Selected Talks (home)
• Ringler, T.D., 2011: Approaching the Problem of Regional Climate Simulation through a Global, Multi-Resolution Modeling Approach: Successes and Challenges, Invited Talk, American Geophysical Union Meeting, San Francisco, CA, December 8, 2011. LA-UR-11-12176 (pdf).
• Ringler, T.D., 2011: Why We Need to Develop a Multi-Resolution Approach to Global Earth System Modeling, Presented to Panel for a National Strategy for Advancing Climate Modeling, National Academy of Sciences, Washington, D.C., October 3, 201. LA-UR-11-11645 (pdf).
• Ringler, T.D., 2011: Multi-Resolution Global Climate Modeling based on Spherical Centroidal Voronoi Tessellations, IMUM 2011, Bremerhaven, Germany, August 22-25, 2011. LA-UR 11-10028 (pdf).
• Ringler, T.D., 2011: Anthropogenic Climate Change: What We Know, What We Think We Know and What We Wish We Knew, Presented to Leadership Los Alamos, Environmental Session, Valle Caldera, New Mexico, April 15, 2011 (pdf).
• Ringler, T.D., 2011: Analysis of the MPAS Hydrostatic Dynamical Core in Aqua-Planet Mode, NCAR CCSM Atmosphere Modeling Working Group, Boulder, Colorado, February 15, 2011. LA-UR-11-10028 (pdf).
• Ringler, T.D., 2010: Model for Prediction Across Scales: Status and Outlook, NCAR CCSM Ocean Modeling Working Group, Santa Fe, New Mexico, December 9, 2010. LA-UR 10-02460 (pdf).
• Ringler, T.D., 2010: Toward Multi-Scale Simulation of the Ocean and Atmosphere, Earth System Modeling Symposium, Tsinghua University, Beijing China, July 23, 2010. LA-UR 10-02460 (pdf).
• Ringler, T.D. and D. Jacobsen, 2010 : Exploring a Multi-Resolution Approach within the Shallow-Water System. Numerical Hierarchies in Climate Modeling, Institute for Pure and Applied Mathematics, Los Angeles, California, April 14, 2010. LA-UR 10-02460 (pdf).
• Ringler, T.D., 2010 :Model for Prediction Across Scales: A Multi-Resolution Approach to Climate System Modeling. DOE Integrated Climate Change Modeling Science Team Meeting, Gaithersburg, Maryland, March 29, 2010. LA-UR 09-05207 (pdf).
• Ringler, T.D., 2009: An Ocean Dynamical Core with Local Mesh Refinement, NCAR CCSM Ocean Modeling Working Group, Boulder, Colorado, December 10, 2009. LA-UR 09-05207 (pdf).
• Ringler, T.D., 2009: A Consideration of Two-Time Level Schemes, NCAR CCSM Ocean Modeling Working Group, Boulder, Colorado, December 10, 2009. LA-UR 09-05207 (pdf).
• Ringler, T.D., 2009: Numerical Treatment of Energy and Potential Vorticity on Arbitrarily Structured C-grid, PDEs on the Spheres, Santa Fe, New Mexico, April 30, 2009. LA-UR 09-01365 (pdf)
• Ringler, T.D., 2009: Overview of Regional Climate Impacts in the Southwest: The Known, The Uncertain and The Unknown, Climate Change Adaptation Workshop for Natural Resource Managers in the Jemez Mountains Landscape, Los Alamos, New Mexico, April 21, 2009. LA-UR 09-02479 (pdf)
• Ringler, T.D., 2009: Bridging Scales in Climate System Modeling, Next Generation Models on Climate Change and Sustainability for Advanced High Performance Computing Facilities, Oak Ridge, Tennessee, March 16, 2009, LA-UR 09-00465 (pdf)
• Ringler, T.D., 2008: Uncertainty in the Simulation of Future Climate Conditions, LANL Workshop on Uncertainty Quantification, Los Alamos, New Mexico, December 11, 2008. LA-UR-08-04366 (pdf).
• Ringler, T.D., 2008: Variouis forms of F=ma: building a discrete model of force balance that does what we want it to do, NCAR ASP 2008 Summer Colloquium: Numerical Techniques for Global Atmospheric Models, Boulder, Colorado, June 9, 2008. LA-UR-08-04366 (pdf).
• Ringler, T.D., 2008: Triangles, Squares or Hexagons?, NCAR ASP 2008 Summer Colloquium: Numerical Techniques for Global Atmospheric Models, Boulder, Colorado, June 10, 2008. LA-UR-08-04361 (pdf)
• Ringler, T.D., 2008: Introduction to Voronoi Tessellations and Delaunay Triangulations, NCAR ASP 2008 Summer Colloquium: Numerical Techniques for Global Atmospheric Models, Boulder, Colorado, June 11, 2008. LA-UR-08-04365 (pdf).
