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  12 years of observations of wind and airglow brightness in the northern polar cap mesopause region

Ward, W., Kristoffersen, S., Gamblin, D., Roberts, H. (2023): 12 years of observations of wind and airglow brightness in the northern polar cap mesopause region, XXVIII General Assembly of the International Union of Geodesy and Geophysics (IUGG) (Berlin 2023).
https://doi.org/10.57757/IUGG23-4254

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Item Permalink: https://gfzpublic.gfz-potsdam.de/pubman/item/item_5021691 Version Permalink: https://gfzpublic.gfz-potsdam.de/pubman/item/item_5021691_1
Genre: Conference Paper

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 Creators:
Ward, William1, Author
Kristoffersen, Samuel1, Author
Gamblin, Dustin1, Author
Roberts, Hannah1, Author
Affiliations:
1IUGG 2023, General Assemblies, 1 General, International Union of Geodesy and Geophysics (IUGG), External Organizations, ou_5011304              

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 Abstract: Observations of wind and airglow brightness in the northern polar cap mesopause region using an all-sky imager (irradiance images) and a field-widened Michelson interferometer (E-Region Wind Interferometer (ERWIN) - wind and irradiance) have taken place at the Polar Environment Atmospheric Research Laboratory (PEARL – Eureka, Nu, 80 N) since 2008. These observations provide insights into solar cycle, seasonal and diurnal variations in airglow brightness and winds. The sodium and oxygen green line airglow brightness correlates strongly with the solar cycle in spite of the observation site being in polar night. The brightness varies strongly during the winter months with several peaks. The cause of this variability is not obvious. The seasonally average meridional winds are generally southward (northward would be expected based on the residual circulation) over the 12 years with maximum southward amplitudes of ~ 10 m/s in the 2014/2016 period. Seasonally averaged zonal winds are generally eastward. The monthly mean zonal winds maximize in January at 10 m/s. The monthly mean meridional winds do not vary strongly during the winter season.

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Language(s): eng - English
 Dates: 2023-07-112023-07-11
 Publication Status: Finally published
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 Identifiers: DOI: 10.57757/IUGG23-4254
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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
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