Lehrende:
Dr. Sergiy Vasylkevych; Prof. Dr. Nedjeljka Zagar
Veranstaltungsart:
Vorlesung + Übung
Anzeige im Stundenplan:
63-861
Unterrichtssprache:
Deutsch / Englisch
Min. | Max. Teilnehmerzahl:
1 | 25
Weitere Informationen:
Voraussetzungen für die Teilnahme:
- verbindliche: basic knowledge of geophysical fluids and numerical methods
- empfohlene: Kenntnisse in der theoretischen Meteorologie oder Ozeanographie
Der Kurs wird als Wahlfach angeboten. Er eignet sich für den MSc Meteorologie und Ozeanographie und Integrated Climate System, steht aber auch für fortgeschrittene BSc Studenten und Studenten aus anderen naturwissenschaftlich und mathematisch ausgerichteten Studiengängen offen. Er ist besonders den Studenten empfohlen, die von außerhalb nach UHH kommen um ihr MSc-Studium fortzusetzen.
Unterrichtssprache: English, Lehrmaterial: Skript auf Grundlage von Folien, zusätzliche Literatur in englischer und deutscher Sprache.
Kommentare/ Inhalte:
Waves, basic concepts: amplitude, phase, group and phase velocity, wave number and wave vector, dispersion. Linear and non-linear waves.
Surface gravity waves in a non-rotating shallow water system.
Effects of rotation. Rossby waves, geostrophic balance and Rossby radius of deformation. Potential vorticity and conservation laws.
Inertio-gravity waves in a rotating fluid. Kelvin and Poincaré waves. Topographic effects.
Waves in tropics. The effect of Earth’s curvature, the Equatorial beta plane, equatorially trapped waves. The differences between mid-latitude and equatorial dynamics.
Waves on the sphere. Shallow water and primitive equations on the sphere. Normal modes of atmospheric motion. The wave spectra in Earth’s atmosphere and in the deep ocean.
Waves generated by horizontal boundaries. Poincaré and Kelvin waves in a channel. Coastal and continental shelf waves.
Free waves in the presence of horizontal temperature gradient. Barotropic and baroclinic instabilities.
Lernziel:
The course will provide introduction into the various types of wave motion playing important part in the atmospheric and ocean dynamics. Theoretical knowledge will be supplemented by practical exercises with simplified numerical models of different complexity.
The course will provide introduction into the various types of wave motion playing important part in the atmospheric and ocean dynamics. Theoretical knowledge will be supplemented by practical exercises with simplified numerical models of different complexity. The students will receive an overview of basic wave concepts important for the atmospheric and ocean dynamics, gain hands on experience in analyzing specific phenomena, such as e.g. Rossby and gravity waves, geostrophic adjustment, barotropic instability, as well as practical skills in designing the numerical experiments and interpreting their results.
Vorgehen:
Lectures and exercises based on numerical labs of various complexity. Each lab covers some aspects of lectures and students perform simple numerical experiments under the guidance of a teacher, prepare their answers to questions, and write brief reports.
Lectures by Prof. Dr. Nedjeljka Žagar will be in presence. Labs and lectures by Dr. Sergiy Vasylkevych will take place digitally.
Literatur:
Vallis, Geoffrey K., Atmospheric and Oceanic Fluid Dynamics: Fundamentals and Large-Scale Circulation, 2nd edition, Cambridge: Cambridge University Press, 2019, p.964
Gill, Adrian. Atmosphere-Ocean Dynamics. New York, NY: Academic Press, 1982, p. 662
Zusätzliche Hinweise zu Prüfungen:
Students are expected to submit a written report for each mandatory lab (5-6 labs). Reports are graded and their average grade is the final grade of the course.
Students are given an opportunity of oral exams for higher grade if requested.
