Spatial sampling of the thermospheric vertical wind field at auroral latitudes
Results are presented from two nights of bistatic Doppler measurements of neutral thermospheric winds using Fabry!Perot spectrometers at Mawson and Davis stations in Antarctica. A scanning Doppler imager (SDI) at Mawson and a narrow-field Fabry-Perot spectrometer (FPS) at Davis have been used to est...
Published in: | Journal of Geophysical Research: Space Physics |
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Online Access: | https://eprints.lancs.ac.uk/id/eprint/52716/ https://eprints.lancs.ac.uk/id/eprint/52716/1/2011JA016485.pdf https://doi.org/10.1029/2011JA016485 |
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ftulancaster:oai:eprints.lancs.ac.uk:52716 2023-08-27T04:05:17+02:00 Spatial sampling of the thermospheric vertical wind field at auroral latitudes Anderson, Callum Davies, Theo Conde, Mark Dyson, Peter Kosch, Michael 2011 application/pdf https://eprints.lancs.ac.uk/id/eprint/52716/ https://eprints.lancs.ac.uk/id/eprint/52716/1/2011JA016485.pdf https://doi.org/10.1029/2011JA016485 en eng https://eprints.lancs.ac.uk/id/eprint/52716/1/2011JA016485.pdf Anderson, Callum and Davies, Theo and Conde, Mark and Dyson, Peter and Kosch, Michael (2011) Spatial sampling of the thermospheric vertical wind field at auroral latitudes. Journal of Geophysical Research, 116 (A06320). pp. 1-14. ISSN 0148-0227 Journal Article PeerReviewed 2011 ftulancaster https://doi.org/10.1029/2011JA016485 2023-08-03T22:21:46Z Results are presented from two nights of bistatic Doppler measurements of neutral thermospheric winds using Fabry!Perot spectrometers at Mawson and Davis stations in Antarctica. A scanning Doppler imager (SDI) at Mawson and a narrow-field Fabry-Perot spectrometer (FPS) at Davis have been used to estimate the vertical wind at three locations along the great circle joining the two stations, in addition to the vertical wind routinely observed above each station. These data were obtained from observations of the 630.0 nm airglow line of atomic oxygen, at a nominal altitude of 240 km. Low!resolution all-sky images produced by the Mawson SDI have been used to relate disturbances in the measured vertical wind field to auroral activity and divergence in the horizontal wind field. Correlated vertical wind responses were observed on a range of horizontal scales from ~150 to 480 km. In general, the behavior of the vertical wind was in agreement with earlier studies, with strong upward winds observed poleward of the optical aurora and sustained, though weak, downward winds observed early in the night. The relation between vertical wind and horizontal divergence was seen to follow the general trend predicted by Burnside et al. (1981), whereby upward vertical winds were associated with positive divergence and vice versa; however, a scale height approximately 3–4 times greater than that modeled by NRLMSISE-00 was required to best fit the data using this relation. Article in Journal/Newspaper Antarc* Antarctica Lancaster University: Lancaster Eprints Journal of Geophysical Research: Space Physics 116 A6 n/a n/a |
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Open Polar |
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Lancaster University: Lancaster Eprints |
op_collection_id |
ftulancaster |
language |
English |
description |
Results are presented from two nights of bistatic Doppler measurements of neutral thermospheric winds using Fabry!Perot spectrometers at Mawson and Davis stations in Antarctica. A scanning Doppler imager (SDI) at Mawson and a narrow-field Fabry-Perot spectrometer (FPS) at Davis have been used to estimate the vertical wind at three locations along the great circle joining the two stations, in addition to the vertical wind routinely observed above each station. These data were obtained from observations of the 630.0 nm airglow line of atomic oxygen, at a nominal altitude of 240 km. Low!resolution all-sky images produced by the Mawson SDI have been used to relate disturbances in the measured vertical wind field to auroral activity and divergence in the horizontal wind field. Correlated vertical wind responses were observed on a range of horizontal scales from ~150 to 480 km. In general, the behavior of the vertical wind was in agreement with earlier studies, with strong upward winds observed poleward of the optical aurora and sustained, though weak, downward winds observed early in the night. The relation between vertical wind and horizontal divergence was seen to follow the general trend predicted by Burnside et al. (1981), whereby upward vertical winds were associated with positive divergence and vice versa; however, a scale height approximately 3–4 times greater than that modeled by NRLMSISE-00 was required to best fit the data using this relation. |
format |
Article in Journal/Newspaper |
author |
Anderson, Callum Davies, Theo Conde, Mark Dyson, Peter Kosch, Michael |
spellingShingle |
Anderson, Callum Davies, Theo Conde, Mark Dyson, Peter Kosch, Michael Spatial sampling of the thermospheric vertical wind field at auroral latitudes |
author_facet |
Anderson, Callum Davies, Theo Conde, Mark Dyson, Peter Kosch, Michael |
author_sort |
Anderson, Callum |
title |
Spatial sampling of the thermospheric vertical wind field at auroral latitudes |
title_short |
Spatial sampling of the thermospheric vertical wind field at auroral latitudes |
title_full |
Spatial sampling of the thermospheric vertical wind field at auroral latitudes |
title_fullStr |
Spatial sampling of the thermospheric vertical wind field at auroral latitudes |
title_full_unstemmed |
Spatial sampling of the thermospheric vertical wind field at auroral latitudes |
title_sort |
spatial sampling of the thermospheric vertical wind field at auroral latitudes |
publishDate |
2011 |
url |
https://eprints.lancs.ac.uk/id/eprint/52716/ https://eprints.lancs.ac.uk/id/eprint/52716/1/2011JA016485.pdf https://doi.org/10.1029/2011JA016485 |
genre |
Antarc* Antarctica |
genre_facet |
Antarc* Antarctica |
op_relation |
https://eprints.lancs.ac.uk/id/eprint/52716/1/2011JA016485.pdf Anderson, Callum and Davies, Theo and Conde, Mark and Dyson, Peter and Kosch, Michael (2011) Spatial sampling of the thermospheric vertical wind field at auroral latitudes. Journal of Geophysical Research, 116 (A06320). pp. 1-14. ISSN 0148-0227 |
op_doi |
https://doi.org/10.1029/2011JA016485 |
container_title |
Journal of Geophysical Research: Space Physics |
container_volume |
116 |
container_issue |
A6 |
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n/a |
op_container_end_page |
n/a |
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1775356973682786304 |