Skip to main content
Earth, Planets and Space
Fig. 2 | Earth, Planets and Space

Fig. 2

From: High-latitude thermospheric wind study using a Fabry–Perot interferometer at Tromsø in Norway: averages and variations during quiet times

Fig. 2

Nightside quiet-time average wind in thermosphere (200–300 km) at Tromsø. The data were averaged in 0.5 h bins. a, b Quiet-time average zonal and meridional winds. In quiet times, the HWM14-derived average wind at Tromsø and average wind at Kiruna of Aruliah et al. (1999) are also shown. c, d Qualifying measurements satisfying both globally and locally quiet conditions, from which initial average wind (gray) is calculated. Red asterisks indicate those measurements with large deviations (> 100 m/s) from initial average winds, which were removed in calculating the final quiet-time averages. Note that we artificially shifted the HWM wind to a few minutes later to avoid overlapping error bars, although they were calculated using the same time bins as those for the quiet-time averages

Back to article page