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SUMMARY:Simone Marras
DTSTART:20251022T070000Z
DTEND:20251022T080000Z
DTSTAMP:20260422T122056Z
UID:MathMAC/41
DESCRIPTION:Title: <a href="https://researchseminars.org/talk/MathMAC/41/"
 >Noise\, ripples\, and other oscillations in numerical weather > predictio
 n. A brief survey of how to treat them.</a>\nby Simone Marras as part of M
 odelling of materials - theory\, model reduction and efficient numerical m
 ethods (UNCE MathMAC)\n\n\nAbstract\nThe advent of inexpensive massively p
 arallel computers in the past fifteen years has revolutionized the way num
 erical weather prediction\, climate and ocean modeling are handled today. 
 In this talk\, I will describe how this revolution happened\, the reasons 
 that drove it\, and what challenges are still to be fully addressed and re
 solved as exascale computing approaches.\n\nI will concentrate on the use 
 of high-order continuous and discontinuous spectral elements (SEM) as they
  are proving their mettle for solving the Navier-Stokes equations to model
  atmospheric motion. Because of the high susceptibility of SEM to Gibbs os
 cillations in the solution to non-linear problems\, special attention will
  be given to understanding how their stabilization is still an active topi
 c of research and how we are contributing towards its solution.\n
LOCATION:https://researchseminars.org/talk/MathMAC/41/
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