Characteristics of the O2 Infrared Atmospheric Band in Limb-Viewing Geometry

Model of electronic-vibrational kinetics of the O3and O2photolysis products in the middle atmosphere: applications to water vapour retrievals from SABER/TIMED 6.3 μm radiance measurements

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Model of electronic-vibrational kinetics of the O₃and O₂photolysis products in the middle atmosphere: applications to water vapour retrievals from SABER/TIMED 6.3 μm radiance measurements