Electromagnetic energy deposition rate in the polar upper thermosphere derived from the EISCAT Svalbard radar and CUTLASS Finland radar observations
From simultaneous observations of the European incoherent scatter Svalbard radar (ESR) and the Cooperative UK Twin Located Auroral Sounding System (CUTLASS) Finland radar on 9 March 1999, we have derived the height distributions of the thermospheric heating rate at the F region height in association...
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ftnonlinearchiv:oai:noa.gwlb.de:cop_mods_00031911 2023-05-15T16:04:46+02:00 Electromagnetic energy deposition rate in the polar upper thermosphere derived from the EISCAT Svalbard radar and CUTLASS Finland radar observations Fujiwara, H. Kataoka, R. Suzuki, M. Maeda, S. Nozawa, S. Hosokawa, K. Fukunishi, H. Sato, N. Lester, M. 2007-11 electronic https://doi.org/10.5194/angeo-25-2393-2007 https://noa.gwlb.de/receive/cop_mods_00031911 https://noa.gwlb.de/servlets/MCRFileNodeServlet/cop_derivate_00031865/angeo-25-2393-2007.pdf https://angeo.copernicus.org/articles/25/2393/2007/angeo-25-2393-2007.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-25-2393-2007 https://noa.gwlb.de/receive/cop_mods_00031911 https://noa.gwlb.de/servlets/MCRFileNodeServlet/cop_derivate_00031865/angeo-25-2393-2007.pdf https://angeo.copernicus.org/articles/25/2393/2007/angeo-25-2393-2007.pdf uneingeschränkt info:eu-repo/semantics/openAccess article Verlagsveröffentlichung article Text doc-type:article 2007 ftnonlinearchiv https://doi.org/10.5194/angeo-25-2393-2007 2022-02-08T22:46:29Z From simultaneous observations of the European incoherent scatter Svalbard radar (ESR) and the Cooperative UK Twin Located Auroral Sounding System (CUTLASS) Finland radar on 9 March 1999, we have derived the height distributions of the thermospheric heating rate at the F region height in association with electromagnetic energy inputs into the dayside polar cap/cusp region. The ESR and CUTLASS radar observations provide the ionospheric parameters with fine time-resolutions of a few minutes. Although the geomagnetic activity was rather moderate (Kp=3+~4), the electric field obtained from the ESR data sometimes shows values exceeding 40 mV/m. The estimated passive energy deposition rates are also larger than 150 W/kg in the upper thermosphere over the ESR site during the period of the enhanced electric field. In addition, enhancements of the Pedersen conductivity also contribute to heating the upper thermosphere, while there is only a small contribution for thermospheric heating from the direct particle heating due to soft particle precipitation in the dayside polar cap/cusp region. In the same period, the CUTLASS observations of the ion drift show the signature of poleward moving pulsed ionospheric flows with a recurrence rate of about 10–20 min. The estimated electromagnetic energy deposition rate shows the existence of the strong heat source in the dayside polar cap/cusp region of the upper thermosphere in association with the dayside magnetospheric phenomena of reconnections and flux transfer events. Article in Journal/Newspaper EISCAT Svalbard Niedersächsisches Online-Archiv NOA Svalbard Pedersen ENVELOPE(140.013,140.013,-66.668,-66.668) Annales Geophysicae 25 11 2393 2403 |
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Niedersächsisches Online-Archiv NOA |
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language |
English |
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article Verlagsveröffentlichung |
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article Verlagsveröffentlichung Fujiwara, H. Kataoka, R. Suzuki, M. Maeda, S. Nozawa, S. Hosokawa, K. Fukunishi, H. Sato, N. Lester, M. Electromagnetic energy deposition rate in the polar upper thermosphere derived from the EISCAT Svalbard radar and CUTLASS Finland radar observations |
topic_facet |
article Verlagsveröffentlichung |
description |
