Apoorva Upadhyay

Apoorva Upadhyay

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Apoorva Upadhyay

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Start Year

2018 (Cohort 5)

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PhD Project
PhD Title

Ultraviolet and Infrared absorption by the Ozone molecule

Research Theme

Environmental Pollution

Primary Supervisor
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Secondary Supervisor
Secondary Institution



State of the art, first principles quantum mechanical methods will be used to compute high accuracy transition intensities, for both the infrared (IR) and ultraviolet (UV) regions of the spectrum of ozone. For the infrared region, existing methodology of computing high accuracy dipole moment surfaces will be employed. These methods have already been used successfully for water and CO2 to calculate high accuracy transition intensities. Complete line lists will be obtained by combining accurate intensities with measured transition frequencies. New methodologies will be developed and implemented in computer programs to compute intensities for electronic transitions in the UV region. The results of this study will be important for a range of atmospheric studies, such as self-consistency of ozone concentration retrievals in remote sensing techniques, and possible detections of ozone in exo- planetary atmospheres. The distribution of ozone line lists will involve making them available online on databases, such as HITRAN and ExoMol, dedicated to the compilation of spectroscopic parameters. HITRAN is the standard for such data compilations for atmospheric studies and will be independently evaluating the results of this study.

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