Greifswald 2024 – wissenschaftliches Programm

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EP: Fachverband Extraterrestrische Physik

EP 1: Near-Earth Space and Space Weather

EP 1.1: Hauptvortrag

Montag, 26. Februar 2024, 14:30–15:00, ELP 1: HS 1.22

Gravity wave vertical coupling from the troposphere to the thermosphere — •Markus Rapp, Bernd Kaifler, Natalie Kaifler, Andreas Dörnbrack, Sonja Gisinger, Robert Reichert, Stefanie Knobloch, and Hella Garny — Deutsches Zentrum für Luft- und Raumfahrt, Institut für Physik der Atmosphäre, Oberpfaffenhofen, Germany

It is now well established that momentum and energy transport by gravity waves as well as its interaction with the mean flow is a key driver of middle atmospheric circulation. The latter in turn has important consequences for the middle atmospheric mean state. Unfortunately, though, gravity wave dynamics covers a very large range of spatial and temporal scales such that a comprehensive characterization both in terms of observations and modelling is still a major scientific challenge. This paper reviews efforts in both observations and modelling over the past 10 years during which ground based, airborne and satellite borne gravity wave observations were combined with models to shed light on several fundamental aspects of gravity wave dynamics and wave-mean flow interaction. Comprehensive data sets of gravity wave observations were collected from the Arctic to the South Pole which were used to characterize gravity wave processes and their role in climate. Examples will be presented and an outlook will be given how we plan to extend these studies into the thermosphere in order to gain better understanding of the role of neutral atmosphere vertical coupling for driving space weather phenomena.

Keywords: gravity wave dynamics; wave mean flow interaction; middle and upper atmosphere; vertical coupling