Course Details
Subject {L-T-P / C} : ER5601 : Numerical Weather Prediction { 3-0-0 / 3}
Subject Nature : Theory
Coordinator : Prof. Krishna Kishore Osuri
Syllabus
Overview of numerical weather prediction, Different spatial and temporal scales in NWP, Basic structure of numerical models and their applications, Governing equations, Map projections, Vertical coordinate system Global models, Regional models, Mesoscale models, Hydrostatic & non-hydrostatic assumption.
Numerical methods – Finite difference method-Forward and centered finite difference methods, Semi – implicit method and computational instability Computation of Jacobian and Laplacian Solution of Helmholtz and Poisson equations using relaxation method Spectral method, spherical harmonics
Waves in the atmosphere and stability of numerical computations and filtering approximations.
Primitive equation models – Two level primitive equation model multilevel primitive equation models. Sigma coordinate system Parameterization of sub-grid scale physical processes: planetary boundary layer, moist microphysics physics, cumulus convection, radiation, air-sea interaction processes, and land surface processes.
Data assimilation: Objective analysis schemes, continuous data assimilation techniques - 3D & 4D Variational assimilation initialization. Predictability and Ensemble forecasting,
Course Objectives
- Educate the students for conceptual physics and dynamics involved in the weather forecast.
- Numerical techniques and methods of solving equations are discussed.
Course Outcomes
Students are trained for understanding and solving the fundamental equations.
Essential Reading
- Holton J. R. and G. J. Hakim, An Introduction to Dynamical Meteorology, Academic Press (ELSEVIER) , Fifth Edition, 2013
- Lynch A. H. and and J. J. Cassano, Applied Atmospheric Dynamics, John Wiley and Sons Ltd , 2005
Supplementary Reading
- Haltiner G.J., Numerical Weather Prediction, John Wiley & Sons Inc , 1971
- Haltiner G. J. and F.L.Martin, Dynamical and Physical Meteorology, McGraw-Hill Publcations , 1957