Bremen 2017 – wissenschaftliches Programm

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UP: Fachverband Umweltphysik

UP 21: Atmosphäre - Mesosphäre

UP 21.7: Vortrag

Freitag, 17. März 2017, 14:45–15:00, GW2 B3009

Lidar observations of gravity waves. — •Irina Strelnikova, Gerd Baumgarten, Jens Hildebrand, Franz-Josef Lübken, and Michael Gerding — Leibniz-Institute of Atmospheric Physics e.V. at the University Rostock. Kühlungsborn. Germany

Experimental and modeling efforts show that small-scale gravity waves (GW) essentially affect large-scale circulations, thermal states, and dynamics from the surface to the middle atmosphere. In climate modeling and weather-forecasting applications the gravity-wave drag and its interaction with large-scale dynamics are referred to as sub-gridscale, i.e. unresolved processes and are the most uncertain aspect of these models. Recent advances in lidar measurement techniques allow for experimental studies of GWs at very small spatial and temporal scales, which are not accessible by other means. The state of the art Doppler Rayleigh/Mie/Raman lidar at the ALOMAR research station located in Northern Norway (69N, 16E) provides an observational database of GWs at the edge of the polar vortex connected to global dynamics of the Earth atmosphere. In this paper we will present some results of analyses of the GW observations by lidars and discuss implications on atmospheric system.