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Kärcher, Bernd and Podglajen, Aurélien (2019) A Stochastic Representation of Temperature Fluctuations Induced by Mesoscale Gravity Waves. Journal of Geophysical Research: Atmospheres, 124 (21), pp. 11506-11529. Wiley. DOI: 10.1029/2019JD030680 ISSN 0148-0227
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Official URL: https://elib.dlr.de/130763/1/JGR124_2019JD030680_2019.pdf
Abstract
Ubiquitous mesoscale gravity waves generate high cooling rates important for cirrus formation. We make use of long‐duration balloon observations to devise a probabilistic model describing mesoscale temperature uctuations (MTF) away from strong wave sources. We define background conditions based on observed probability distributions of temperature and underlying vertical wind speed fluctuations. We show theoretically that MTF are subject to damping at a rate near the Coriolis frequency when the vertical wind speed fluctuations are autocorrelated over a fraction of a Brunt‐Väisälä period.
| Item URL in elib: | https://elib.dlr.de/130763/ | |||||||||
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| Document Type: | Article | |||||||||
| Title: | A Stochastic Representation of Temperature Fluctuations Induced by Mesoscale Gravity Waves | |||||||||
| Authors: |
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| Date: | 13 November 2019 | |||||||||
| Journal or Publication Title: | Journal of Geophysical Research: Atmospheres | |||||||||
| Refereed publication: | Yes | |||||||||
| Open Access: | Yes | |||||||||
| Gold Open Access: | No | |||||||||
| In SCOPUS: | Yes | |||||||||
| In ISI Web of Science: | Yes | |||||||||
| Volume: | 124 | |||||||||
| DOI : | 10.1029/2019JD030680 | |||||||||
| Page Range: | pp. 11506-11529 | |||||||||
| Publisher: | Wiley | |||||||||
| ISSN: | 0148-0227 | |||||||||
| Status: | Published | |||||||||
| Keywords: | cirrus clouds, gravity waves, ice nucleation parameterization, updraft speed variability, mesoscale | |||||||||
| HGF - Research field: | Aeronautics, Space and Transport | |||||||||
| HGF - Program: | Space | |||||||||
| HGF - Program Themes: | Earth Observation | |||||||||
| DLR - Research area: | Raumfahrt | |||||||||
| DLR - Program: | R EO - Erdbeobachtung | |||||||||
| DLR - Research theme (Project): | R - Vorhaben Atmosphären- und Klimaforschung | |||||||||
| Location: | Oberpfaffenhofen | |||||||||
| Institutes and Institutions: | Institute of Atmospheric Physics > Atmospheric Trace Species | |||||||||
| Deposited By: | Kärcher, Prof. Bernd | |||||||||
| Deposited On: | 20 Nov 2019 07:17 | |||||||||
| Last Modified: | 27 May 2020 12:36 |
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