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SUMMARY:Variable resolution experiments using CAM's spectral finite elemen
 t dynamical core - Taylor\, M (Sandia National Laboratories)
DTSTART:20120822T153000Z
DTEND:20120822T160000Z
UID:TALK39330@talks.cam.ac.uk
CONTACT:Mustapha Amrani
DESCRIPTION:Much recent work in the Community Earth System Model (CESM) an
 d its atmosphere component (CAM) has been devoted to developing higher res
 olution configurations\, motivating new dynamical cores which can use unst
 ructured quasi-isotropic grids. These dynamical cores also allow for varia
 ble resolution configurations in CAM\, but making use of variable resoluti
 on (adaptive or statically refined grids) is difficult due to the strong r
 esolution sensitivity of CAM's many subgrid physical parameterizations.\n\
 nHere we will describe our work with statically refined grids in CAM\, usi
 ng CAM's spectral finite element dynamical core. This work is supporting t
 he development of a model/observation "test bed". Test-beds combine models
 \, observations and uncertainty quantification methodologies in order to e
 valuate existing models\, quickly develop and test new parameterizations a
 nd constrain parameters with observations. It is hoped that variable resol
 ution can provide a 10-100 times more efficient way to calibrate and evalu
 ate high-resolution configurations of CAM. Our initial focus is on central
  U.S. precipitation\, using a global 14km grid and a variable resolution g
 rid with 14km resolution over the central U.S.\, transitioning to 110km ov
 er most of the globe. For both configurations\, we will present computatio
 nal performance and compare precipitation related diagnostics.\n
LOCATION:Seminar Room 1\, Newton Institute
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