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Fig. 1 | Progress in Earth and Planetary Science

Fig. 1

From: Ionospheric responses to the 21 August 2017 solar eclipse by using data assimilation approach

Fig. 1

Comparisons of GNSS TEC observations (a), data assimilation results on the eclipse previous day (b) and the eclipse day (c), and the TEC difference between these 2 days (d) around the North and South America regions at 1730 UT (top panels), 1800 UT (middle panels), and 1830 UT (bottom panels), respectively. Black indicates the magnetic equator. White circle is the location of maximum obscuration of the solar eclipse. The white line in d indicates the locations of geomagnetic field line projecting to the ground surface. The field line start from the location of the solar eclipse (white circle) to its conjugate location in the southern hemisphere

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