Space weather challenges of the polar cap ionosphere
This paper presents research on polar cap ionosphere space weather phenomena conducted during the European Cooperation in Science and Technology (COST) action ES0803 from 2008 to 2012. The main part of the work has been directed toward the study of plasma instabilities and scintillations in associat...
Published in: | Journal of Space Weather and Space Climate |
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ftoslouniv:oai:www.duo.uio.no:10852/50350 2023-05-15T16:04:49+02:00 Space weather challenges of the polar cap ionosphere Moen, Jøran Idar Oksavik, Kjellmar Alfonsi, Lucilla Dåbakk, Yvonne Rinne Romano, Vineenzo Spogli, Luca 2013-09-11T12:50:07Z http://hdl.handle.net/10852/50350 http://urn.nb.no/URN:NBN:no-53973 https://doi.org/10.1051/swsc/2013025 EN eng EDP Sciences http://urn.nb.no/URN:NBN:no-53973 Moen, Jøran Idar Oksavik, Kjellmar Alfonsi, Lucilla Dåbakk, Yvonne Rinne Romano, Vineenzo Spogli, Luca . Space weather challenges of the polar cap ionosphere. Journal of Space Weather and Space Climate. 2013, 3 http://hdl.handle.net/10852/50350 1048401 info:ofi/fmt:kev:mtx:ctx&ctx_ver=Z39.88-2004&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.jtitle=Journal of Space Weather and Space Climate&rft.volume=3&rft.spage=&rft.date=2013 Journal of Space Weather and Space Climate 3 13 http://dx.doi.org/10.1051/swsc/2013025 URN:NBN:no-53973 Fulltext https://www.duo.uio.no/bitstream/handle/10852/50350/1/swsc120045.pdf Attribution 2.0 Generic http://creativecommons.org/licenses/by/2.0/ CC-BY 2115-7251 VDP::Meteorologi: 453 Journal article Tidsskriftartikkel Peer reviewed PublishedVersion 2013 ftoslouniv https://doi.org/10.1051/swsc/2013025 2020-06-21T08:49:30Z This paper presents research on polar cap ionosphere space weather phenomena conducted during the European Cooperation in Science and Technology (COST) action ES0803 from 2008 to 2012. The main part of the work has been directed toward the study of plasma instabilities and scintillations in association with cusp flow channels and polar cap electron density structures/patches, which is considered as critical knowledge in order to develop forecast models for scintillations in the polar cap. We have approached this problem by multi-instrument techniques that comprise the EISCAT Svalbard Radar, SuperDARN radars, in-situ rocket, and GPS scintillation measurements. The Discussion section aims to unify the bits and pieces of highly specialized information from several papers into a generalized picture. The cusp ionosphere appears as a hot region in GPS scintillation climatology maps. Our results are consistent with the existing view that scintillations in the cusp and the polar cap ionosphere are mainly due to multi-scale structures generated by instability processes associated with the cross-polar transport of polar cap patches. We have demonstrated that the SuperDARN convection model can be used to track these patches backward and forward in time. Hence, once a patch has been detected in the cusp inflow region, SuperDARN can be used to forecast its destination in the future. However, the high-density gradient of polar cap patches is not the only prerequisite for high-latitude scintillations. Unprecedented high-resolution rocket measurements reveal that the cusp ionosphere is associated with filamentary precipitation giving rise to kilometer scale gradients onto which the gradient drift instability can operate very efficiently. Cusp ionosphere scintillations also occur during IMF BZ north conditions, which further substantiates that particle precipitation can play a key role to initialize plasma structuring. Furthermore, the cusp is associated with flow channels and strong flow shears, and we have demonstrated that the Kelvin-Helmholtz instability process may be efficiently driven by reversed flow events. Article in Journal/Newspaper EISCAT Svalbard Universitet i Oslo: Digitale utgivelser ved UiO (DUO) Svalbard Journal of Space Weather and Space Climate 3 A02 |
institution |
Open Polar |
collection |
Universitet i Oslo: Digitale utgivelser ved UiO (DUO) |
op_collection_id |
ftoslouniv |
language |
English |
topic |
VDP::Meteorologi: 453 |
spellingShingle |
