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People at NCAR: Peter Hjort Lauritzen



The National Center for Atmospheric Research Advanced Study Program Summer Colloquium on

Numerical Techniques for Global Atmospheric Models

June 1-13, 2008, Boulder, Colorado, U.S.A.

The Primary Organizers are

Peter H. Lauritzen (NCAR), Christiane Jablonowski (University of Michigan), Mark Taylor (Sandia National Laboratories) and Ramachandran D. Nair (NCAR)

Additional support provided by NASA and DOE.

Participating models

ICON (ICOsahedral Non-hydrostatic General Circulation Model), MPI.

(GEF (Global Eta Framework), University of Maryland).

OLAM (ocean-land-atmosphere model), Duke University.

GEOS (Goddard Earth Observing System), NOAA-GFDL/NASA

BQ_Core (B-grid Quadratic Upstream), GISS, NASA.

MITgcm (Massachusetts Institute of Technology General Circulation Model), MIT.

CSUgcm (Colorado State University General Circulation Model), CSU.

GME, German Weather Service.

CAM (Communicty Atmosphere Model), NCAR.

HOMME (High Order Method Modeling Environment), NCAR/Sandia.

Presentations

Introduction, Peter Hjort Lauritzen, CGD, NCAR.

Earth System Curator, Sylvia Murphy, Julien Chastang, Luca Cinquini, NCAR.

Use of Supercomputers, Mike Page, CISL, NCAR.

Basic Dynamics I, John Thuburn, School of Engineering, Computer Science and Mathematics, University of Exeter, UK.

Basic Dynamics II, John Thuburn, School of Engineering, Computer Science and Mathematics, University of Exeter, UK.

The Challenges of Massively Parallel Computing, Rich Loft, CISL, NCAR.

Idealized Test Cases for Dynamical Core Experiments, Christiane Jablonowski, Department of Atmospheric, Oceanic and Space Sciences, University of Michigan.

Horizontal Discretizations, John Thuburn, School of Engineering, Computer Science and Mathematics, University of Exeter, UK.

Finite-Volume Methods in Meteorology - a semi-Lagrangian view, Peter Hjort Lauritzen, CGD, NCAR.

The use of modeling frameworks to facilitate interoperability, Cecelia DeLuca (ESMF, NCAR), Bill Putman (GSFC, NASA) and David Neckels (ESMF, NCAR).

Vertical Discretizations, John Thuburn, School of Engineering, Computer Science and Mathematics, University of Exeter, UK.

Adaptive Grids for Atmospheric General Circulation Models, Christiane Jablonowski, Department of Atmospheric, Oceanic and Space Sciences, University of Michigan.

Tiling the sphere with quadrilaterals: Cubed-sphere grids and their challenges for numerical methods, Mark Taylor, Sandia National Laboratories.

Conservation, John Thuburn, School of Engineering, Computer Science and Mathematics, University of Exeter, UK.

Numerical Noise: The Pros and Cons of Filters, Diffusion and Damping Mechanisms, Christiane Jablonowski, Department of Atmospheric, Oceanic and Space Sciences, University of Michigan.

A Little Bit More on Waves and Turbulence, Joe Tribbia, CGD, NCAR.

Emerging Methods For Conservation Laws, Ram Nair, IMAGe, NCAR.

Different Forms of the Governing Equations for Atmospheric Motions, Dale Durran, Department of Atmospheric Sciences, University of Washington.

Various forms of F=ma: Building a discrete model of force balance that does what we want it to do, Todd Ringler, Theoretical Division, LANL.

Time Differencing: Basic Techniques, Dale Durran, Department of Atmospheric Sciences, Universisty of Washington.

Dynamical Cores: Design and the Designer, Richard B. Rood, University of Michigan.

Triangles, Squares or Hexagons?, Todd Ringler, Theoretical Division, LANL.

Time Differencing: Physically Insignificant Fast Waves, Dale Durran, Department of Atmospheric Sciences, University of Washington.

Kinetic Energy Spectra and Model Filters, Bill Skamarock, MMM, NCAR.

Introduction to Voronoi Diagrams and Delaunay Triangulations, Todd Ringler, Theoretical Division, LANL.

Transport and a Goldilocks Search, Todd Ringler, Theoretical Division, LANL.

Spectral Transform Method: Eulerian and Semi-Lagrangian, David Williamson, CGD, NCAR.

Geodesic Grids and Hybrid Vertical Coordinates, David A. Randall, Department of Atmospheric Science, CSU.

Postdoctoral Fellowship Opportunities at the UCAR and NCAR in Boulder Colorado, Maura Hagan, ASP, NCAR.

Earth System Curator

Support was provided by the Earth System Curator (ESC) project working together with the Earth System Grid (ESG). This team provided long term archive of the 1.1 TB of data and collected metadata on each model component and simulation. Together, the metadata and data will significantly enhance the post colloquium component intercomparison. The long term goal of the ESC project is to facilitate the use of model metadata into scientific workflows and model intercomparison projects.

View metadata and idealized test case data for the models that participated in the colloquium: ESG-CET.

Test case document

Idealized test cases for the dynamical cores of Atmospheric General Circulation Models: A proposal for the NCAR ASP 2008 summer colloquium (download/view)

Fortran code to generate initial conditions

Test case 1 and 2: testcases_jw.f90.

Test case 3,4,5 and 6: testcases_3_4_5_6_stand_alone.f90.

Poster on colloquium

Poster on colloquium presented at the 13th Annual CCSM Workshop, The Village at Breckenridge, Breckenridge, CO, 17-19 June, 2008.

Photos

Group photo, Organizers

 

 

Links:
NCAR
Personal home page of Peter Hjort Lauritzen

Last updated: 23-June-2008
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