OH(6-2) spectra and rotational temperature measurements at Davis, Antarctica
The OH(6-2) band was monitored during 1990 at Davis, Antarctica (68.6 ° S, 78.0 ° E) using a Czerny-Turner scanning spectrometer. Spectra obtained with a 0.15-nm bandwidth and wavelength steps of 0.005 nm have been recorded in an attempt to isolate auroral features. This has enabled detailed study o...
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ftdoajarticles:oai:doaj.org/article:49aae49b01eb4221834f384bf5d686ef 2023-05-15T13:56:49+02:00 OH(6-2) spectra and rotational temperature measurements at Davis, Antarctica P. A. Greet W. J. R. French G. B. Burns P. F. B. Williams R. P. Lowe K. Finlayson 1998-01-01T00:00:00Z https://doi.org/10.1007/s00585-997-0077-3 https://doaj.org/article/49aae49b01eb4221834f384bf5d686ef EN eng Copernicus Publications https://www.ann-geophys.net/16/77/1998/angeo-16-77-1998.pdf https://doaj.org/toc/0992-7689 https://doaj.org/toc/1432-0576 doi:10.1007/s00585-997-0077-3 0992-7689 1432-0576 https://doaj.org/article/49aae49b01eb4221834f384bf5d686ef Annales Geophysicae, Vol 16, Pp 77-89 (1998) Science Q Physics QC1-999 Geophysics. Cosmic physics QC801-809 article 1998 ftdoajarticles https://doi.org/10.1007/s00585-997-0077-3 2022-12-31T04:43:07Z The OH(6-2) band was monitored during 1990 at Davis, Antarctica (68.6 ° S, 78.0 ° E) using a Czerny-Turner scanning spectrometer. Spectra obtained with a 0.15-nm bandwidth and wavelength steps of 0.005 nm have been recorded in an attempt to isolate auroral features. This has enabled detailed study of weak features in the region λ 837.5–855.5 nm. These weak features can contribute to the apparent intensity of P-branch lines and to the background. Their presence is allowed for in our calculation of rotational temperature, but the P 1 (3) line is excluded because of significant contamination. An average temperature of 221±2 K is obtained from a selected data set of 104 spectra. The mid-winter average temperature, for the months of May, June and July, is 224±2 K, which is consistent with the 1986 CIRA model values for mid-winter at this height and latitude, but this result is dependent on the choice of transition probabilities. Preliminary assessments of seasonal and diurnal variations in rotational temperature and intensity are presented. Key words. Atmospheric composition and structure · Airglow and aurora; Middle-atmosphere composition and chemistry · Pressure · density and temperature Article in Journal/Newspaper Antarc* Antarctica Directory of Open Access Journals: DOAJ Articles Annales Geophysicae 16 1 77 89 |
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Open Polar |
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Directory of Open Access Journals: DOAJ Articles |
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English |
topic |
Science Q Physics QC1-999 Geophysics. Cosmic physics QC801-809 |
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Science Q Physics QC1-999 Geophysics. Cosmic physics QC801-809 P. A. Greet W. J. R. French G. B. Burns P. F. B. Williams R. P. Lowe K. Finlayson OH(6-2) spectra and rotational temperature measurements at Davis, Antarctica |
topic_facet |
Science Q Physics QC1-999 Geophysics. Cosmic physics QC801-809 |
description |
The OH(6-2) band was monitored during 1990 at Davis, Antarctica (68.6 ° S, 78.0 ° E) using a Czerny-Turner scanning spectrometer. Spectra obtained with a 0.15-nm bandwidth and wavelength steps of 0.005 nm have been recorded in an attempt to isolate auroral features. This has enabled detailed study of weak features in the region λ 837.5–855.5 nm. These weak features can contribute to the apparent intensity of P-branch lines and to the background. Their presence is allowed for in our calculation of rotational temperature, but the P 1 (3) line is excluded because of significant contamination. An average temperature of 221±2 K is obtained from a selected data set of 104 spectra. The mid-winter average temperature, for the months of May, June and July, is 224±2 K, which is consistent with the 1986 CIRA model values for mid-winter at this height and latitude, but this result is dependent on the choice of transition probabilities. Preliminary assessments of seasonal and diurnal variations in rotational temperature and intensity are presented. Key words. Atmospheric composition and structure · Airglow and aurora; Middle-atmosphere composition and chemistry · Pressure · density and temperature |
format |
Article in Journal/Newspaper |
author |
P. A. Greet W. J. R. French G. B. Burns P. F. B. Williams R. P. Lowe K. Finlayson |
author_facet |
P. A. Greet W. J. R. French G. B. Burns P. F. B. Williams R. P. Lowe K. Finlayson |
author_sort |
P. A. Greet |
title |
OH(6-2) spectra and rotational temperature measurements at Davis, Antarctica |
title_short |
OH(6-2) spectra and rotational temperature measurements at Davis, Antarctica |
title_full |
OH(6-2) spectra and rotational temperature measurements at Davis, Antarctica |
title_fullStr |
OH(6-2) spectra and rotational temperature measurements at Davis, Antarctica |
title_full_unstemmed |
OH(6-2) spectra and rotational temperature measurements at Davis, Antarctica |
title_sort |
oh(6-2) spectra and rotational temperature measurements at davis, antarctica |
publisher |
Copernicus Publications |
publishDate |
1998 |
url |
https://doi.org/10.1007/s00585-997-0077-3 https://doaj.org/article/49aae49b01eb4221834f384bf5d686ef |
genre |
Antarc* Antarctica |
genre_facet |
Antarc* Antarctica |
op_source |
Annales Geophysicae, Vol 16, Pp 77-89 (1998) |
op_relation |
https://www.ann-geophys.net/16/77/1998/angeo-16-77-1998.pdf https://doaj.org/toc/0992-7689 https://doaj.org/toc/1432-0576 doi:10.1007/s00585-997-0077-3 0992-7689 1432-0576 https://doaj.org/article/49aae49b01eb4221834f384bf5d686ef |
op_doi |
https://doi.org/10.1007/s00585-997-0077-3 |
container_title |
Annales Geophysicae |
container_volume |
16 |
container_issue |
1 |
container_start_page |
77 |
op_container_end_page |
89 |
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1766264405710864384 |