Articles | Volume 38, issue 2
Ann. Geophys., 38, 527–544, 2020
https://doi.org/10.5194/angeo-38-527-2020
Ann. Geophys., 38, 527–544, 2020
https://doi.org/10.5194/angeo-38-527-2020
Regular paper
20 Apr 2020
Regular paper | 20 Apr 2020

Forcing mechanisms of the migrating quarterdiurnal tide

Christoph Geißler et al.

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Short summary
This is an extensive model study to analyze the migrating quarterdiurnal solar tide (QDT) and its forcing mechanisms in the middle atmosphere. We first show a climatology of the QDT amplitudes and examine the contribution of the different forcing mechanisms, including direct solar, nonlinear and gravity wave forcing, on the QDT amplitude. We then investigate the destructive interference between the individual forcing mechanisms.