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BEGIN:VEVENT
DTSTAMP:20210916T132453Z
LOCATION:Jean Calvin
DTSTART;TZID=Europe/Stockholm:20210708T170000
DTEND;TZID=Europe/Stockholm:20210708T173000
UID:submissions.pasc-conference.org_PASC21_sess165_msa200@linklings.com
SUMMARY:High Order Semi-Lagrangian Discontinuous Galerkin methods for NWP 
 problems
DESCRIPTION:Minisymposium\n\nHigh Order Semi-Lagrangian Discontinuous Gale
 rkin methods for NWP problems\n\nTumolo\n\nHigh order Discontinuous Galerk
 in (DG) methods pose stringent stability restrictions on explicit time dis
 cretization methods. A novel strategy to increase the computational effici
 ency of DG methods for advection-dominated flow problems will be presented
 , based on a semi-Lagrangian time discretization (SL-DG). It combines data
 -locality and high order accuracy of discontinuous spectral element method
 s with the efficient time stepping of semi-Lagrangian techniques. In the f
 ramework of the European project ESCAPE-2, we will outline the ongoing dev
 elopment of such numerical formulation within a parallel library called Pa
 nther (P-adaptive Numerical Tool for High order Efficient discRetizations)
 . This allows a parallel implementation of adaptive DG techniques by takin
 g full advantage of degree adaptivity in each coordinate direction of gene
 ric hexahedral elements. The main technical aspects of the parallel SL-DG 
 implementation will be also reviewed. Preliminary parallel results achieve
 d with SL-DG will be shown and discussed, and their potential for applicat
 ions to Numerical Weather Prediction and Earth System Modelling problems o
 n Exascale Supercomputers will be assessed.\n\nDomain: CS and Math, Climat
 e and Weather
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