Prof. Dr. Matthias Ehrhardt
Prof. Dr. Michael Günther
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Vorlesung im Wintersemester 2013/14:
(This course will be given in English)
Preliminary Discussion:
Tuesday, October 22, 2013 at 16:45, Room G.14.34
Contents:
In this lecture we will follow closely the book of Lauritzen at al. and discuss
recent developments in numerical techniques for global atmospheric models, i.e.
we will review the typical steps to set up a global atmospheric model.
Hereby we will discuss concisely the following items:
Part I Equations of Motion and Basic Ideas on Discretizations
- The Design of Atmospheric Model Dynamical Cores
- Waves, Hyperbolicity and Characteristics
- Horizontal Discretizations
- Vertical Discretizations
- Time Discretization
- Stabilizing Fast Waves
Part II Conservation Laws, Finite-Volume Methods, Remapping
Techniques and Spherical Grids
- Momentum, Vorticity and Transport: Considerations in the Design of a Finite-Volume Dynamical Core
- Atmospheric Transport Schemes: Desirable Properties and a Semi-Lagrangian View on Finite-Volume Discretizations
- Emerging Numerical Methods for Atmospheric Modeling
- Voronoi Tessellations and Their Application to Climate and Global Modeling
Part III Practical Considerations for Dynamical Cores in Weather and Climate Models
- Conservation in Dynamical Cores
- Conservation of Mass and Energy for the Moist Atmospheric Primitive Equations on Unstructured Grids
- Diffusion, Filters and Fixers in Atmospheric General Circulation Models
- Kinetic Energy Spectra and Model Filters
- The Dynamical Core in the Development of Weather and Climate Models
- Refactoring Scientific Applications for Massive Parallelism
Audience:
Students from "Computer Simulation in Science", master students of applied
and numerical mathematics but also students from atmospheric modeling.
Remarks:
Prerequisites:
Analysis I-II, Lineare Algebra I-II, Numerik
gewöhnlicher und partieller Differentialgleichungen
Lecture Notes:
-
R. Klein,
S. Vater,
E. Päschke,
D. Ruprecht,
Multiple Scales Methods in Meteorology, in: H. Steinrück (ed.),
Asymptotic Methods in Fluid Mechanics: Survey and Recent Advances,
CISM Courses and Lectures 523, Springer, 2011, pp. 127-196.
- P.H. Lauritzen, C. Jablonowski, M.A. Taylor, R.D. Nair (Eds.),
Numerical Techniques for Global Atmospheric Models,
Lecture Notes in Computational Science and Engineering 80, Springer, 2011.
Literature:
- A.J. Chorin, J.E. Marsden,
A Mathematical Introduction to Fluid Mechanics, Springer, 2000.
- D.R. Durran,
Numerical Methods for Fluid Dynamics: With Applications to Geophysics,
Texts in Applied Mathematics 32, Springer, 2nd ed. 2010.
- B. Gustafsson,
Fundamentals of Scientific Computing,
Texts in Computational Science and Engineering 8, Springer, 2011.
- M.H. Holmes, Introduction to Perturbation Methods, Springer, 1995.
- J. Kevorkian, J.D. Cole,
Multiple Scale and Singular Perturbation Methods,
Springer, Applied Mathematical Sciences 114, 1996.
- R.J. LeVeque,
Numerical Methods for Conservation Laws,
Birkhäuser, 1990.
- A.J. Majda,
Introduction to P.D.E.'s and Waves for the Atmosphere and Ocean,
Courant Lecture Notes 9,
American Mathematical Society & Courant Institute of Mathematical Sciences, 2002.
- W. Schneider, Mathematische Methoden der Strömungsmechanik, Vieweg, 1978.
- A. Staniforth, J. Thuburn,
Horizontal grids for global weather and climate prediction models: a review,
Quart. J. Royal Meteorolog. Soc. 138 (2012), 1-26.
- E. Toro,
Riemann Solvers and Numerical Methods for Fluid Dynamics: A Practical Introduction,
Springer, 3rd ed. 2009.
- Li Dong, Bin Wang,
Trajectory-Tracking Scheme in Lagrangian Form for Solving Linear Advection Problems: Preliminary Tests,
Mon. Weath. Rev. 140 (2012), 650-663.
- N. Hurl, W. Layton, Y. Li, C. Trenchea,
Stability Analysis of the Crank-Nicolson-Leap-Frog method with the Robert-Asselin-Williams time filter,
Preprint 2013.
- R.J. Smith,
Minimizing time-stepping errors in numerical models of the atmosphere and ocean,
Master's thesis, University of Reading (2010).
- J.G. Verwer,
Convergence and component splitting for the Crank-Nicolson-Leap-Frog integration method
Modelling, Analysis and Simulation (2009), 1-15.
Links