<i>Letter to the Editor</i>: Spatial and seasonal variations of the <i>fo</i>F2 long-term trends
Using a method suggested by the authors earlier, the long-term trends of the F2-layer critical frequency, <i>fo</i>F2 are derived for a set of ionospheric stations with a wide latitudinal and longitudinal coverage. All the trends are found to be negative. A pronounced dependence on g...
| Main Authors: | , |
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| Format: | Article |
| Language: | English |
| Published: |
Copernicus Publications
1999-09-01
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| Series: | Annales Geophysicae |
| Online Access: | https://www.ann-geophys.net/17/1239/1999/angeo-17-1239-1999.pdf |