SOURCES OF THE IONOSPHERIC VARIABILITY OVER EUROPE IN WINTER TIME FROM THE IONOSONDE AND GPS/GLONASS DATA

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F68378289%3A_____%2F17%3A00477414" target="_blank" >RIV/68378289:_____/17:00477414 - isvavai.cz</a>

Výsledek na webu

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DOI - Digital Object Identifier

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Jazyk výsledku

angličtina

Název v původním jazyce

SOURCES OF THE IONOSPHERIC VARIABILITY OVER EUROPE IN WINTER TIME FROM THE IONOSONDE AND GPS/GLONASS DATA

Popis výsledku v původním jazyce

The latitudinal dependence of ionospheric variability on the configuration and parametersnof high-speed jet streams associated with the winter circumpolar vortex at the stratosphere/lowernmesosphere heights are studied. We conducted a joint analysis of the variations of thenionospheric F2-layer electron density peak and total electron content (TEC) of the ionospherenover the mid- and high-latitude regions of Europe in the winter months (November to February)nover 2008–2010 under low solar and geomagnetic activity conditions. The ionospherenparameters were obtained from measurements made at the meridional chain of European verticalnsounding ionosondes Rome (41.9° N, 12.5° E), Pruhonice (50.0° N, 14.6° E), Juliusruh (54.6° N,n13.4° E), Sodankylä (67.3° N, 26.6° E). The measurements on a network of the phase dualfrequencynGPS/GLONASS receivers located in the range of 40–70° N and 10–30° E were usednto obtain TEC. The calculation of the vertical total electron content from the initial series wasnbased on the developed absolute TEC model taking into account differential code biases. Tonstudy the dynamics of the winter circumpolar vortex in the Northern Hemisphere, we use thendata from the ECMWF ERA-Interim Reanalysis. The analysis showed the significant increase innwave-like activity in the stratosphere/lower mesosphere during winter seasons for all analyzednyears. Variations of ionospheric parameters observed at different latitudes depend on the stationnpositions relative to the jet stream circulation zone.

Název v anglickém jazyce

SOURCES OF THE IONOSPHERIC VARIABILITY OVER EUROPE IN WINTER TIME FROM THE IONOSONDE AND GPS/GLONASS DATA

Popis výsledku anglicky

The latitudinal dependence of ionospheric variability on the configuration and parametersnof high-speed jet streams associated with the winter circumpolar vortex at the stratosphere/lowernmesosphere heights are studied. We conducted a joint analysis of the variations of thenionospheric F2-layer electron density peak and total electron content (TEC) of the ionospherenover the mid- and high-latitude regions of Europe in the winter months (November to February)nover 2008–2010 under low solar and geomagnetic activity conditions. The ionospherenparameters were obtained from measurements made at the meridional chain of European verticalnsounding ionosondes Rome (41.9° N, 12.5° E), Pruhonice (50.0° N, 14.6° E), Juliusruh (54.6° N,n13.4° E), Sodankylä (67.3° N, 26.6° E). The measurements on a network of the phase dualfrequencynGPS/GLONASS receivers located in the range of 40–70° N and 10–30° E were usednto obtain TEC. The calculation of the vertical total electron content from the initial series wasnbased on the developed absolute TEC model taking into account differential code biases. Tonstudy the dynamics of the winter circumpolar vortex in the Northern Hemisphere, we use thendata from the ECMWF ERA-Interim Reanalysis. The analysis showed the significant increase innwave-like activity in the stratosphere/lower mesosphere during winter seasons for all analyzednyears. Variations of ionospheric parameters observed at different latitudes depend on the stationnpositions relative to the jet stream circulation zone.

Druh

O - Ostatní výsledky

CEP obor

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OECD FORD obor

10509 - Meteorology and atmospheric sciences

Projekt

<a href="/cs/project/GA15-24688S" target="_blank" >GA15-24688S: Proměnlivost ionosféry a neutrální atmosféry ve středních šířkách</a><br>

Návaznosti

P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)

Rok uplatnění

2017

Kód důvěrnosti údajů

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů