Articles | Volume 21, issue 13
Atmos. Chem. Phys., 21, 10393–10412, 2021
https://doi.org/10.5194/acp-21-10393-2021
Atmos. Chem. Phys., 21, 10393–10412, 2021
https://doi.org/10.5194/acp-21-10393-2021

Research article 09 Jul 2021

Research article | 09 Jul 2021

Orographically induced spontaneous imbalance within the jet causing a large-scale gravity wave event

Markus Geldenhuys et al.

Data sets

Replication Data for Greenland ECMWF runs 2016-03-10: Orographically-induced Spontaneous Imbalance within the Jet Causing a Large Scale Gravity Wave Event Polichtchouk, I. https://doi.org/10.26165/JUELICH-DATA/OMK2I9

Video abstract

Brief introduction to Orographically-Induced Spontaneous Imbalance within the Jet Causing a Large Scale Gravity Wave Event Geldenhuys, M. https://www.youtube.com/watch?v=9Zx-QDfKjqs

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Short summary
A large-scale gravity wave (GW) was observed spanning the whole of Greenland. The GWs proposed in this paper come from a new jet–topography mechanism. The topography compresses the flow and triggers a change in u- and v-wind components. The jet becomes out of geostrophic balance and sheds energy in the form of GWs to restore the balance. This topography–jet interaction was not previously considered by the community, rendering the impact of the gravity waves largely unaccounted for.
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