Joint Oslo seminar in atmospheric, ocean and climate science, February 12

Title: Reconciling and Improving Formulations for Thermodynamics and Conservation Principles in Earth System Models (ESMs)

Speaker: Peter Lauritzen, National Center for Atmospheric Research (NCAR)

Image: Peter Lauritzen, NCAR

Speaker: Peter Lauritzen, NCAR

Abstract:

Earth System Models (ESMs) have numerous total energy budget errors. This talk establishes the governing total energy equations for large-scale ESMs and assesses the energy budget errors in real-world simulations in a widely used climate model. To move towards a closed energy budget in ESMs, further research on total energy conserving discretizations (in the dynamical core), unified thermodynamics (through thermodynamic potentials/conserved variables) and missing processes is paramount. The energy budget errors will not improve with higher spatial resolution and may even get worse.

What is the Joint Oslo Seminar (JOS):

  • Atmospheric and climate sciences have a stronghold in Oslo among the four institutions University of Oslo, the Meteorological Institute, CICERO and NILU.
  • This joint seminar invites renowned international experts to contribute to an informal series of lectures, meant to create interaction with the Oslo atmospheric and climate science community on recent highlights and analysis in the field.
  • Normally seminars will be held on Thursdays (12:15 pm -1pm).
Published Jan. 5, 2026 11:55 AM - Last modified Jan. 5, 2026 12:59 PM