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Fig. 4 | Earth, Planets and Space

Fig. 4

From: Survey of conditions for artificial aurora experiments at EISCAT Tromsø using dynasonde data

Fig. 4

Variations in possible UT-date for conducting artificial aurora experiments from 2006 to 2011 (from a to f). The red region indicates periods under the possible condition, and the gray region indicates periods under the impossible condition. The white region corresponds to periods when there are no data. The solar zenith angle (SZA) of 96° is described by the black curve. Note that LT = UT + 1 h (for winter time), at Tromsø

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