Influence of meteorological systems on the ionosphere over Europe

0445394 - ÚFA 2016 CZ eng A - Abstrakt
Koucká Knížová, Petra - Mošna, Zbyšek - Kouba, Daniel - Potužníková, Kateřina - Boška, Josef
Influence of meteorological systems on the ionosphere over Europe.
26th IUGG General Assembly 2015. Earth and Environmental Sciences for Future Generations : abstracts. Prague: International Union of Geodesy and Geophysics, 2015. A12p-162.
[Earth and Environmental Sciences for Future Generations. General Assembly of International Union of Geodesy and Geophysics /26./. 22.06.2015-02.07.2015, Prague]
Institucionální podpora: RVO:68378289
Klíčová slova: ropospheric mesoscale systems * ionosphere
Kód oboru RIV: DG - Vědy o atmosféře, meteorologie
http://www.iugg2015prague.com/abstractcd/data/HtmlApp/main.html#

Correlation of long time series of the critical frequencies from European stations of vertical sounding is analysed with respect to latitudinal and longitudinal difference and surface distance of stations. Time series of critical frequencies are highly correlated reflecting the dominant solar influence. Correlation coefficients are high not only for raw data and subtracted mean courses but for fluctuations around mean as well. At the surface distance exceeding 1000 km and/ or about 10 degrees of latitudinal difference between stations, the correlation coefficient of fluctuations decrease rapidly. Such effect is less visible on the latitudinal dependence, where the correlation coefficients decrease with increasing distance with less pronounced threshold. We explain the existence of the ‘break point’ at 10 degrees in longitude and/or 1000 km by the ‘local’ influence of the neutral atmosphere and the wave activity. As a possible source of the common influence on scale 1000 km/10 degree we propose tropospheric systems that are known to be an important source of atmospheric waves in a broad period range. Large tropospheric mesoscale systems have typically up to 2000 km in diameter.
Trvalý link: http://hdl.handle.net/11104/0248277