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Internal wave dynamics in the atmosphere, take-home messages - Lecture 3

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Authors : Klein, Rupert (Author of the conference)
CIRM (Publisher )

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Abstract : Earth's atmosphere hosts a rich spectrum of phenomena that involve interactions of a variety of processes across many length and time scales. A systematic approach to analyzing these scale dependent processes is a core task of theoretical meteorology and a prerequi- site to constructing reliable computational models for weather forecasting and climate simulation.

Lecture I The fundamental tools of similarity theory and formal single scale asymptotics will allow us to systematize the large zoo of scale-dependent model equations that one finds in modern textbooks of theoretical meteorology.

Lecture II The meteorological analogue of the incompressible flow equations are the ”anelastic” and ”pseudo-incompressible” models. Here we will learn how the presence of internal gravity waves in the atmosphere implies an asymptotic three-scale problem that renders the formal derivation and justification of these models much more intricate than the classical low Mach number derivation of the incompressible flow equations.

Lecture III The mechanisms by which tropical storms develop into hurricanes and typhoons are still under intense debate despite decades of research. A recent theory for the dynamics of strongly tilted atmospheric vortices will show how asymptotic methods help structuring this scientific debate, and how they offer new angles of scientific attack on the problem.

Lecture * If time permits, I will also summarize some ramifications of the scaling regimes and scaling theories considered in Lectures I-III on the construction of reliable computational methods.

Keywords : atmospheric physics; PDEs in connection with geophysics

MSC Codes :
35Qxx - Equations of mathematical physics and other areas of application
86A35 - Atmospheric physics
35Q86 - PDEs in connection with geophysics

Additional resources :
http://smai.emath.fr/cemracs/cemracs19/resumesPDF/rupertklein.pdf

    Information on the Video

    Film maker : Hennenfent, Guillaume
    Language : English
    Available date : 30/08/2019
    Conference Date : 18/07/2019
    Subseries : Research School
    arXiv category : Atmospheric and Oceanic Physics ; Fluid Dynamics
    Mathematical Area(s) : Mathematical Physics ; PDE
    Format : MP4 (.mp4) - HD
    Video Time : 01:12:35
    Targeted Audience : Researchers
    Download : https://videos.cirm-math.fr/2019-07-18_Klein_Part3.mp4

Information on the Event

Event Title : CEMRACS : Geophysical Fluids, Gravity Flows / CEMRACS : Fluides géophysiques, écoulements gravitaires
Event Organizers : Duran, Arnaud ; Fabrèges, Benoit ; Lafitte, Pauline ; Lagoutière, Frédéric ; Marche, Fabien ; Rousset, Frédéric
Dates : 15/07/2019 - 23/08/2019
Event Year : 2019
Event URL : https://conferences.cirm-math.fr/2084.html

Citation Data

DOI : 10.24350/CIRM.V.19548303
Cite this video as: Klein, Rupert (2019). Internal wave dynamics in the atmosphere, take-home messages - Lecture 3. CIRM. Audiovisual resource. doi:10.24350/CIRM.V.19548303
URI : http://dx.doi.org/10.24350/CIRM.V.19548303

See Also

Bibliography

  • LIPPS, Franik B. et HEMLER, Richard S. A scale analysis of deep moist convection and some related numerical calculations. Journal of the Atmospheric Sciences, 1982, vol. 39, no 10, p. 2192-2210. - https://doi.org/10.1175/1520-0469(1982)039%3C2192:ASAODM%3E2.0.CO;2

  • DURRAN, Dale R. Improving the anelastic approximation. Journal of the atmospheric sciences, 1989, vol. 46, no 11, p. 1453-1461. - https://doi.org/10.1175/1520-0469(1989)046%3C1453:ITAA%3E2.0.CO;2

  • MONTGOMERY, Michael T., WANG, Zhuo, et DUNKERTON, Timothy J. Intermediate and high resolution numerical simulations of the transition of a tropical wave critical layer to a tropical storm. Atmospheric Chemistry & Physics Discussions, 2009, vol. 9, no 6. -

  • PÄSCHKE, Eileen, MARSCHALIK, Patrik, OWINOH, Antony Z., et al. Motion and structure of atmospheric mesoscale baroclinic vortices: dry air and weak environmental shear. Journal of Fluid Mechanics, 2012, vol. 701, p. 137-170. - https://doi.org/10.1017/jfm.2012.144

  • DÖRFFEL, Tom, PAPKE, Ariane, KLEIN, Rupert, et al. Intensification of tilted atmospheric vortices by asymmetric diabatic heating. arXiv preprint arXiv:1708.07674, 2017. - https://arxiv.org/abs/1708.07674

  • MONTGOMERY, Michael T. et KALLENBACH, Randall J. A theory for vortex Rossby‐waves and its application to spiral bands and intensity changes in hurricanes. Quarterly Journal of the Royal Meteorological Society, 1997, vol. 123, no 538, p. 435-465. - https://doi.org/10.1002/qj.49712353810

  • NOLAN, David S., MONTGOMERY, Michael T., et GRASSO, Lewis D. The wavenumber-one instability and trochoidal motion of hurricane-like vortices. Journal of the atmospheric sciences, 2001, vol. 58, no 21, p. 3243-3270. - https://doi.org/10.1175/1520-0469(2001)058%3C3243:TWOIAT%3E2.0.CO;2

  • REASOR, Paul D., MONTGOMERY, Michael T., et GRASSO, Lewis D. A new look at the problem of tropical cyclones in vertical shear flow: Vortex resiliency. Journal of The atmospheric sciences, 2004, vol. 61, no 1, p. 3-22. - https://doi.org/10.1175/1520-0469(2004)061%3C0003:ANLATP%3E2.0.CO;2

  • JONES, Sarah C. The evolution of vortices in vertical shear. I: Initially barotropic vortices. Quarterly Journal of the Royal Meteorological Society, 1995, vol. 121, no 524, p. 821-851. - https://doi.org/10.1002/qj.49712152406

  • FRANK, William M. et RITCHIE, Elizabeth A. Effects of environmental flow upon tropical cyclone structure. Monthly weather review, 1999, vol. 127, no 9, p. 2044-2061. - https://doi.org/10.1175/1520-0493(1999)127%3C2044:EOEFUT%3E2.0.CO;2

  • LORENZ, Edward N. Generation of available potential energy and the intensity of the general circulation. Dynamics of climate, 1960. -

  • PÄSCHKE, Eileen, MARSCHALIK, Patrik, OWINOH, Antony Z., et al. Motion and structure of atmospheric mesoscale baroclinic vortices: dry air and weak environmental shear. Journal of Fluid Mechanics, 2012, vol. 701, p. 137-170. - https://doi.org/10.1017/jfm.2012.144



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