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SUMMARY:Challenges in Computing Climate Sensitivity and Climate Solutions:
  Examples from Glaciology and CO2 Storage - Jerome Neufeld\, University of
  Camridge
DTSTART:20240301T130000Z
DTEND:20240301T140000Z
UID:TALK208819@talks.cam.ac.uk
CONTACT:114742
DESCRIPTION:\n\nUnderstanding a predicting the observed changes in key cli
 matic systems\, or predicting and de-risking climate solutions pose challe
 nges\, particularly in assessing poorly constrained properties of the syst
 em whose behaviour at small scales often determines the response.  In this
  talk I’ll give two physical examples\, and an approach of reduced model
 ling which focuses on the key uncertainties.\n\nThe two large global ice s
 heets are loosing significant mass\, but Greenland predominantly looses ma
 ss by surface melting\, while Antarctica looses mass by melting of ice she
 lves and in the zone where ice becomes grounded.  In both cases\, the resp
 onse is dictated by the temporal and spatial evolution of a complex subgla
 cial hydrological system\, whose properties are difficult to observe remot
 ely.  We’ll use reduced models of the subglacial system to understand th
 e key role of subglacial systems and pose the question of how best to cons
 train this subglacial hydrological system.\n\nGeological storage of CO2 is
  one method of reducing anthropogenic CO2 emissions\, and involves the inj
 ection of large volumes of CO2 into the subsurface.  In order to remain tr
 apped in the subsurface\,  buoyant CO2 is typically injected beneath a rel
 atively impermeable cap rock.  Observations of CO2 stored in various stora
 ge sites demonstrates that the subsequent flow of CO2 is dominated by vari
 ability in caprice topography and variations in permeability which are not
  readily observed remotely.  We’ll again use reduced models of CO2 sprea
 ding to understand the sensitivity to geological heterogeneity\, and pose 
 the question of how best to estimate the uncertainties associated with the
  storage of large volumes of CO2 in the subsurface. \n\n\nBio: \n\nJerome 
 Neufeld is Professor of Earth and Planetary Fluid Dynamics jointly appoint
 ed at the Institute for Energy and Environmental Flows\, the Department of
  Earth Sciences and the Department of Applied Mathematics and Theoretical 
 Physics at the University of Cambridge.  The research in his group focuses
  on using mathematical models\, laboratory experiments and field observati
 ons to understand the fluid dynamical behaviour of the Earth and other pla
 netary bodies.  Current research interests include the consequences of sub
 glacial hydrology on supraglacial lake drainage and the tidal modulation o
 f ice streams\, the solidification of magma oceans and the early generatio
 n of magnetic fields on planetary bodies\, the erosive dynamics of idealis
 ed river systems\, the emplacement and solidification of magmatic flows\, 
 viscous tectonic mountain building\, and the fluid dynamics of geological 
 carbon storage. 
LOCATION:FW11\, William Gates Building. Zoom link: https://cl-cam-ac-uk.zo
 om.us/j/4361570789?pwd=Nkl2T3ZLaTZwRm05bzRTOUUxY3Q4QT09&amp\;from=addon 
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