On the global distribution of sporadic sodium layers
Limb-scanning measurements of the dayglow radiance at 589 nm, made with the OSIRIS spectrometer on the Odin satellite, are used to retrieve Na layer profiles with sufficient vertical resolution (∼2 km) to observe sporadic Na layers (SSLs). A two-year data base (2003–2004) has been analyzed to determ...
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Online Access: | https://ueaeprints.uea.ac.uk/id/eprint/25062/ https://doi.org/10.1029/2007GL030542 |
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ftuniveastangl:oai:ueaeprints.uea.ac.uk:25062 2023-05-15T13:53:02+02:00 On the global distribution of sporadic sodium layers Fan, ZY Plane, JMC Gumbel, J 2007-08 https://ueaeprints.uea.ac.uk/id/eprint/25062/ https://doi.org/10.1029/2007GL030542 unknown Fan, ZY, Plane, JMC and Gumbel, J (2007) On the global distribution of sporadic sodium layers. Geophysical Research Letters, 34 (15). ISSN 1944-8007 doi:10.1029/2007GL030542 Article PeerReviewed 2007 ftuniveastangl https://doi.org/10.1029/2007GL030542 2023-01-30T21:26:35Z Limb-scanning measurements of the dayglow radiance at 589 nm, made with the OSIRIS spectrometer on the Odin satellite, are used to retrieve Na layer profiles with sufficient vertical resolution (∼2 km) to observe sporadic Na layers (SSLs). A two-year data base (2003–2004) has been analyzed to determine the global distribution of the SSL occurrence frequency (at 0600 and 1800 hrs local time). This shows that SSLs are much more prevalent in the southern hemisphere, with a particularly active region extending from South America at latitudes greater than 40°S to the Antarctic peninsula. The global average SSL occurrence frequency is about 5%. By analyzing the occurrence of SSLs in successive limb scans, it appears that most SSLs have a horizontal extent of less than ∼300 km. However, on one occasion during this 2-year study, two apparently very large SSLs, extending about 70° in latitude, were observed. Article in Journal/Newspaper Antarc* Antarctic Antarctic Peninsula University of East Anglia: UEA Digital Repository Antarctic Antarctic Peninsula The Antarctic Geophysical Research Letters 34 15 |
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Open Polar |
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University of East Anglia: UEA Digital Repository |
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ftuniveastangl |
language |
unknown |
description |
Limb-scanning measurements of the dayglow radiance at 589 nm, made with the OSIRIS spectrometer on the Odin satellite, are used to retrieve Na layer profiles with sufficient vertical resolution (∼2 km) to observe sporadic Na layers (SSLs). A two-year data base (2003–2004) has been analyzed to determine the global distribution of the SSL occurrence frequency (at 0600 and 1800 hrs local time). This shows that SSLs are much more prevalent in the southern hemisphere, with a particularly active region extending from South America at latitudes greater than 40°S to the Antarctic peninsula. The global average SSL occurrence frequency is about 5%. By analyzing the occurrence of SSLs in successive limb scans, it appears that most SSLs have a horizontal extent of less than ∼300 km. However, on one occasion during this 2-year study, two apparently very large SSLs, extending about 70° in latitude, were observed. |
format |
Article in Journal/Newspaper |
author |
Fan, ZY Plane, JMC Gumbel, J |
spellingShingle |
Fan, ZY Plane, JMC Gumbel, J On the global distribution of sporadic sodium layers |
author_facet |
Fan, ZY Plane, JMC Gumbel, J |
author_sort |
Fan, ZY |
title |
On the global distribution of sporadic sodium layers |
title_short |
On the global distribution of sporadic sodium layers |
title_full |
On the global distribution of sporadic sodium layers |
title_fullStr |
On the global distribution of sporadic sodium layers |
title_full_unstemmed |
On the global distribution of sporadic sodium layers |
title_sort |
on the global distribution of sporadic sodium layers |
publishDate |
2007 |
url |
https://ueaeprints.uea.ac.uk/id/eprint/25062/ https://doi.org/10.1029/2007GL030542 |
geographic |
Antarctic Antarctic Peninsula The Antarctic |
geographic_facet |
Antarctic Antarctic Peninsula The Antarctic |
genre |
Antarc* Antarctic Antarctic Peninsula |
genre_facet |
Antarc* Antarctic Antarctic Peninsula |
op_relation |
Fan, ZY, Plane, JMC and Gumbel, J (2007) On the global distribution of sporadic sodium layers. Geophysical Research Letters, 34 (15). ISSN 1944-8007 doi:10.1029/2007GL030542 |
op_doi |
https://doi.org/10.1029/2007GL030542 |
container_title |
Geophysical Research Letters |
container_volume |
34 |
container_issue |
15 |
_version_ |
1766257986994438144 |