Speaker
Description
Ionospheric spatial TEC (total electron content) gradients can be computed using TEC maps. There are different types of TEC maps. For example, simple TEC maps use only ground-based GNSS TEC data; the global ionospheric maps (GIMs) that are created using both ground and space ionospheric data. Another significant difference between the two types of TEC maps is that the GNSS TEC maps have gaps, while GIMs are made using interpolation techniques that help to fill the data gaps.
In this work we compared the performance of two TEC maps (DRAWING-TEC project of ISEE, Japan, and UQRG GIMs of UPC, Spain) used to calculate TEC gradient maps during June 22, 2015, a day of a strong geomagnetic storm. The study focused on a confined area that includes the Iberian Peninsula, north-west coast of Africa and the adjacent part of the Atlantic Ocean.
The similarity/differences in the two types of the TEC gradient maps during the quiet and geomagnetically disturbed hours of June 22, 2015, are studied using several statistical methods.
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