• Ringler, T.D., 2008: Transport and a Goldilocks Search, NCAR ASP 2008 Summer Colloquium: Numerical Techniques for Global Atmospheric Models, Boulder, Colorado, June 12, 2008. LA-UR-08-04364 (pdf).
• Ringler, T.D., 2007: Part I: Spherical Centroidal Voronoi Tessellations: Theory, Analysis, and Practical Issues. Kyoto, Japan, December 3, 2007. LA-UR-07-8349 (pdf or swf)
• Ringler, T.D., 2007: Part II: Spherical Centroidal Voronoi Tessellations: Theory, Analysis, and Practical Issues. Kyoto, Japan, December 3, 2007. LA-UR-07-8349 (pdf or swf)
• Ringler, T.D., 2007: Part I: Regional Climate Prediction: Prospects and Challenges. Portland, Oregon, September 5, 2007. LA-UR-07-5637 (pdf or swf)
• Ringler, T.D., M. McCabe, N. McDowell, E. Springer, 2007: Part II: Climate Change in the Southwest United States: An Integrated Approach to Understanding Ecological Change. Portland, Oregon, September 5, 2007. LA-UR-07-5637 (pdf)
• Ringler, T.D. Voronoi Tessellations for Ocean Modeling: Methods, Modes, and Conservation, Workshop on Numerical Methods in Ocean Models, Bergen, Norway, August 23, 2007. LA-UR-07-5635 (pdf or swf)
• Ringler, T.D., L. Ju, and M. Gunzburger, 2007: Using Spherical Centroidal Voronoi Tessellations in Climate System Modeling, SIAM Conference on Mathematical and Computional Issues in the Geosciences, Santa Fe, New Mexico, March 22, 2007. LA-UR-07-1541 (pdf or swf)
• Ringler, T.D., 2006: Complex Systems: Energy, Climate, Environment, and Risk Assessment, Invited Presentation, LANL Grand Challenges Workshop, Los Alamos, November 1, 2006. LA-UR-06-7931 (pdf or swf)
• Ringler, T.D., 2006: Grids for Climate System Modeling, TSC Workshop on Meshing Challenges for LANL Simulations, Los Alamos, New Mexico, October 30, 2006. LA-UR-06-8249 (pdf or swf)
• Ringler, T.D., 2006: Risk Analysis and Climate Change, Presented to the PARADIGM Decisions Applications Group, Los Alamos, New Mexico, October 10, 2006. LA-UR-06-8248 (pdf or swf)
• Ringler, T.D., 2006: New numerical methods in ocean general circulation modeling: Voronoi tessellations and floating vertical coordinates, Monterey, California, June 26, 2006. LA-UR-06-2342 (pdf or swf)
----------- All talks below were developed before I joined LANL
• Ringler, T.D., 2005: Challenges in Coupled Climate Model Development, Presented to the Coupled Ocean Sea-Ice Modeling Group, Los Alamos, New Mexico, May 16, 2005. (pdf)
• Ringler, T.D., 2003: Comparing Truncation Error to PDE Solution Error on Spherical Voronoi Tessellations. Presented at the Workshop on Current Development of Shallow-Water Models on the Sphere, March 10, 2003, Munich, Germany. (pdf)
• Ringler, T.D., 2003: An Integrated Approach to Coupled Climate Modeling based on Geodesic Grids and Quasi-Lagrangian Vertical Coordinates. Invited Presentation at the Max Planck Institute for Meteorology, February 27, 2003, Hamburg, Germany. (pdf)
• Ringler, T.D. and D.A. Randall, 2002: Development of an energy conserving numerical scheme suitable for geodesic grids. Presented at the CCSR Workshop for the Next Generation Climate Models, March 4-8, 2002, Awaji-Yumebutai, Japan. (pdf)
• Ringler, T.D. and D.A. Randall, 2002: Interactions of monsoons and anticyclones. Presented at the 13th Symposium on Global Change and Climate Variations, January 14, 2002, Orlando Florida. (pdf)
• Ringler, T.D. and D.A. Randall, 2001: Energy, geostrophic adjustment, and a momentum analog to the Z-grid. Presented at 7th Workshop on the Solution of Partial Differential Equations on the Sphere, May 16-18, 2001, Montreal, Canada. (pdf)
• Ringler, T.D., R. Heikes, and D.A. Randall, 1999: Modeling the Atmospheric General Circulation Using a Spherical Geodesic Grid: A New Class of Dynamical Cores. Invited Presentation, NCAR CGD Seminar Series. May 6, 1999, Boulder, Colorado. (pdf)