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- Title
Convective gravity wave events during summer near 54°N, present in both AIRS and RMR Lidar observations.
- Authors
Franco-Diaz, Eframir; Gerding, Michael; Holt, Laura; Strelnikova, Irina; Wing, Robin; Baumgarten, Gerd; Lübken, Franz-Josef
- Abstract
We connect tropospheric deep convective events over Western Europe, as measured by the 8.1 µm radiance observations from NASA’s Aqua satellite’s Atmospheric Infrared Sounder (AIRS), to horizontal brightness temperature variance in the 4 µm AIRS channel (maximum sensitivity at around 40 km) and temperature perturbations in vertical lidar profiles (between 33-43 km) over Kühlungsborn, Germany (54.12◦N, 11.77◦E). To account for wave propagation conditions from the troposphere to the stratosphere, we also consider the horizontal winds in the troposphere and stratosphere using ECMWF. In this work, we highlight sporadic peaks in gravity wave activity in summer greatly exceeding those typical of summer, which is generally a season with lower wave activity compared to winter. Although these events are present in roughly half of the years (between 2003 and 2019), we focus our study on two case study years (2014 and 2015). These case study years were chosen because of the high cadence of lidar soundings close in time to the convective events. These events, while sporadic, could contribute significantly to the zonal mean momentum budget and are not accounted for in weather and climate models.
- Subjects
WESTERN Europe; GRAVITY waves; UNITED States. National Aeronautics &; Space Administration; LIDAR; ATMOSPHERIC models; BRIGHTNESS temperature; THEORY of wave motion; SUMMER
- Publication
Atmospheric Chemistry & Physics Discussions, 2023, p1
- ISSN
1680-7367
- Publication type
Article
- DOI
10.5194/egusphere-2023-1963