Polar F-layer model-observation comparisons: a neutral wind surprise
International audience 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 a...
Main Authors: | , , , |
---|---|
Other Authors: | , , |
Format: | Article in Journal/Newspaper |
Language: | English |
Published: |
HAL CCSD
2005
|
Subjects: | |
Online Access: | https://hal.science/hal-00317506 https://hal.science/hal-00317506/document https://hal.science/hal-00317506/file/angeo-23-191-2005.pdf |
id |
ftinsu:oai:HAL:hal-00317506v1 |
---|---|
record_format |
openpolar |
spelling |
ftinsu:oai:HAL:hal-00317506v1 2023-11-12T04:16:36+01:00 Polar F-layer model-observation comparisons: a neutral wind surprise Sojka, J. J. David, M. Schunk, R. W. van Eyken, A. P. Center for Atmospheric and Space Sciences Logan Utah State University (USU) EISCAT Scientific Association 2005-01-31 https://hal.science/hal-00317506 https://hal.science/hal-00317506/document https://hal.science/hal-00317506/file/angeo-23-191-2005.pdf en eng HAL CCSD European Geosciences Union hal-00317506 https://hal.science/hal-00317506 https://hal.science/hal-00317506/document https://hal.science/hal-00317506/file/angeo-23-191-2005.pdf info:eu-repo/semantics/OpenAccess ISSN: 0992-7689 EISSN: 1432-0576 Annales Geophysicae https://hal.science/hal-00317506 Annales Geophysicae, 2005, 23 (1), pp.191-199 [SDU.OCEAN]Sciences of the Universe [physics]/Ocean Atmosphere [SDU.STU]Sciences of the Universe [physics]/Earth Sciences info:eu-repo/semantics/article Journal articles 2005 ftinsu 2023-10-25T16:25:15Z International audience 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 Institut national des sciences de l'Univers: HAL-INSU Longyearbyen Norway |
institution |
Open Polar |
collection |
Institut national des sciences de l'Univers: HAL-INSU |
op_collection_id |
ftinsu |
language |
English |
topic |
[SDU.OCEAN]Sciences of the Universe [physics]/Ocean Atmosphere [SDU.STU]Sciences of the Universe [physics]/Earth Sciences |
spellingShingle |
[SDU.OCEAN]Sciences of the Universe [physics]/Ocean Atmosphere [SDU.STU]Sciences of the Universe [physics]/Earth Sciences Sojka, J. J. David, M. Schunk, R. W. van Eyken, A. P. Polar F-layer model-observation comparisons: a neutral wind surprise |
topic_facet |
[SDU.OCEAN]Sciences of the Universe [physics]/Ocean Atmosphere [SDU.STU]Sciences of the Universe [physics]/Earth Sciences |
description |
International audience 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. |
author2 |
Center for Atmospheric and Space Sciences Logan Utah State University (USU) EISCAT Scientific Association |
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 |
HAL CCSD |
publishDate |
2005 |
url |
https://hal.science/hal-00317506 https://hal.science/hal-00317506/document https://hal.science/hal-00317506/file/angeo-23-191-2005.pdf |
geographic |
Longyearbyen Norway |
geographic_facet |
Longyearbyen Norway |
genre |
EISCAT Longyearbyen |
genre_facet |
EISCAT Longyearbyen |
op_source |
ISSN: 0992-7689 EISSN: 1432-0576 Annales Geophysicae https://hal.science/hal-00317506 Annales Geophysicae, 2005, 23 (1), pp.191-199 |
op_relation |
hal-00317506 https://hal.science/hal-00317506 https://hal.science/hal-00317506/document https://hal.science/hal-00317506/file/angeo-23-191-2005.pdf |
op_rights |
info:eu-repo/semantics/OpenAccess |
_version_ |
1782333689772900352 |