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Published July 2012 | public
Journal Article

Fourier transform spectrometer remote sensing of O_2 A-band electric quadrupole transitions


We observed electric quadrupole transitions in the O_2 A-band, b^(1)Σ_(g)^(+)←X^(3)Σ_(g)^(−)(0,0), in high solar zenith angle atmospheric spectra recorded with the high-resolution solar-viewing Fourier transform spectrometer at Park Falls, WI. We identified 12 ΔN=±3 transitions for the first time, including the first detection of ^(N)O-branch transitions and extended the ^(T)S-branch observations of Brault [J Mol Spectrosc 1980;80:384–8] up to N″=23. Additionally, we observed six electric quadrupole transitions of the ΔN=−1 ^(P)O-branch. These observations demonstrate the excellent sensitivity and long-term stability of the new generation of solar-viewing Fourier transform spectrometers.

Additional Information

© 2012 Elsevier Ltd. Available online 9 January 2012. Part of this work was performed at the Jet Propulsion Laboratory, California Institute of Technology, under contract with NASA. TCCON funding comes from the NASA Terrestrial Ecology Program, grant number NNX11AG01G. The authors thank David Long and Geoff Toon for useful discussions.

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October 18, 2023