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Finnish observers-network

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Abstract

Geographic latitude of Finland (between 60° and 70°N) provides a good oppoturnity to observe visually a number of geophysical and atmospherical phenomena. F.ex. aurora is frequent in northern latitudes, during summer months noctilucent clouds (NLC) in southern latitudes. Winter and spring months usually show some good halodisplays.

© 1990 Optical Society of America

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