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BEGIN:VEVENT
DTSTAMP:20260428T005910Z
DTSTART;VALUE=DATE-TIME:20230313T150000
DTEND;VALUE=DATE-TIME:20230313T160000
SUMMARY:Mathew Owens (Reading): When less is more - reduced physics simul
 ations of the solar wind
TZID:Europe/London
UID:20230313-8a1785d885bb10c60185cf10a00416ca@warwick.ac.uk
CREATED:20230308T120731Z
DESCRIPTION:Abstract: As scientists\, we strive to construct models and s
 imulations that describe natural systems in greater and greater fidelity
 . But this comes with a cost\; increased code complexity and computation
 al demand. The solar wind is typically simulated using three-dimensional
  magnethydrodynamics (3DMHD)\, providing a useful research tool to under
 stand the dynamic heliosphere and a means to forecast space weather a fe
 w days ahead. But beyond the upper corona\, the magnetic field is largel
 y passive and the flow is highly radial. Thus one-dimensional\, hydrodyn
 amic solutions to the same solar wind initial conditions provide a good 
 “surrogate” for 3DMHD using a much simpler code base and at a fraction c
 omputational cost. For space-weather forecasting\, this is a valuable co
 mplimentary approach to traditional 3DMHD. It enables rapid forecasts an
 d large ensembles of model solutions to comprehensively investigate para
 meter space\, and hence quantify forecast uncertainty. It also permits t
 he use of powerful data assimilation techniques to exploit the available
  solar wind observations and provide much needed additional constraints 
 on the simulations\, limiting how far they can diverge from reality.
LOCATION:B2.04/2.05
CATEGORIES:CFSA Seminar
LAST-MODIFIED:20230308T120731Z
ORGANIZER;CN=Anne-Marie Broomhall:
END:VEVENT
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