Time delays in the correlation between solar activity and the F2 region plasma frequency

0367651 - ÚFA 2012 RIV GB eng J - Článek v odborném periodiku
Třísková, Ludmila - Truhlík, Vladimír - Podolská, Kateřina
Time delays in the correlation between solar activity and the F2 region plasma frequency.
Journal of Atmospheric and Solar-Terrestrial Physics. Roč. 73, 5-6 (2011), s. 623-626. ISSN 1364-6826. E-ISSN 1879-1824
Grant CEP: GA ČR GAP209/10/2086
Výzkumný záměr: CEZ:AV0Z30420517
Klíčová slova: F2 region ionosphere * Solar activity * Time series
Kód oboru RIV: DG - Vědy o atmosféře, meteorologie
Impakt faktor: 1.596, rok: 2011
http://www.sciencedirect.com/science/article/pii/S1364682610004128

The upper ionosphere electron density characterized by the critical frequency foF2 is correlated with solar activity when using monthly medians or averages from longer intervals. When shorter intervals are studied, time delays of different lengths in solar activity effects in the ionosphere are observed. The correlation between the foF2 values and the solar radiation intensity, given by the F10.7 index, is studied using the 1967-2003 data of mid-latitude ionosonde stations spaced at distances greater than 1000 in geographical longitude. At which longitude the reaction of foF2 to the changes in solar activity appears sooner depends on the position of the interval studied in the 22-year solar cycle.
Trvalý link: http://hdl.handle.net/11104/0202245