CGD Seminar Series - Peter Lauritzen, The challenge of energy budget closure in Earth system models

Title: The challenge of energy budget closure in Earth system models

Speaker: Peter Lauritzen, NCAR

Date: Tuesday 16 March 2021

Time: 11 am - 12 pm

For zoom information please contact Tracy Baker, tbaker@ucar.edu

Abstract:  A closed total energy (TE) budget is of utmost importance in coupled climate system modeling. In the case of the atmosphere it involves physical parameterizations, the dynamical core solver, the coupling between the two (referred to as physics-dynamics coupling) and fluxes from the surface components. The budget is rather complicated partly due to the fact that all parts of an Earth System Model are involved and, even on a continuous level, it is not straightforward how to formulate energetically and thermodynamically consistent equations for a moist atmosphere containing falling hydrometeors.A detailed analysis of the spurious sources/sinks of TE in the National Center for Atmospheric Research's Community Atmosphere Model (CAM) is given. This includes spurious sources/sinks associated with the parameterization suite, the dynamical core, TE definition discrepancies, and physics‐dynamics coupling. It will also be discussed how to move towards a more comprehensive and thermodynamically consistent formulation of TE in CAM.

For more information contact Tracy Baker, tbaker@ucar.edu, 303-497-1366

Type of event:

Will this event be webcast to the public by NCAR|UCAR?: 
No
Announcement Timing: 
Monday, March 15, 2021 to Tuesday, March 16, 2021
Calendar Timing: 
Tuesday, March 16, 2021 - 11:00am to 12:00pm MDT

Posted by Tracy Baker at ext. 1366, tbaker@ucar.edu

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