Ionospheric long-term trends for South A
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A.J Foppiano; L Cid; V Jara
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Article
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1999
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Elsevier Science
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English
β 253 KB
Using ionosonde made observations at ConcepcioΓ n (36.88S; 73.08W) for the 1958Β±1994 interval, long-term trends of critical frequency (foF2) and peak height (hmF2) of the ionospheric F2-layer are analysed. The trends found for dierent times-of-day and all seasons are consistent with an increasing di