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Combination of Lidar and Model Data for Studying Deep Gravity Wave Propagation
Stockholm University, Faculty of Science, Department of Meteorology .
Stockholm University, Faculty of Science, Department of Meteorology .
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Number of Authors: 8
2016 (English)In: Monthly Weather Review, ISSN 0027-0644, E-ISSN 1520-0493, Vol. 144, no 1, 77-98 p.Article in journal (Refereed) Published
Abstract [en]

The paper presents a feasible method to complement ground-based middle atmospheric Rayleigh lidar temperature observations with numerical simulations in the lower stratosphere and troposphere to study gravity waves. Validated mesoscale numerical simulations are utilized to complement the temperature below 30-km altitude. For this purpose, high-temporal-resolution output of the numerical results was interpolated on the position of the lidar in the lee of the Scandinavian mountain range. Two wintertime cases of orographically induced gravity waves are analyzed. Wave parameters are derived using a wavelet analysis of the combined dataset throughout the entire altitude range from the troposphere to the mesosphere. Although similar in the tropospheric forcings, both cases differ in vertical propagation. The combined dataset reveals stratospheric wave breaking for one case, whereas the mountain waves in the other case could propagate up to about 40-km altitude. The lidar observations reveal an interaction of the vertically propagating gravity waves with the stratopause, leading to a stratopause descent in both cases.

Place, publisher, year, edition, pages
2016. Vol. 144, no 1, 77-98 p.
National Category
Earth and Related Environmental Sciences
Identifiers
URN: urn:nbn:se:su:diva-126766DOI: 10.1175/MWR-D-14-00405.1ISI: 000368629800002OAI: oai:DiVA.org:su-126766DiVA: diva2:944711
Available from: 2016-06-29 Created: 2016-02-15 Last updated: 2016-06-29Bibliographically approved

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Gumbel, Jörg
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