Research

My most recent work is presented on the Plots and Movies page.

Publications

Submitted

  • P. Bosler, J. Kent, R. Krasny, and C. Jablonowski, 2015.  A Lagrangian particle method with remeshing for tracer transport on the sphere. Journal of Computational Physics.


Published

  • P. A. Bosler, E. L. Roesler, M. A. Taylor, and M. Mundt, 2015.  Stride Search: A general algorithm for storm detection in high resolution climate data.  Geoscientific Model Development Discussions, 8:7727-7765, doi:10.5194/gmdd-8-7727-2015.


  • P. Bosler, L. Wang, R. Krasny, and C. Jablonowski, 2014.  A Lagrangian particle/panel method for the barotropic vorticity equations on a rotating sphere.  Fluid Dynamics Research, 46:031406. (LINK)


  • P. H. Lauritzen, P. A. Ullrich, C. Jablonowski, P. Bosler, D. Calhoun, A. J. Conley, T. Enomoto, L. Dong, S. Dubey, O. Guba, A. B. Hansen, E. Kaas, J. Kent, J.-F. LaMarque, M. J. Prather, D. Reinert, W. C. Skamarock, B. Sorensen, M. A. Taylor, and J. B. White III, 2014. A standard test suite for two-dimensional linear transport on the sphere: Results from a collection of state-of-the-art schemes.  Geoscientific Model Development, 7:105-145. (LINK)


Presentations

  • P. Bosler. “Vorticity dynamics in rotating flow: Geophysical applications,” SIAM Conference on Analysis of Partial Differential Equations, Scottsdale AZ, December 7 — 10, 2015.
  • P. Bosler. “Adaptive refinement strategies and a Lagrangian particle method for geophyical flow,” SIAM Conference on Mathematical and Computational Issues in the Geosciences, Palo Alto CA, June 29 — July 2, 2015.
  • P. Bosler, J. Kent, R. Krasny, and C. Jablonowski. “Adaptive Lagrangian particle methods for global geophysical flow,” American Geophysical Union Fall Meeting, San Francisco CA, December 16, 2014.
  • P. Bosler, J. Kent, R. Krasny, and C. Jablonowski. “Adaptive Lagrangian particle methods for global geophysical flow,” Sandia National Laboratories Postdoctoral Research Forum, Albuquerque NM, December 11, 2014.
  • P. Bosler, R. Krasny, C. Jablonowski, and L. Wang. “Lagrangian particle methods for global atmospheric flow,” Partial Differential Equations on the Sphere, National Center for Atmospheric Research, Boulder CO.  April 7, 2014.
  • P. Bosler, R. Krasny, and C. Jablonowski. “Particle methods for geophysical flow on the sphere,” Sandia National Laboratories, Albuquerque NM. February  6, 2014.  
  • P. Bosler, R. Krasny, and C. Jablonowski. “Particle methods for geophysical flow on the sphere,” California Institute of Technology, Pasadena, CA.  January 7, 2014.  
  • P. Bosler, L. Wang, C. Jablonowski, and R. Krasny.  "Adaptive particle methods for barotropic vorticity dynamics on a rotating sphere," American Physical Society Division of Fluid Dynamics Annual Meeting, Pittsburgh, PA.  November 25, 2013.
  • P. Bosler, C. Jablonowski, and R. Krasny. "Methods for long-time Lagrangian transport on the sphere," SIAM Conference on Computational Science and Engineering, Boston MA. February 25, 2013.
  • P. Bosler,  C. Jablonowski, and R. Krasny.  "Particle methods for geophysical flow on the sphere," Solution of Partial Differential Equations on the Sphere, University of Cambridge, Isaac Newton Institute.  September 2012.
  • P. Bosler, Y. Pu, V. Shaskin, M. Duda, S.-H. Park, W.C. Skamarock, and J. Klemp. “Model for Prediction Across Scales (MPAS) : Dynmical core test case results.” Dynamical Core Model Intercomparison Project (DCMIP), National Center for Atmospheric Research, Boulder CO.  August 10, 2012.
  • P. Bosler, C. Jablonowski, and R. Krasny. "Particle methods for geophysical flow on the sphere," SIAM Annual Meeting, Minneapolis MN.  (Poster session).  July 2012.
  • P. Bosler, C. Jablonowski, and R. Krasny. "A Lagrangian particle method for scalar transport on the sphere." Workshop on Transport Schemes on the Sphere, National Center for Atmospheric Research (NCAR), Boulder CO.  March 2011.
  • P. Bosler, T. Campbell, and S. Murphy. "Metadata for the Coupled Ocean-Atmosphere Mesoscale Prediction System (COAMPS) using the Earth System Modeling Framework (ESMF)." Summer Internships in Parallel Computational Science (SIParCS), National Center for Atmospheric Research, Boulder CO.  August 2009.


Projects and Working Groups

GPU Hackathon, Oak Ridge Leadership Computing Facility

Oak Ridge National Laboratory hosted a GPU Hackathon to introduce participating scientists to OpenACC and next-generation computer architectures.  I was part of the Department of Energy’s climate modeling team for DOE’s Accelerated Climate Model for Energy (ACME).


Lagrangian Particle Methods (LPM)

 View movies

LPM is a fluid dynamics solver based on a Lagrangian formulation of the equations of motion and vortex methods for incompressible flow.   An incompressible flow solver is under development.  LPM is implemented in modern Fortran and relies on MPI for distributed memory parallelization.  

Currently LPM solves flows in the plane and on the surface of the sphere, and it has been aimed primarily at geophysical fluid flows related to atmospheric and oceanic modeling.  

LPM code is available at GitHub.


Particle Methods for Geophysical Flow on the Sphere
           View movies

My PhD thesis developed a Lagrangian numerical technique based on vortex methods to solve the barotropic vorticity equation and the advection equation on the rotating sphere, for applications related to weather and climate modeling.


Dynamical Core Model Intercomparison Project (DCMIP 2012)

DCMIP 2012 compared results from a variety of operational and still developing  climate and weather forecasting models for a suite of test problems designed to challenge the next generation of dynamical cores.  


Workshop on Transport Schemes on the Sphere (Tracer Transport 2011)

Hosted by Peter Lauritzen and Bill Skamarock of NCAR, the tracer transport workshop develeped test cases and methods to compare the advection schemes used by operational and research climate models.  An immediate outcome of the workshop was a standardized test case paper (link) that defines several problems and error measures for different climate modeling groups to investigate with their own numerical methods.   The participants of the workshop then completed the test cases and documented their results in a follow-up paper (link) in 2014.


Earth System Modeling Framework (ESMF, SIParCS 2009)

The Earth System Modeling Framework is a suite of high-performance software designed to help climate modelers couple model components in a flexible, efficient manner on today's parallel supercomputers.  In addition to programs designed to handle coupling across model components potentially using different grid types, data assimilation, and "swappable" component design, ESMF directly incorporates metadata into its design and output.  



© Peter Bosler 2013