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SUMMARY:Advances in high-resolution global climate modelling: achievements
  and perspectives  - Marie Estelle Demory\, University of Reading
DTSTART:20141125T140000Z
DTEND:20141125T150000Z
UID:TALK55313@talks.cam.ac.uk
CONTACT:Dr. Pranab Deb
DESCRIPTION:As computer resources and power increase\, more climate modell
 ing centres around the world are testing the value of increasing resolutio
 n in climate models in the hope that their simulations will become more re
 alistic and provide more trustworthy climate predictions and projections. 
 However\, these models require very substantial resources to be operated a
 nd analysed\, while\, for many aspects of the climate system\, we still do
  not fully understand the effect of resolution on climate simulations. As 
 our community is already planning a move towards high-resolution Earth Sys
 tem modelling\, it is imperative that we focus on the fundamental uncertai
 nties in the physical aspects of climate models\, particularly the atmosph
 ere-land surface-ocean-sea ice components.\nIn the JWCRP High-Resolution G
 lobal Climate Modelling group\, a long-term collaboration between the Met 
 Office and the National Centre for Atmospheric Science in Reading\, we use
  high-resolution global models to better understand the mean and variabili
 ty of climate features\, their teleconnections and emerging processes. The
  first part of this seminar will introduce where we are in terms of high-r
 esolution global climate modelling in the UK\, as well as the opportunitie
 s such models offer. By highlighting several examples from atmosphere-only
  and coupled atmosphere-ocean global simulations\, focus will be put on th
 e features that do depend on resolution such as tropical cyclone variabili
 ty\, ocean-to-land atmospheric moisture transport\, organisation of convec
 tive events\, while counter examples will also be shown\, such as blocking
  events and atmospheric rivers for which the role of resolution is not cle
 ar yet. These results highlight that the main challenge that remains in hi
 gh-resolution global climate modelling (more important than supercomputer 
 resources and data storage) is the need for a community approach for data 
 analysis to assess confidence in high-resolution simulations. This will be
  discussed in the last part of the seminar.\n
LOCATION:British Antarctic Survey\, Room 187
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