Climatology of GPS phase scintillation at northern high latitudes for the period from 2008 to 2013
Global positioning system scintillation and total electron content (TEC) data have been collected by ten specialized GPS Ionospheric Scintillation and TEC Monitors (GISTMs) of the Canadian High Arctic Ionospheric Network (CHAIN). The phase scintillation index σΦ is obtained from the phase of the L1...
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Copernicus Publications
2015
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ftnonlinearchiv:oai:noa.gwlb.de:cop_mods_00016488 2023-05-15T15:18:54+02:00 Climatology of GPS phase scintillation at northern high latitudes for the period from 2008 to 2013 Prikryl, P. Jayachandran, P. T. Chadwick, R. Kelly, T. D. 2015-05 electronic https://doi.org/10.5194/angeo-33-531-2015 https://noa.gwlb.de/receive/cop_mods_00016488 https://noa.gwlb.de/servlets/MCRFileNodeServlet/cop_derivate_00016443/angeo-33-531-2015.pdf https://angeo.copernicus.org/articles/33/531/2015/angeo-33-531-2015.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-33-531-2015 https://noa.gwlb.de/receive/cop_mods_00016488 https://noa.gwlb.de/servlets/MCRFileNodeServlet/cop_derivate_00016443/angeo-33-531-2015.pdf https://angeo.copernicus.org/articles/33/531/2015/angeo-33-531-2015.pdf uneingeschränkt info:eu-repo/semantics/openAccess article Verlagsveröffentlichung article Text doc-type:article 2015 ftnonlinearchiv https://doi.org/10.5194/angeo-33-531-2015 2022-02-08T22:54:09Z Global positioning system scintillation and total electron content (TEC) data have been collected by ten specialized GPS Ionospheric Scintillation and TEC Monitors (GISTMs) of the Canadian High Arctic Ionospheric Network (CHAIN). The phase scintillation index σΦ is obtained from the phase of the L1 signal sampled at 50 Hz. Maps of phase scintillation occurrence as a function of the altitude-adjusted corrected geomagnetic (AACGM) latitude and magnetic local time (MLT) are computed for the period from 2008 to 2013. Enhanced phase scintillation is collocated with regions that are known as ionospheric signatures of the coupling between the solar wind and magnetosphere. The phase scintillation mainly occurs on the dayside in the cusp where ionospheric irregularities convect at high speed, in the nightside auroral oval where energetic particle precipitation causes field-aligned irregularities with steep electron density gradients and in the polar cap where electron density patches that are formed from a tongue of ionization. Dependences of scintillation occurrence on season, solar and geomagnetic activity, and the interplanetary magnetic field (IMF) orientation are investigated. The auroral phase scintillation shows semiannual variation with equinoctial maxima known to be associated with auroras, while in the cusp and polar cap the scintillation occurrence is highest in the autumn and winter months and lowest in summer. With rising solar and geomagnetic activity from the solar minimum to solar maximum, yearly maps of mean phase scintillation occurrence show gradual increase and expansion of enhanced scintillation regions both poleward and equatorward from the statistical auroral oval. The dependence of scintillation occurrence on the IMF orientation is dominated by increased scintillation in the cusp, expanded auroral oval and at subauroral latitudes for strongly southward IMF. In the polar cap, the IMF BY polarity controls dawn–dusk asymmetries in scintillation occurrence collocated with a tongue of ionization for southward IMF and with sun-aligned arcs for northward IMF. In investigating the shape of scintillation-causing irregularities, the distributions of scintillation occurrence as a function of "off-meridian" and "off-shell" angles that are computed for the receiver–satellite ray at the ionospheric pierce point are found to suggest predominantly field-aligned irregularities in the auroral oval and L-shell-aligned irregularities in the cusp. Article in Journal/Newspaper Arctic Canadian High Arctic Ionospheric Network Niedersächsisches Online-Archiv NOA Arctic Annales Geophysicae 33 5 531 545 |
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Niedersächsisches Online-Archiv NOA |
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article Verlagsveröffentlichung |
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article Verlagsveröffentlichung Prikryl, P. Jayachandran, P. T. Chadwick, R. Kelly, T. D. Climatology of GPS phase scintillation at northern high latitudes for the period from 2008 to 2013 |
