Inferring neutral winds in the ionospheric transition region from atmospheric-gravity-wave traveling-ionospheric-disturbance (AGW-TID) observations with the EISCAT VHF radar and the Nordic Meteor Radar Cluster
<p>Atmospheric gravity waves and traveling ionospheric disturbances can be observed in the neutral atmosphere and the ionosphere at a wide range of spatial and temporal scales. Especially at medium scales, these oscillations are often not resolved in general circulation models and are paramete...
| Main Authors: | , , , , , , , , , , , , , , , |
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| Format: | Article |
| Language: | English |
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Copernicus Publications
2023-10-01
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| Series: | Annales Geophysicae |
| Online Access: | https://angeo.copernicus.org/articles/41/409/2023/angeo-41-409-2023.pdf |
| _version_ | 1797657322589257728 |
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| author | F. Günzkofer D. Pokhotelov G. Stober I. Mann S. L. Vadas E. Becker A. Tjulin A. Kozlovsky M. Tsutsumi M. Tsutsumi N. Gulbrandsen S. Nozawa M. Lester E. Belova J. Kero N. J. Mitchell N. J. Mitchell C. Borries |
| author_facet | F. Günzkofer D. Pokhotelov G. Stober I. Mann S. L. Vadas E. Becker A. Tjulin A. Kozlovsky M. Tsutsumi M. Tsutsumi N. Gulbrandsen S. Nozawa M. Lester E. Belova J. Kero N. J. Mitchell N. J. Mitchell C. Borries |
| author_sort | F. Günzkofer |
| collection | DOAJ |
| description | <p>Atmospheric gravity waves and traveling ionospheric disturbances can be observed in the neutral atmosphere and the ionosphere at a wide range of spatial and temporal scales. Especially at medium scales, these oscillations are often not resolved in general circulation models and are parameterized. We show that ionospheric disturbances forced by upward-propagating atmospheric gravity waves can be simultaneously observed with the EISCAT very high frequency incoherent scatter radar and the Nordic Meteor Radar Cluster. From combined multi-static measurements, both vertical and horizontal wave parameters can be determined by applying a specially developed Fourier filter analysis method. This method is demonstrated using the example of a strongly pronounced wave mode that occurred during the EISCAT experiment on 7 July 2020. Leveraging the developed technique, we show that the wave characteristics of traveling ionospheric disturbances are notably impacted by the fall transition of the mesosphere and lower thermosphere. We also demonstrate the application of using the determined wave parameters to infer the thermospheric neutral wind velocities. Applying the dissipative anelastic gravity wave dispersion relation, we obtain vertical wind profiles in the lower thermosphere.</p> |
| first_indexed | 2024-03-11T17:42:49Z |
| format | Article |
| id | doaj.art-5c240cdb84054ff4b505d9fd335918ba |
| institution | Directory Open Access Journal |
| issn | 0992-7689 1432-0576 |
| language | English |
| last_indexed | 2024-03-11T17:42:49Z |
| publishDate | 2023-10-01 |
| publisher | Copernicus Publications |
| record_format | Article |
| series | Annales Geophysicae |
| spelling | doaj.art-5c240cdb84054ff4b505d9fd335918ba2023-10-18T09:04:17ZengCopernicus PublicationsAnnales Geophysicae0992-76891432-05762023-10-014140942810.5194/angeo-41-409-2023Inferring neutral winds in the ionospheric transition region from atmospheric-gravity-wave traveling-ionospheric-disturbance (AGW-TID) observations with the EISCAT VHF radar and the Nordic Meteor Radar ClusterF. Günzkofer0D. Pokhotelov1G. Stober2I. Mann3S. L. Vadas4E. Becker5A. Tjulin6A. Kozlovsky7M. Tsutsumi8M. Tsutsumi9N. Gulbrandsen10S. Nozawa11M. Lester12E. Belova13J. Kero14N. J. Mitchell15N. J. Mitchell16C. Borries17Institute for Solar-Terrestrial Physics, German Aerospace Center (DLR), Neustrelitz, GermanyInstitute of Physics, University of Greifswald, Greifswald, GermanyInstitute of Applied Physics and Oeschger Center for Climate Change Research, Microwave Physics, University of Bern, Bern, SwitzerlandInstitute of Physics and Technology, UiT The Arctic University of Norway, Tromsø, NorwayNorth West Research