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Progress in Earth and Planetary Science
Fig. 12 | Progress in Earth and Planetary Science

Fig. 12

From: The science case for the EISCAT_3D radar

Fig. 12

Almost 50 years of data from the ionosonde in Sodankylä, Finland, showing an apparent long-term decrease in the height of the F region (courtesy of Dr. T. Ulich, extending the series of observations first reported by Ulich and Turunen (1997))

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