topic_facet |
article Verlagsveröffentlichung |
description |
Global positioning system scintillation and total electron content (TEC) data have been collected by ten specialized GPS Ionospheric Scintillation and TEC Monitors (GISTMs) of the Canadian High Arctic Ionospheric Network (CHAIN). The phase scintillation index σΦ is obtained from the phase of the L1 signal sampled at 50 Hz. Maps of phase scintillation occurrence as a function of the altitude-adjusted corrected geomagnetic (AACGM) latitude and magnetic local time (MLT) are computed for the period from 2008 to 2013. Enhanced phase scintillation is collocated with regions that are known as ionospheric signatures of the coupling between the solar wind and magnetosphere. The phase scintillation mainly occurs on the dayside in the cusp where ionospheric irregularities convect at high speed, in the nightside auroral oval where energetic particle precipitation causes field-aligned irregularities with steep electron density gradients and in the polar cap where electron density patches that are formed from a tongue of ionization. Dependences of scintillation occurrence on season, solar and geomagnetic activity, and the interplanetary magnetic field (IMF) orientation are investigated. The auroral phase scintillation shows semiannual variation with equinoctial maxima known to be associated with auroras, while in the cusp and polar cap the scintillation occurrence is highest in the autumn and winter months and lowest in summer. With rising solar and geomagnetic activity from the solar minimum to solar maximum, yearly maps of mean phase scintillation occurrence show gradual increase and expansion of enhanced scintillation regions both poleward and equatorward from the statistical auroral oval. The dependence of scintillation occurrence on the IMF orientation is dominated by increased scintillation in the cusp, expanded auroral oval and at subauroral latitudes for strongly southward IMF. In the polar cap, the IMF BY polarity controls dawn–dusk asymmetries in scintillation occurrence collocated with a tongue of ionization for southward IMF and with sun-aligned arcs for northward IMF. In investigating the shape of scintillation-causing irregularities, the distributions of scintillation occurrence as a function of "off-meridian" and "off-shell" angles that are computed for the receiver–satellite ray at the ionospheric pierce point are found to suggest predominantly field-aligned irregularities in the auroral oval and L-shell-aligned irregularities in the cusp. |
format |
Article in Journal/Newspaper |
author |
Prikryl, P. Jayachandran, P. T. Chadwick, R. Kelly, T. D. |
author_facet |
Prikryl, P. Jayachandran, P. T. Chadwick, R. Kelly, T. D. |
author_sort |
Prikryl, P. |
title |
Climatology of GPS phase scintillation at northern high latitudes for the period from 2008 to 2013 |
title_short |
Climatology of GPS phase scintillation at northern high latitudes for the period from 2008 to 2013 |
title_full |
Climatology of GPS phase scintillation at northern high latitudes for the period from 2008 to 2013 |
title_fullStr |
Climatology of GPS phase scintillation at northern high latitudes for the period from 2008 to 2013 |
title_full_unstemmed |
Climatology of GPS phase scintillation at northern high latitudes for the period from 2008 to 2013 |
title_sort |
climatology of gps phase scintillation at northern high latitudes for the period from 2008 to 2013 |
publisher |
Copernicus Publications |
publishDate |
2015 |
url |
https://doi.org/10.5194/angeo-33-531-2015 https://noa.gwlb.de/receive/cop_mods_00016488 https://noa.gwlb.de/servlets/MCRFileNodeServlet/cop_derivate_00016443/angeo-33-531-2015.pdf https://angeo.copernicus.org/articles/33/531/2015/angeo-33-531-2015.pdf |
geographic |
Arctic |
geographic_facet |
Arctic |
genre |
Arctic Canadian High Arctic Ionospheric Network |
genre_facet |
Arctic Canadian High Arctic Ionospheric Network |
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-33-531-2015 https://noa.gwlb.de/receive/cop_mods_00016488 https://noa.gwlb.de/servlets/MCRFileNodeServlet/cop_derivate_00016443/angeo-33-531-2015.pdf https://angeo.copernicus.org/articles/33/531/2015/angeo-33-531-2015.pdf |
op_rights |
uneingeschränkt info:eu-repo/semantics/openAccess |
op_doi |
https://doi.org/10.5194/angeo-33-531-2015 |
container_title |
Annales Geophysicae |
container_volume |
33 |
container_issue |
5 |
container_start_page |
531 |
op_container_end_page |
545 |
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1766349059192258560 |