Greifswald 2024 – wissenschaftliches Programm

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UP: Fachverband Umweltphysik

UP 6: Other Topics

UP 6.2: Vortrag

Mittwoch, 28. Februar 2024, 14:45–15:00, ELP 6: HS 1

Atmospheric Gravity Wave Spectra: A Study Using Lidar Data — •Mohamed Mossad, Irina Strelnikova, Robin Wing, Gerd Baumgarten, Michael Gerding, Jens Fiedler, and Eframir Franco-Diaz — Leibniz Institute of Atmospheric Physics, Kühlungsborn, Germany.

Gravity waves (GWs) play a crucial role in Earth's atmospheric dynamics. The propagation, breaking and dissipation of GWs drive the general circulation of the atmosphere, redistributing energy and momentum through the different layers of the atmosphere. Changes in wind and temperature measured by lidars and other instruments help us understand the spectral properties of GWs, such as their frequencies, amplitudes, and scales. Better understanding of these parameters and the sources that produce GWs is important to model parameterizations of their impact on the average state of the atmosphere.

In this study, we analyze lidar data from Kühlungsborn (54°N, 12°E) and ALOMAR (69°N, 16°E) to examine the GW spectra in the atmosphere. We present a thorough analysis of GW spectra across various atmospheric conditions, focusing on seasonal and altitudinal variations. This work contributes to a deeper comprehension of energy transfer within the atmosphere, bridging theoretical models with empirical observations and offering insights beneficial for climatological research and environmental forecasting.

Keywords: gravity waves; spectra; lidar; scaling; energy transfer