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  Mission objectives and first results of the airglow measurement system OASIS located next to ESO's VLT in the Chilean Andes

Hannawald, P., Schmidt, C., Wüst, S., Bittner, M., Dech, S., Smette, A., Jochum, L., Kaufer, A. (2023): Mission objectives and first results of the airglow measurement system OASIS located next to ESO's VLT in the Chilean Andes, XXVIII General Assembly of the International Union of Geodesy and Geophysics (IUGG) (Berlin 2023).
https://doi.org/10.57757/IUGG23-1727

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Item Permalink: https://gfzpublic.gfz-potsdam.de/pubman/item/item_5017881 Version Permalink: https://gfzpublic.gfz-potsdam.de/pubman/item/item_5017881_2
Genre: Conference Paper

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 Creators:
Hannawald, Patrick1, Author
Schmidt, Carsten1, Author
Wüst, Sabine1, Author
Bittner, Michael1, Author
Dech, Stefan1, Author
Smette, Alain1, Author
Jochum, Lieselotte1, Author
Kaufer, Andreas1, Author
Affiliations:
1IUGG 2023, General Assemblies, 1 General, International Union of Geodesy and Geophysics (IUGG), External Organizations, ou_5011304              

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 Abstract: In November 2022 the OASIS measurement system (Observations of Airglow with Spectrometer and Imager Systems) for airglow observations was set up right next to ESO's Very Large Telescope (VLT) in Chile. It aims for observing OH nightglow with high temporal resolution in order to investigate natural hazards emitting waves (e.g. tsunamis, earthquakes, storms). Furthermore, general middle atmospheric dynamics are studied in greater detail above the Andes region, among others to develop precise methods for providing valuable near-real time data about the airglow variability for the astronomic observation scheduling of the VLT. The OASIS system consists of three airglow instruments, one spectrometer with a pan-tilt mechanism to observe selected events at any direction on the nightsky on demand, and two imager systems, an allsky camera and a narrower field-of-view camera. All three instruments have a high temporal resolution of (15s, 2s, and 1.5s, respectively) and observe the short-wave infrared part of OH nightglow around 1.5µm to 1.6µm. The good observation conditions at the astronomic site with clear sky conditions throughout the entire year give a very good data coverage allowing for unique analyses on a statistical basis as well as on specific case studies e.g. of waves emitted by natural hazard events propagating up to the mesosphere and lower thermosphere. We present the OASIS measurement system, its mission objectives, and first results from the first nine months of observations concerning general gravity wave activity above the Andes, stunning gravity wave events, and extraordinary variations of airglow intensity.

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Language(s): eng - English
 Dates: 2023
 Publication Status: Finally published
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 Rev. Type: -
 Identifiers: DOI: 10.57757/IUGG23-1727
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Title: XXVIII General Assembly of the International Union of Geodesy and Geophysics (IUGG)
Place of Event: Berlin
Start-/End Date: 2023-07-11 - 2023-07-20

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Title: XXVIII General Assembly of the International Union of Geodesy and Geophysics (IUGG)
Source Genre: Proceedings
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Publ. Info: Potsdam : GFZ German Research Centre for Geosciences
Pages: - Volume / Issue: - Sequence Number: - Start / End Page: - Identifier: -