Stratospheric Gravity Wave Fluxes and Scales during DEEPWAVE

During the Deep Propagating Gravity Wave Experiment (DEEPWAVE) project in June and July 2014, the Gulfstream V research aircraft flew 97 legs over the Southern Alps of New Zealand and 150 legs over the Tasman Sea and Southern Ocean, mostly in the low stratosphere at 12.1-km altitude. Improved instru...

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Bibliographic Details
Published in:Journal of the Atmospheric Sciences
Main Authors: Smith, Ronald B., Nugent, Alison D., Kruse, Christopher G., Fritts, David C., Doyle, James D., Eckermann, Steven D., Taylor, Michael J., Dörnbrack, Andreas, Uddstrom, M., Cooper, William, Romashkin, Pavel, Jensen, Jorgen, Beaton, Stuart
Format: Other Non-Article Part of Journal/Newspaper
Language:German
Published: American Meteorological Society 2016
Subjects:
Verkehrsmeteorologie
Southern Ocean
New Zealand
Online Access:https://elib.dlr.de/107196/
https://elib.dlr.de/107196/1/Alet-D%C3%B6rnbrack-JAS-D-15-0324.1.pdf
https://doi.org/10.1175/JAS-D-15-0324.1
Description
Summary:During the Deep Propagating Gravity Wave Experiment (DEEPWAVE) project in June and July 2014, the Gulfstream V research aircraft flew 97 legs over the Southern Alps of New Zealand and 150 legs over the Tasman Sea and Southern Ocean, mostly in the low stratosphere at 12.1-km altitude. Improved instrument calibration, redundant sensors, longer flight legs, energy flux estimation, and scale analysis revealed several new gravity wave properties. Over the sea, flight-level wave fluxes mostly fell below the detection threshold. Over terrain, disturbances had characteristic mountain wave attributes of positive vertical energy flux (EFz), negative zonal momentum flux, and upwind horizontal energy flux. In some cases, the fluxes changed rapidly within an 8-h flight, even though environmental conditions were nearly unchanged.

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