What is it about?
Here it is shown that the columnar total electron content in the ionosphere (TEC) has a weak negative trend in line with behavior of other ionospheric parameters but contrary to previous result with positive trend, which was caused by data problem.
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Why is it important?
Total electron content affects GPS signal propagation, therefore it is important to know its long-term evolution.
Perspectives
This publication on one hand removes controversion about trends in TEC and clarifies its long-term evolution affecting a bit GPS signal propagation, on the other hand it broadens scenario of mutually consistent upper atmospheric and ionospheric long-term trends predominantly as a response to the increasing atmospheric concentration of grenhouse gases.
Dr Jan Lastovicka
Institute of Atmospheric Physics ASCR
Read the Original
This page is a summary of: Long-term trends in the total electron content, Geophysical Research Letters, August 2017, Wiley,
DOI: 10.1002/2017gl075063.
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