Polar F-layer model-observation comparisons: a neutral wind surprise
The existence of a month-long continuous database of incoherent scatter radar observations of the ionosphere from the EISCAT Savlbard Radar (ESR) at Longyearbyen, Norway, provides an unprecedented opportunity for model/data comparisons. Physics-based ionospheric models, such as the Utah State Univer...
Published in: | Annales Geophysicae |
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Language: | English |
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Online Access: | https://doi.org/10.5194/angeo-23-191-2005 https://noa.gwlb.de/receive/cop_mods_00034408 https://noa.gwlb.de/servlets/MCRFileNodeServlet/cop_derivate_00034362/angeo-23-191-2005.pdf https://angeo.copernicus.org/articles/23/191/2005/angeo-23-191-2005.pdf |
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ftnonlinearchiv:oai:noa.gwlb.de:cop_mods_00034408 2023-05-15T16:04:42+02:00 Polar F-layer model-observation comparisons: a neutral wind surprise Sojka, J. J. David, M. Schunk, R. W. van Eyken, A. P. 2005-01 electronic https://doi.org/10.5194/angeo-23-191-2005 https://noa.gwlb.de/receive/cop_mods_00034408 https://noa.gwlb.de/servlets/MCRFileNodeServlet/cop_derivate_00034362/angeo-23-191-2005.pdf https://angeo.copernicus.org/articles/23/191/2005/angeo-23-191-2005.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-23-191-2005 https://noa.gwlb.de/receive/cop_mods_00034408 https://noa.gwlb.de/servlets/MCRFileNodeServlet/cop_derivate_00034362/angeo-23-191-2005.pdf https://angeo.copernicus.org/articles/23/191/2005/angeo-23-191-2005.pdf uneingeschränkt info:eu-repo/semantics/openAccess article Verlagsveröffentlichung article Text doc-type:article 2005 ftnonlinearchiv https://doi.org/10.5194/angeo-23-191-2005 2022-02-08T22:45:14Z The existence of a month-long continuous database of incoherent scatter radar observations of the ionosphere from the EISCAT Savlbard Radar (ESR) at Longyearbyen, Norway, provides an unprecedented opportunity for model/data comparisons. Physics-based ionospheric models, such as the Utah State University Time Dependent Ionospheric Model (TDIM), are usually only compared with observations over restricted one or two day events or against climatological averages. In this study, using the ESR observations, the daily weather, day-to-day variability, and month-long climatology can be simultaneously addressed to identify modeling shortcomings and successes. Since for this study the TDIM is driven by climatological representations of the magnetospheric convection, auroral oval, neutral atmosphere, and neutral winds, whose inputs are solar and geomagnetic indices, it is not surprising that the daily weather cannot be reproduced. What is unexpected is that the horizontal neutral wind has come to the forefront as a decisive model input parameter in matching the diurnal morphology of density structuring seen in the observations. Article in Journal/Newspaper EISCAT Longyearbyen Niedersächsisches Online-Archiv NOA Longyearbyen Norway Annales Geophysicae 23 1 191 199 |
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Open Polar |
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Niedersächsisches Online-Archiv NOA |
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ftnonlinearchiv |
language |
English |
topic |
article Verlagsveröffentlichung |
spellingShingle |
article Verlagsveröffentlichung Sojka, J. J. David, M. Schunk, R. W. van Eyken, A. P. Polar F-layer model-observation comparisons: a neutral wind surprise |
topic_facet |
article Verlagsveröffentlichung |
description |
The existence of a month-long continuous database of incoherent scatter radar observations of the ionosphere from the EISCAT Savlbard Radar (ESR) at Longyearbyen, Norway, provides an unprecedented opportunity for model/data comparisons. Physics-based ionospheric models, such as the Utah State University Time Dependent Ionospheric Model (TDIM), are usually only compared with observations over restricted one or two day events or against climatological averages. In this study, using the ESR observations, the daily weather, day-to-day variability, and month-long climatology can be simultaneously addressed to identify modeling shortcomings and successes. Since for this study the TDIM is driven by climatological representations of the magnetospheric convection, auroral oval, neutral atmosphere, and neutral winds, whose inputs are solar and geomagnetic indices, it is not surprising that the daily weather cannot be reproduced. What is unexpected is that the horizontal neutral wind has come to the forefront as a decisive model input parameter in matching the diurnal morphology of density structuring seen in the observations. |
format |
Article in Journal/Newspaper |
author |
Sojka, J. J. David, M. Schunk, R. W. van Eyken, A. P. |
author_facet |
Sojka, J. J. David, M. Schunk, R. W. van Eyken, A. P. |
author_sort |
Sojka, J. J. |
title |
Polar F-layer model-observation comparisons: a neutral wind surprise |
title_short |
Polar F-layer model-observation comparisons: a neutral wind surprise |
title_full |
Polar F-layer model-observation comparisons: a neutral wind surprise |
title_fullStr |
Polar F-layer model-observation comparisons: a neutral wind surprise |
title_full_unstemmed |
Polar F-layer model-observation comparisons: a neutral wind surprise |
title_sort |
polar f-layer model-observation comparisons: a neutral wind surprise |
publisher |
Copernicus Publications |
publishDate |
2005 |
url |
https://doi.org/10.5194/angeo-23-191-2005 https://noa.gwlb.de/receive/cop_mods_00034408 https://noa.gwlb.de/servlets/MCRFileNodeServlet/cop_derivate_00034362/angeo-23-191-2005.pdf https://angeo.copernicus.org/articles/23/191/2005/angeo-23-191-2005.pdf |
geographic |
Longyearbyen Norway |
geographic_facet |
Longyearbyen Norway |
genre |
EISCAT Longyearbyen |
genre_facet |
EISCAT Longyearbyen |
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-23-191-2005 https://noa.gwlb.de/receive/cop_mods_00034408 https://noa.gwlb.de/servlets/MCRFileNodeServlet/cop_derivate_00034362/angeo-23-191-2005.pdf https://angeo.copernicus.org/articles/23/191/2005/angeo-23-191-2005.pdf |
op_rights |
uneingeschränkt info:eu-repo/semantics/openAccess |
op_doi |
https://doi.org/10.5194/angeo-23-191-2005 |
container_title |
Annales Geophysicae |
container_volume |
23 |
container_issue |
1 |
container_start_page |
191 |
op_container_end_page |
199 |
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1766400312910807040 |