Please use this identifier to cite or link to this item: http://hdl.handle.net/2122/3496
AuthorsAlfonsi, Lu.* 
De Franceschi, G.* 
Perrone, L.* 
TitleLong term trend in the high latitude ionosphere
Issue Date2001
Series/Report no.5/26 (2001)
URIhttp://hdl.handle.net/2122/3496
Keywordslong term trends
Subject Classification01. Atmosphere::01.02. Ionosphere::01.02.04. Plasma Physics 
01. Atmosphere::01.02. Ionosphere::01.02.05. Wave propagation 
05. General::05.07. Space and Planetary sciences::05.07.01. Solar-terrestrial interaction 
AbstractThe long-term variability of the critical frequency of the F2 ionospheric layer, f0F2, has been investigated as a possible indicator of the increasing greenhouse effect. The prehmmary results obtained by analysing 34 years of data from high latitude ionospheric stations in the Southern Hemisphere have shown a decreasing of the plasma frequency according to what predicted by theoretical model calculations.
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