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Matthew R. Norman
InformationPh.D. Candidate & Research AssistantNorth Carolina State University Marine, Earth, & Atmospheric Sciences Climate Modeling Laboratory
ContactNCSU Campus Box 8208Raleigh, NC 27695 E-mail: mrnorman@ncsu.edu |
Research Interests
Undergraduate Research
- Stability of a second-order semi-implicit semi-Lagrangian (SISL) model
- On the Accuracy of Semi-Lagrangian Numerical Simulation of Internal Gravity Wave Motion in the Atmosphere
Master's Research
- Improved accuracy in conservative semi-Lagrangian transport in numerical models
- High-order conservative interpolation of geophysical data
- 3rd-Order temporal discretizations for semi-implicit semi-Lagrangian (SISL) models
Ph.D. Research
- Application of various central (e.g. Lax-Friedrichs and related) and upwind (e.g. Roe, flux-waves, HLLC) Godunov schemes to atmospheric flows
- Investigation of several approaches to multi-dimensionality and their effects on the isotropy and accuracy of the solutions to various atmospheric test cases
- Development of various 1-D sweep techniques for 2-D reconstructions and the subsequent isotropy and accuracy of the approximate solutions in multiple dimensions
- Investigation of the effects of reconstructing in state space instead of characteristic space for the atmospheric dynamical equations regarding accuracy and monotonicity
- Intercomparison of several sub-grid reconstructions for application to the atmospheric system with regard to accuracy, monotonicity, positivity, and consistency
- Implementation and evaluation of a Godunov-type atmospheric shallow-water model on cubed-sphere geometry utilizing the best candidates of the above investigations
- Implementation and evaluation of a 2-D x-z fully compressible, non-hydrostatic idealized model again using the best candidates of the above investigations
- Application of the global shallow-water model to investigate the nature of barotropic orographic-dynamic interaction in the tropics
- Possible development of a parallel version of the 2-D shallow water model for studying scalability of the numerical schemes
- Possible a development of a global 3-D non-hydrostatic compressible model on cubed-sphere geometry to solve the full set of atmospheric dynamical equations
Media
- Neutral Atmospheric Convection (2.0 Mb) - This is the standard 2-D convecting bubble in a dry neutral atmosphere test case using a Godunov-type model with a second-order approximate Riemann solver based on a flux wave decomposition. 160 x 80 cells are used. The second-order fluxes are limited with a van Albada limiter. Multidimensionality is achieved via an alternating dimensional split.
- Density Current (1.4 Mb) - This is a density current (advancing front) test case with the same model as before except using 500 x 200 cells.
Internships, Awards, Conferences, & Colloquia
- Summer Internships in Parallel Computational Science (SIParCS): Summer, 2007
- Cha-Cha Days: October 19-21, 2007
- Numerical Techniques for Global Atmospheric Models: June 2-13, 2008
- National Center for Atmospheric Research (NCAR) Advanced Study Program (ASP) Graduate Visitor: June 2008 - March 2009
- Department of Energy Computer Science Graduate Fellowship: August 2008 - present
Publications
- F. H. M. Semazzi, J. S. Scroggs, G. A. Pouliot, A. L. McKee-Burrows, Matthew Norman, V. Poojary, and Y.-M. Tsai, 2005: On the Accuracy of Semi-Lagrangian Numerical Simulation of Internal Gravity Wave Motion in the Atmosphere. Journal of the Meteorological Society of Japan, 83, 851-869.
- Norman, Matthew, 2008: Investigation of Higher-Order Accuracy for a Conservative Semi-Lagrangian Discretization of the Atmospheric Dynamical Equations. Master's Thesis, North Carolina State University.
- Norman, Matthew and R. Nair, 2008: Inherently Conservative Non-Polynomial Based Remapping Schemes: Application to Semi-Lagrangian Transport. Monthly Weather Review, in press.