Adkins, E.
, Yurchenko, S.
, Somogyi, W.
and Hodges, J.
(2025),
An Accurate Determination of O2 A-band Line Intensities through Experiment and Theory, Journal of Quantitative Spectroscopy and Radiative Transfer, [online], https://doi.org/10.1016/j.jqsrt.2025.109412, https://tsapps.nist.gov/publication/get_pdf.cfm?pub_id=959253
(Accessed June 29, 2025)
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An Accurate Determination of O2 A-band Line Intensities through Experiment and Theory
Published
Author(s)
, Sergei Yurchenko, Wilfrid Somogyi,
Abstract
Accurate intensities of the O2 A-band 〖[b〗^1 Σ_g^+⟵X^3 Σ_g^- (0,0)] centered about 760 nm are essential to reduce biases in satellite- and ground-based remote measurements of column-integrated air mass and greenhouse gas concentration. In support of these remote sensing techniques, we made cavity ring-down spectroscopy measurements of 16O2 A-band line intensities up to J = 40, and we extrapolated these values to J = 60 using scaled ab initio intensity calculations. The J dependences of the measured and theoretical intensities differ on average by less than 0.1 %. The measured intensities have relative combined standard uncertainties at the 0.15 %. Upon evaluation of the integrated intensity, we find a negative bias between literature results and this work, which is four times greater than our present uncertainty.Citation
Journal of Quantitative Spectroscopy and Radiative Transfer
Volume
338
Pub Type
Journals
Download Paper
Keywords
line intensities, remote sensing
Citation
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Created February 27, 2025, Updated June 2, 2025