The red sky enigma over Svalbard in December 2002: a model using polar stratospheric clouds
An anomalous red glow due to scattered sunlight was observed at Longyearbyen (78° N, 15° E) on 6 December 2002 from 07:30 UT to 13:30 UT when the solar zenith angle varied between 100.7° and 104°. A model for this red sky event using sunlight scattered in a two stage process by Polar Stratospheric C...
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ftnonlinearchiv:oai:noa.gwlb.de:cop_mods_00034032 2023-05-15T17:08:27+02:00 The red sky enigma over Svalbard in December 2002: a model using polar stratospheric clouds Lloyd, N. D. Degenstein, D. A. Sigernes, F. Llewellyn, E. J. Lorentzen, D. A. 2005-07 electronic https://doi.org/10.5194/angeo-23-1603-2005 https://noa.gwlb.de/receive/cop_mods_00034032 https://noa.gwlb.de/servlets/MCRFileNodeServlet/cop_derivate_00033986/angeo-23-1603-2005.pdf https://angeo.copernicus.org/articles/23/1603/2005/angeo-23-1603-2005.pdf eng eng Copernicus Publications Annales Geophysicae -- http://www.bibliothek.uni-regensburg.de/ezeit/?1458425 -- https://www.ann-geophys.net/ -- https://www.ann-geophys.net/volumes.html -- http://link.springer.com/journal/585 -- 1432-0576 https://doi.org/10.5194/angeo-23-1603-2005 https://noa.gwlb.de/receive/cop_mods_00034032 https://noa.gwlb.de/servlets/MCRFileNodeServlet/cop_derivate_00033986/angeo-23-1603-2005.pdf https://angeo.copernicus.org/articles/23/1603/2005/angeo-23-1603-2005.pdf uneingeschränkt info:eu-repo/semantics/openAccess article Verlagsveröffentlichung article Text doc-type:article 2005 ftnonlinearchiv https://doi.org/10.5194/angeo-23-1603-2005 2022-02-08T22:45:27Z An anomalous red glow due to scattered sunlight was observed at Longyearbyen (78° N, 15° E) on 6 December 2002 from 07:30 UT to 13:30 UT when the solar zenith angle varied between 100.7° and 104°. A model for this red sky event using sunlight scattered in a two stage process by Polar Stratospheric Clouds (PSC) at 25km is presented and demonstrated to be feasible. The model requires a significant fraction of the polar vortex, which is cold enough for the formation of ice PSC, to be occupied with PSC with an integrated vertical extinction of approximately 0.037 at 845nm. Given these conditions, the model is able to predict, within an order of magnitude, the spatial distribution of intensities measured by meridional scanning photometers located at Longyearbyen across the visible and near infra-red spectrum. Keywords. Aerosols and particles; Transmission and scattering of radiation; Polar Meteorology Article in Journal/Newspaper Longyearbyen Svalbard Niedersächsisches Online-Archiv NOA Longyearbyen Svalbard Annales Geophysicae 23 5 1603 1610 |
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English |
topic |
article Verlagsveröffentlichung |
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article Verlagsveröffentlichung Lloyd, N. D. Degenstein, D. A. Sigernes, F. Llewellyn, E. J. Lorentzen, D. A. The red sky enigma over Svalbard in December 2002: a model using polar stratospheric clouds |
topic_facet |
article Verlagsveröffentlichung |
description |
An anomalous red glow due to scattered sunlight was observed at Longyearbyen (78° N, 15° E) on 6 December 2002 from 07:30 UT to 13:30 UT when the solar zenith angle varied between 100.7° and 104°. A model for this red sky event using sunlight scattered in a two stage process by Polar Stratospheric Clouds (PSC) at 25km is presented and demonstrated to be feasible. The model requires a significant fraction of the polar vortex, which is cold enough for the formation of ice PSC, to be occupied with PSC with an integrated vertical extinction of approximately 0.037 at 845nm. Given these conditions, the model is able to predict, within an order of magnitude, the spatial distribution of intensities measured by meridional scanning photometers located at Longyearbyen across the visible and near infra-red spectrum. Keywords. Aerosols and particles; Transmission and scattering of radiation; Polar Meteorology |
format |
Article in Journal/Newspaper |
author |
Lloyd, N. D. Degenstein, D. A. Sigernes, F. Llewellyn, E. J. Lorentzen, D. A. |
author_facet |
Lloyd, N. D. Degenstein, D. A. Sigernes, F. Llewellyn, E. J. Lorentzen, D. A. |
author_sort |
Lloyd, N. D. |
title |
The red sky enigma over Svalbard in December 2002: a model using polar stratospheric clouds |
title_short |
The red sky enigma over Svalbard in December 2002: a model using polar stratospheric clouds |
title_full |
The red sky enigma over Svalbard in December 2002: a model using polar stratospheric clouds |
title_fullStr |
The red sky enigma over Svalbard in December 2002: a model using polar stratospheric clouds |
title_full_unstemmed |
The red sky enigma over Svalbard in December 2002: a model using polar stratospheric clouds |
title_sort |
red sky enigma over svalbard in december 2002: a model using polar stratospheric clouds |
publisher |
Copernicus Publications |
publishDate |
2005 |
url |
https://doi.org/10.5194/angeo-23-1603-2005 https://noa.gwlb.de/receive/cop_mods_00034032 https://noa.gwlb.de/servlets/MCRFileNodeServlet/cop_derivate_00033986/angeo-23-1603-2005.pdf https://angeo.copernicus.org/articles/23/1603/2005/angeo-23-1603-2005.pdf |
geographic |
Longyearbyen Svalbard |
geographic_facet |
Longyearbyen Svalbard |
genre |
Longyearbyen Svalbard |
genre_facet |
Longyearbyen Svalbard |
op_relation |
Annales Geophysicae -- http://www.bibliothek.uni-regensburg.de/ezeit/?1458425 -- https://www.ann-geophys.net/ -- https://www.ann-geophys.net/volumes.html -- http://link.springer.com/journal/585 -- 1432-0576 https://doi.org/10.5194/angeo-23-1603-2005 https://noa.gwlb.de/receive/cop_mods_00034032 https://noa.gwlb.de/servlets/MCRFileNodeServlet/cop_derivate_00033986/angeo-23-1603-2005.pdf https://angeo.copernicus.org/articles/23/1603/2005/angeo-23-1603-2005.pdf |
op_rights |
uneingeschränkt info:eu-repo/semantics/openAccess |
op_doi |
https://doi.org/10.5194/angeo-23-1603-2005 |
container_title |
Annales Geophysicae |
container_volume |
23 |
container_issue |
5 |
container_start_page |
1603 |
op_container_end_page |
1610 |
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1766064224370425856 |