Associates (NWRA), Boulder, Colorado, USANorth West Research Associates (NWRA), Boulder, Colorado, USAEISCAT Scientific Association, Kiruna, SwedenSodankylä Geophysical Observatory, University of Oulu, Oulu, FinlandNational Institute of Polar Research, Tachikawa, JapanThe Graduate University for Advanced Studies (SOKENDAI), Tokyo, JapanTromsø Geophysical Observatory, UiT The Arctic University of Norway, Tromsø, NorwayInstitute for Space-Earth Environmental Research, Nagoya University, Nagoya, JapanDepartment of Physics & Astronomy, University of Leicester, Leicester, UKSwedish Institute of Space Physics (IRF), Kiruna, SwedenSwedish Institute of Space Physics (IRF), Kiruna, SwedenBritish Antarctic Survey, Cambridge, UKDepartment of Electronic & Electrical Engineering, University of Bath, Bath, UKInstitute for Solar-Terrestrial Physics, German Aerospace Center (DLR), Neustrelitz, Germany<p>Atmospheric gravity waves and traveling ionospheric disturbances can be observed in the neutral atmosphere and the ionosphere at a wide range of spatial and temporal scales. Especially at medium scales, these oscillations are often not resolved in general circulation models and are parameterized. We show that ionospheric disturbances forced by upward-propagating atmospheric gravity waves can be simultaneously observed with the EISCAT very high frequency incoherent scatter radar and the Nordic Meteor Radar Cluster. From combined multi-static measurements, both vertical and horizontal wave parameters can be determined by applying a specially developed Fourier filter analysis method. This method is demonstrated using the example of a strongly pronounced wave mode that occurred during the EISCAT experiment on 7 July 2020. Leveraging the developed technique, we show that the wave characteristics of traveling ionospheric disturbances are notably impacted by the fall transition of the mesosphere and lower thermosphere. We also demonstrate the application of using the determined wave parameters to infer the thermospheric neutral wind velocities. Applying the dissipative anelastic gravity wave dispersion relation, we obtain vertical wind profiles in the lower thermosphere.</p>https://angeo.copernicus.org/articles/41/409/2023/angeo-41-409-2023.pdf |
| spellingShingle | F. Günzkofer D. Pokhotelov G. Stober I. Mann S. L. Vadas E. Becker A. Tjulin A. Kozlovsky M. Tsutsumi M. Tsutsumi N. Gulbrandsen S. Nozawa M. Lester E. Belova J. Kero N. J. Mitchell N. J. Mitchell C. Borries Inferring neutral winds in the ionospheric transition region from atmospheric-gravity-wave traveling-ionospheric-disturbance (AGW-TID) observations with the EISCAT VHF radar and the Nordic Meteor Radar Cluster Annales Geophysicae |
| title | Inferring neutral winds in the ionospheric transition region from atmospheric-gravity-wave traveling-ionospheric-disturbance (AGW-TID) observations with the EISCAT VHF radar and the Nordic Meteor Radar Cluster |
| title_full | Inferring neutral winds in the ionospheric transition region from atmospheric-gravity-wave traveling-ionospheric-disturbance (AGW-TID) observations with the EISCAT VHF radar and the Nordic Meteor Radar Cluster |
| title_fullStr | Inferring neutral winds in the ionospheric transition region from atmospheric-gravity-wave traveling-ionospheric-disturbance (AGW-TID) observations with the EISCAT VHF radar and the Nordic Meteor Radar Cluster |
| title_full_unstemmed | Inferring neutral winds in the ionospheric transition region from atmospheric-gravity-wave traveling-ionospheric-disturbance (AGW-TID) observations with the EISCAT VHF radar and the Nordic Meteor Radar Cluster |
| title_short | Inferring neutral winds in the ionospheric transition region from atmospheric-gravity-wave traveling-ionospheric-disturbance (AGW-TID) observations with the EISCAT VHF radar and the Nordic Meteor Radar Cluster |
| title_sort | inferring neutral winds in the ionospheric transition region from atmospheric gravity wave traveling ionospheric disturbance agw tid observations with the eiscat vhf radar and the nordic meteor radar cluster |
| url | https://angeo.copernicus.org/articles/41/409/2023/angeo-41-409-2023.pdf |
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