Articles | Volume 17, issue 14
https://doi.org/10.5194/amt-17-4507-2024
https://doi.org/10.5194/amt-17-4507-2024
Research article
 | 
29 Jul 2024
Research article |  | 29 Jul 2024

A novel, balloon-borne UV–Vis spectrometer for direct sun measurements of stratospheric bromine

Karolin Voss, Philip Holzbeck, Klaus Pfeilsticker, Ralph Kleinschek, Gerald Wetzel, Blanca Fuentes Andrade, Michael Höpfner, Jörn Ungermann, Björn-Martin Sinnhuber, and André Butz

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This preprint is open for discussion and under review for Atmospheric Measurement Techniques (AMT).
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Cited articles

Aliwell, S. R., Van Roozendael, M., Johnston, P. V., Richter, A., Wagner, T., Arlander, D. W., Burrows, J. P., Fish, D. J., Jones, R. L., Tørnkvist, K. K., Lambert, J.-C., Pfeilsticker, K., and Pundt, I.: Analysis for BrO in zenith-sky spectra: An intercomparison exercise for analysis improvement, J. Geophys. Res.-Atmos., 107, ACH 10-1–ACH 10-20, https://doi.org/10.1029/2001JD000329, 2002. a, b
Belotti, C., Barbara, F., Barucci, M., Bianchini, G., D'Amato, F., Del Bianco, S., Di Natale, G., Gai, M., Montori, A., Pratesi, F., Rettinger, M., Rolf, C., Sussmann, R., Trickl, T., Viciani, S., Vogelmann, H., and Palchetti, L.: The Far-Infrared Radiation Mobile Observation System (FIRMOS) for spectral characterization of the atmospheric emission, Atmos. Meas. Tech., 16, 2511–2529, https://doi.org/10.5194/amt-16-2511-2023, 2023. a
Bösch, H., Camy-Peyret, C., Chipperfield, M. P., Fitzenberger, R., Harder, H., Schiller, C., Schneider, M., Trautmann, T., and Pfeilsticker, K.: Comparison of measured and modeled startospheric UV/visible actinic fluxes at large solar zenith angles, Geophys. Res. Lett., 28, 1179–1182, 2001. a, b, c
Bösch, H., Camy-Peyret, C., Chipperfield, M. P., Fitzenberger, R., Harder, H., U., P., and Pfeilsticker, K.: Upper limits of stratospheric IO and OIO inferred from center-to-limb-darkening-corrected balloon-borne solar occultation visible spectra: Implications for total gaseous iodine and stratospheric ozone, J. Geophys. Res., 108, 4455, https://doi.org/10.1029/2002JD003078, 2003. a
Brune, W. H., Anderson, J. G., and Chan, K. R.: In situ observations of BrO over Antarctica: ER-2 aircraft results from 54° S to 72° S latitude, J. Geophys. Res., 94, 16649–16663, 1989. a
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Short summary
A novel balloon-borne instrument for direct sun and solar occultation measurements of several UV–Vis absorbing gases (e.g. O3, NO2, BrO, IO, and HONO) is described. Its major design features and performance during two stratospheric deployments are discussed. From the measured overhead BrO concentration and a suitable photochemical correction, total stratospheric bromine is inferred to (17.5 ± 2.2) ppt in air masses which entered the stratosphere around early 2017 ± 1 year.
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