From simultaneous observations of the European incoherent scatter Svalbard radar (ESR) and the Cooperative UK Twin Located Auroral Sounding System (CUTLASS) Finland radar on 9 March 1999, we have derived the height distributions of the thermospheric heating rate at the F region height in association with electromagnetic energy inputs into the dayside polar cap/cusp region. The ESR and CUTLASS radar observations provide the ionospheric parameters with fine time-resolutions of a few minutes. Although the geomagnetic activity was rather moderate (Kp=3+~4), the electric field obtained from the ESR data sometimes shows values exceeding 40 mV/m. The estimated passive energy deposition rates are also larger than 150 W/kg in the upper thermosphere over the ESR site during the period of the enhanced electric field. In addition, enhancements of the Pedersen conductivity also contribute to heating the upper thermosphere, while there is only a small contribution for thermospheric heating from the direct particle heating due to soft particle precipitation in the dayside polar cap/cusp region. In the same period, the CUTLASS observations of the ion drift show the signature of poleward moving pulsed ionospheric flows with a recurrence rate of about 10–20 min. The estimated electromagnetic energy deposition rate shows the existence of the strong heat source in the dayside polar cap/cusp region of the upper thermosphere in association with the dayside magnetospheric phenomena of reconnections and flux transfer events. |
format |
Article in Journal/Newspaper |
author |
Fujiwara, H. Kataoka, R. Suzuki, M. Maeda, S. Nozawa, S. Hosokawa, K. Fukunishi, H. Sato, N. Lester, M. |
author_facet |
Fujiwara, H. Kataoka, R. Suzuki, M. Maeda, S. Nozawa, S. Hosokawa, K. Fukunishi, H. Sato, N. Lester, M. |
author_sort |
Fujiwara, H. |
title |
Electromagnetic energy deposition rate in the polar upper thermosphere derived from the EISCAT Svalbard radar and CUTLASS Finland radar observations |
title_short |
Electromagnetic energy deposition rate in the polar upper thermosphere derived from the EISCAT Svalbard radar and CUTLASS Finland radar observations |
title_full |
Electromagnetic energy deposition rate in the polar upper thermosphere derived from the EISCAT Svalbard radar and CUTLASS Finland radar observations |
title_fullStr |
Electromagnetic energy deposition rate in the polar upper thermosphere derived from the EISCAT Svalbard radar and CUTLASS Finland radar observations |
title_full_unstemmed |
Electromagnetic energy deposition rate in the polar upper thermosphere derived from the EISCAT Svalbard radar and CUTLASS Finland radar observations |
title_sort |
electromagnetic energy deposition rate in the polar upper thermosphere derived from the eiscat svalbard radar and cutlass finland radar observations |
publisher |
Copernicus Publications |
publishDate |
2007 |
url |
https://doi.org/10.5194/angeo-25-2393-2007 https://noa.gwlb.de/receive/cop_mods_00031911 https://noa.gwlb.de/servlets/MCRFileNodeServlet/cop_derivate_00031865/angeo-25-2393-2007.pdf https://angeo.copernicus.org/articles/25/2393/2007/angeo-25-2393-2007.pdf |
long_lat |
ENVELOPE(140.013,140.013,-66.668,-66.668) |
geographic |
Svalbard Pedersen |
geographic_facet |
Svalbard Pedersen |
genre |
EISCAT Svalbard |
genre_facet |
EISCAT 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-25-2393-2007 https://noa.gwlb.de/receive/cop_mods_00031911 https://noa.gwlb.de/servlets/MCRFileNodeServlet/cop_derivate_00031865/angeo-25-2393-2007.pdf https://angeo.copernicus.org/articles/25/2393/2007/angeo-25-2393-2007.pdf |
op_rights |
uneingeschränkt info:eu-repo/semantics/openAccess |
op_doi |
https://doi.org/10.5194/angeo-25-2393-2007 |
container_title |
Annales Geophysicae |
container_volume |
25 |
container_issue |
11 |
container_start_page |
2393 |
op_container_end_page |
2403 |
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1766400399246360576 |