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   Home right arrow Educational right arrow Space Weather right arrow What is Space Weather right arrow Glossary of Solar Terrestrial Terms FORECAST SOL: Moderateyellow MAG: Normalgreen ION: Moderateyellow Wednesday, Feb 08 2012 23:30 UT
Space Weather 
Glossary of Solar Terrestrial Terms

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Winter Anomaly
At mid latitudes, F2 frequencies are lower in summer than in winter, despite the smaller solar zenith angle during summer. This phenomenon occurs mostly around solar maximum.

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