VDP::Meteorologi: 453 Moen, Jøran Idar Oksavik, Kjellmar Alfonsi, Lucilla Dåbakk, Yvonne Rinne Romano, Vineenzo Spogli, Luca Space weather challenges of the polar cap ionosphere |
topic_facet |
VDP::Meteorologi: 453 |
description |
This paper presents research on polar cap ionosphere space weather phenomena conducted during the European Cooperation in Science and Technology (COST) action ES0803 from 2008 to 2012. The main part of the work has been directed toward the study of plasma instabilities and scintillations in association with cusp flow channels and polar cap electron density structures/patches, which is considered as critical knowledge in order to develop forecast models for scintillations in the polar cap. We have approached this problem by multi-instrument techniques that comprise the EISCAT Svalbard Radar, SuperDARN radars, in-situ rocket, and GPS scintillation measurements. The Discussion section aims to unify the bits and pieces of highly specialized information from several papers into a generalized picture. The cusp ionosphere appears as a hot region in GPS scintillation climatology maps. Our results are consistent with the existing view that scintillations in the cusp and the polar cap ionosphere are mainly due to multi-scale structures generated by instability processes associated with the cross-polar transport of polar cap patches. We have demonstrated that the SuperDARN convection model can be used to track these patches backward and forward in time. Hence, once a patch has been detected in the cusp inflow region, SuperDARN can be used to forecast its destination in the future. However, the high-density gradient of polar cap patches is not the only prerequisite for high-latitude scintillations. Unprecedented high-resolution rocket measurements reveal that the cusp ionosphere is associated with filamentary precipitation giving rise to kilometer scale gradients onto which the gradient drift instability can operate very efficiently. Cusp ionosphere scintillations also occur during IMF BZ north conditions, which further substantiates that particle precipitation can play a key role to initialize plasma structuring. Furthermore, the cusp is associated with flow channels and strong flow shears, and we have demonstrated that the Kelvin-Helmholtz instability process may be efficiently driven by reversed flow events. |
format |
Article in Journal/Newspaper |
author |
Moen, Jøran Idar Oksavik, Kjellmar Alfonsi, Lucilla Dåbakk, Yvonne Rinne Romano, Vineenzo Spogli, Luca |
author_facet |
Moen, Jøran Idar Oksavik, Kjellmar Alfonsi, Lucilla Dåbakk, Yvonne Rinne Romano, Vineenzo Spogli, Luca |
author_sort |
Moen, Jøran Idar |
title |
Space weather challenges of the polar cap ionosphere |
title_short |
Space weather challenges of the polar cap ionosphere |
title_full |
Space weather challenges of the polar cap ionosphere |
title_fullStr |
Space weather challenges of the polar cap ionosphere |
title_full_unstemmed |
Space weather challenges of the polar cap ionosphere |
title_sort |
space weather challenges of the polar cap ionosphere |
publisher |
EDP Sciences |
publishDate |
2013 |
url |
http://hdl.handle.net/10852/50350 http://urn.nb.no/URN:NBN:no-53973 https://doi.org/10.1051/swsc/2013025 |
geographic |
Svalbard |
geographic_facet |
Svalbard |
genre |
EISCAT Svalbard |
genre_facet |
EISCAT Svalbard |
op_source |
2115-7251 |
op_relation |
http://urn.nb.no/URN:NBN:no-53973 Moen, Jøran Idar Oksavik, Kjellmar Alfonsi, Lucilla Dåbakk, Yvonne Rinne Romano, Vineenzo Spogli, Luca . Space weather challenges of the polar cap ionosphere. Journal of Space Weather and Space Climate. 2013, 3 http://hdl.handle.net/10852/50350 1048401 info:ofi/fmt:kev:mtx:ctx&ctx_ver=Z39.88-2004&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.jtitle=Journal of Space Weather and Space Climate&rft.volume=3&rft.spage=&rft.date=2013 Journal of Space Weather and Space Climate 3 13 http://dx.doi.org/10.1051/swsc/2013025 URN:NBN:no-53973 Fulltext https://www.duo.uio.no/bitstream/handle/10852/50350/1/swsc120045.pdf |
op_rights |
Attribution 2.0 Generic http://creativecommons.org/licenses/by/2.0/ |
op_rightsnorm |
CC-BY |
op_doi |
https://doi.org/10.1051/swsc/2013025 |
container_title |
Journal of Space Weather and Space Climate |
container_volume |
3 |
container_start_page |
A02 |
_version_ |
1766400447093932032 |