12 years of observations of wind and airglow brightness in the northern polar cap mesopause region
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...
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2023
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ftgfzpotsdam:oai:gfzpublic.gfz-potsdam.de:item_5021691 2023-07-30T04:06:28+02:00 12 years of observations of wind and airglow brightness in the northern polar cap mesopause region Ward, W. Kristoffersen, S. Gamblin, D. Roberts, H. 2023-07-11 https://gfzpublic.gfz-potsdam.de/pubman/item/item_5021691 eng eng info:eu-repo/semantics/altIdentifier/doi/10.57757/IUGG23-4254 https://gfzpublic.gfz-potsdam.de/pubman/item/item_5021691 XXVIII General Assembly of the International Union of Geodesy and Geophysics (IUGG) info:eu-repo/semantics/conferenceObject 2023 ftgfzpotsdam https://doi.org/10.57757/IUGG23-4254 2023-07-16T23:40:25Z 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. Conference Object polar night GFZpublic (German Research Centre for Geosciences, Helmholtz-Zentrum Potsdam) Eureka ENVELOPE(-85.940,-85.940,79.990,79.990) |
institution |
Open Polar |
collection |
GFZpublic (German Research Centre for Geosciences, Helmholtz-Zentrum Potsdam) |
op_collection_id |
ftgfzpotsdam |
language |
English |
description |
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. |
format |
Conference Object |
author |
Ward, W. Kristoffersen, S. Gamblin, D. Roberts, H. |
spellingShingle |
Ward, W. Kristoffersen, S. Gamblin, D. Roberts, H. 12 years of observations of wind and airglow brightness in the northern polar cap mesopause region |
author_facet |
Ward, W. Kristoffersen, S. Gamblin, D. Roberts, H. |
author_sort |
Ward, W. |
title |
12 years of observations of wind and airglow brightness in the northern polar cap mesopause region |
title_short |
12 years of observations of wind and airglow brightness in the northern polar cap mesopause region |
title_full |
12 years of observations of wind and airglow brightness in the northern polar cap mesopause region |
title_fullStr |
12 years of observations of wind and airglow brightness in the northern polar cap mesopause region |
title_full_unstemmed |
12 years of observations of wind and airglow brightness in the northern polar cap mesopause region |
title_sort |
12 years of observations of wind and airglow brightness in the northern polar cap mesopause region |
publishDate |
2023 |
url |
https://gfzpublic.gfz-potsdam.de/pubman/item/item_5021691 |
long_lat |
ENVELOPE(-85.940,-85.940,79.990,79.990) |
geographic |
Eureka |
geographic_facet |
Eureka |
genre |
polar night |
genre_facet |
polar night |
op_source |
XXVIII General Assembly of the International Union of Geodesy and Geophysics (IUGG) |
op_relation |
info:eu-repo/semantics/altIdentifier/doi/10.57757/IUGG23-4254 https://gfzpublic.gfz-potsdam.de/pubman/item/item_5021691 |
op_doi |
https://doi.org/10.57757/IUGG23-4254 |
_version_ |
1772819074092367872 |