6–10 Jul 2026
University of the Western Cape
Africa/Johannesburg timezone
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Atmospheric Gravity Waves/Traveling Ionospheric Disturbances

8 Jul 2026, 10:10
20m
Lecture Hall C3 (University of the Western Cape)

Lecture Hall C3

University of the Western Cape

Oral Presentation Track D - Astrophysics & Space Science Astrophysics & Space Science

Speaker

Mr Hudson Mims (University of Michigan and South African National Space Agency)

Description

Traveling ionospheric disturbances (TIDs) are signatures of Atmospheric Gravity Waves (AGWs) in the ionosphere. They can be studied using different ionospheric parameters such as plasma temperature, electron density and altitudes of respective ionospheric layers.
Distinguishing effects of TIDs on the overall system behaviour requires estimation of background conditions. This presentation will discuss different methodologies used in background estimation when studying TIDs based on Global Navigation Satellite Systems (GNSS) data. Methods including (but not limited to); polynomial fitting, running averages and
 medians will be investigated to determine the appropriate detrending method that provides clear traces of TIDs from GNSS data.

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Authors

Mr Hudson Mims (University of Michigan and South African National Space Agency) John Bosco Habarulema (South African National Space Agency) Prof. Mark Moldwin (University of Michigan)

Presentation materials