OH populations and temperatures from simultaneous spectroscopic observations of 25 bands

Noll, S.; Kausch, W.; Kimeswenger, S.; Unterguggenberger, S.; Jones, A. M.

doi:10.5194/acp-15-3647-2015

Articles | Volume 15, issue 7

https://doi.org/10.5194/acp-15-3647-2015

© Author(s) 2015. This work is distributed under
the Creative Commons Attribution 3.0 License.

https://doi.org/10.5194/acp-15-3647-2015

© Author(s) 2015. This work is distributed under
the Creative Commons Attribution 3.0 License.

Articles | Volume 15, issue 7

Research article

|

01 Apr 2015

Research article |

| 01 Apr 2015

OH populations and temperatures from simultaneous spectroscopic observations of 25 bands

S. Noll, W. Kausch, S. Kimeswenger, S. Unterguggenberger, and A. M. Jones

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Latest update: 08 Nov 2025

Short summary

We discuss a high-quality data set of simultaneous observations of 25 OH bands with an astronomical echelle spectrograph. These data allowed us to analyse band-dependent OH populations and temperatures. In particular, we could find different non-LTE contributions to OH rotational temperatures depending on band, line set, and observing time. This is critical for mesopause studies that use these temperatures as a proxy of the true temperatures.