The 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
The Earth's magnetic field presents long-term variations with changes in strength and orientation. P...
The lower and middle atmosphere present long-term variations in temperatureand other parameters link...
Using a method suggested by the authors earlier, the long-term trends of the F2-layer critical freq...
The long-term variability of the critical frequency of the F2 ionospheric layer, f0F2, has been inv...
Theoretical calculations predict that CO doubling would produce a 50 K decrease in the thermospheric...
Abstract The long-term behaviour of the plasma frequency of the F2 layer, foF2, is investigated to...
Abstract The long-term behaviour of the plasma frequency of the F2 layer, foF2, is investigated...
Trends in the upper atmosphere, together with the global warming of the lower atmosphere, are part o...
Based on an analysis of the midday data of the midlatitude ionospheric stations in the Northern Hemi...
Based on an analysis of the midday data of the midlatitude ionospheric stations in the Northern Hemi...
The first part of the paper is directed to the investigation of the practical importance of possible...
Based on an analysis of the midday data of the midlatitude ionospheric stations in the Northern Hemi...
<p>The lower and middle atmosphere present long-term variations in temperature and other parameters ...
Based on an analysis of the midday data of the midlatitude ionospheric stations in the Northern Hemi...
Ground based ionosonde measurements are the most essential source of information about long-term va...
The Earth's magnetic field presents long-term variations with changes in strength and orientation. P...
The lower and middle atmosphere present long-term variations in temperatureand other parameters link...
Using a method suggested by the authors earlier, the long-term trends of the F2-layer critical freq...
The long-term variability of the critical frequency of the F2 ionospheric layer, f0F2, has been inv...
Theoretical calculations predict that CO doubling would produce a 50 K decrease in the thermospheric...
Abstract The long-term behaviour of the plasma frequency of the F2 layer, foF2, is investigated to...
Abstract The long-term behaviour of the plasma frequency of the F2 layer, foF2, is investigated...
Trends in the upper atmosphere, together with the global warming of the lower atmosphere, are part o...
Based on an analysis of the midday data of the midlatitude ionospheric stations in the Northern Hemi...
Based on an analysis of the midday data of the midlatitude ionospheric stations in the Northern Hemi...
The first part of the paper is directed to the investigation of the practical importance of possible...
Based on an analysis of the midday data of the midlatitude ionospheric stations in the Northern Hemi...
<p>The lower and middle atmosphere present long-term variations in temperature and other parameters ...
Based on an analysis of the midday data of the midlatitude ionospheric stations in the Northern Hemi...
Ground based ionosonde measurements are the most essential source of information about long-term va...
The Earth's magnetic field presents long-term variations with changes in strength and orientation. P...
The lower and middle atmosphere present long-term variations in temperatureand other parameters link...
Using a method suggested by the authors earlier, the long-term trends of the F2-layer critical freq...
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