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Wagner, Johannes and Dörnbrack, Andreas and Rapp, Markus and Gisinger, Sonja and Ehard, Benedikt and Bramberger, Martina and Witschas, Benjamin and Chouza, Fernando and Rahm, Stephan and Mallaun, Christian and Baumgarten, Gerd and Hoor, Peter (2017) Observed versus simulated mountain waves over Scandinavia - improvement of vertical winds, energy and momentum fluxes by enhanced model resolution? Atmospheric Chemistry and Physics, 17, pp. 4031-4052. Copernicus Publications. doi: 10.5194/acp-17-4031-2017. ISSN 1680-7316.
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Official URL: http://www.atmos-chem-phys.net/17/4031/2017/
Abstract
Two mountain wave events, which occurred over northern Scandinavia in December 2013 are analysed by means of airborne observations and global and mesoscale numerical simulations with horizontal mesh sizes of 16, 7.2, 2.4 and 0.8 km. During both events westerly cross-mountain flow induced upward-propagating mountain waves with different wave characteristics due to differing atmospheric background conditions. While wave breaking occurred at altitudes between 25 and 30 km during the first event due to weak stratospheric winds, waves propagated to altitudes above 30 km and interfacial waves formed in the troposphere at a stratospheric intrusion layer during the second event. Global and mesoscale simulations with 16 and 7.2 km grid sizes were not able to simulate the amplitudes and wavelengths of the mountain waves correctly due to unresolved mountain peaks. In simulations with 2.4 and 0.8 km horizontal resolution, mountain waves with horizontal wavelengths larger than 15 km were resolved, but exhibited too small amplitudes and too high energy and momentum fluxes. Simulated fluxes could be reduced by either increasing the vertical model grid resolution or by enhancing turbulent diffusion in the model, which is comparable to an improved representation of small-scale nonlinear wave effects.
| Item URL in elib: | https://elib.dlr.de/106202/ | ||||||||||||||||||||||||||||||||||||||||||||||||||||
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| Document Type: | Article | ||||||||||||||||||||||||||||||||||||||||||||||||||||
| Title: | Observed versus simulated mountain waves over Scandinavia - improvement of vertical winds, energy and momentum fluxes by enhanced model resolution? | ||||||||||||||||||||||||||||||||||||||||||||||||||||
| Authors: |
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| Date: | March 2017 | ||||||||||||||||||||||||||||||||||||||||||||||||||||
| Journal or Publication Title: | Atmospheric Chemistry and Physics | ||||||||||||||||||||||||||||||||||||||||||||||||||||
| Refereed publication: | Yes | ||||||||||||||||||||||||||||||||||||||||||||||||||||
| Open Access: | Yes | ||||||||||||||||||||||||||||||||||||||||||||||||||||
| Gold Open Access: | Yes | ||||||||||||||||||||||||||||||||||||||||||||||||||||
| In SCOPUS: | Yes | ||||||||||||||||||||||||||||||||||||||||||||||||||||
| In ISI Web of Science: | Yes | ||||||||||||||||||||||||||||||||||||||||||||||||||||
| Volume: | 17 | ||||||||||||||||||||||||||||||||||||||||||||||||||||
| DOI: | 10.5194/acp-17-4031-2017 | ||||||||||||||||||||||||||||||||||||||||||||||||||||
| Page Range: | pp. 4031-4052 | ||||||||||||||||||||||||||||||||||||||||||||||||||||
| Publisher: | Copernicus Publications | ||||||||||||||||||||||||||||||||||||||||||||||||||||
| ISSN: | 1680-7316 | ||||||||||||||||||||||||||||||||||||||||||||||||||||
| Status: | Published | ||||||||||||||||||||||||||||||||||||||||||||||||||||
| Keywords: | GW-LCYCLE I, gravity waves, numerical modeling, airborne observations | ||||||||||||||||||||||||||||||||||||||||||||||||||||
| HGF - Research field: | Aeronautics, Space and Transport | ||||||||||||||||||||||||||||||||||||||||||||||||||||
| HGF - Program: | Space | ||||||||||||||||||||||||||||||||||||||||||||||||||||
| HGF - Program Themes: | Earth Observation | ||||||||||||||||||||||||||||||||||||||||||||||||||||
| DLR - Research area: | Raumfahrt | ||||||||||||||||||||||||||||||||||||||||||||||||||||
| DLR - Program: | R EO - Earth Observation | ||||||||||||||||||||||||||||||||||||||||||||||||||||
| DLR - Research theme (Project): | R - Atmospheric and climate research | ||||||||||||||||||||||||||||||||||||||||||||||||||||
| Location: | Oberpfaffenhofen | ||||||||||||||||||||||||||||||||||||||||||||||||||||
| Institutes and Institutions: | Institute of Atmospheric Physics > Transport Meteorology Institute of Atmospheric Physics Institute of Atmospheric Physics > Lidar ?? undefined ?? | ||||||||||||||||||||||||||||||||||||||||||||||||||||
| Deposited By: | Wagner, Johannes | ||||||||||||||||||||||||||||||||||||||||||||||||||||
| Deposited On: | 23 Sep 2016 09:50 | ||||||||||||||||||||||||||||||||||||||||||||||||||||
| Last Modified: | 14 Nov 2023 09:40 |
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- Observed versus simulated mountain waves over Scandinavia - improvement of vertical winds, energy and momentum fluxes by enhanced model resolution? (deposited 23 Sep 2016 09:50) [Currently Displayed]
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