Ozeanzirkulation und Klimadynamik


Southern Ocean Nest at 1/12°

Global Bathymetry (based on BlueMarble by the NASA Visible Earth Project). Boundaries of the AGRIF nest are shown as yellow frame.

ORION12 is a nested configuration designed to better resolve the mesoscale eddy variability of the Antarctic Circumpolar Current (ACC). The ACC is a current of global significance and its rich mesoscale eddy field shapes its dynamics and water mass properties. ORION12 features a 1/12° AGRIF nest embedded between 30°S and 68°S  into a global ocean model at 1/4° (ORCA025).

Animation of simulated surface speed (1 year in 5 day steps). Red (blue) areas indicate currents with high (low) velocities.

Person in charge: Lavinia Patara

  • NEMO ocean
  • LIM2 sea ice (elastic-viscous rheology)
  • Tripolar ORCA grid
  • CORE-II Bulk forcing
  • Grid Points: 4237 x 754 x 46
  • Typical Grid Point Distance: 4.5 km at 60°S


  • Climatological control run (90 years)
  • Hindcast reference experiment (last 60 years)


Simulations and numerical experiments with this configuration are mostly done using high performance computing facilities at HLRN.


Data is available only internally. For data requests from outside GEOMAR, please contact the Model and Data Management (see right column).



Jump to: 2016
Number of items: 1.


Patara, L. , Böning, C. W. and Biastoch, A. (2016) Variability and trends in Southern Ocean eddy activity in 1/12° ocean model simulations. Open Access Geophysical Research Letters, 43 . pp. 4517-4523. DOI 10.1002/2016GL069026.

This list was generated on Mon May 25 14:08:24 2020 CEST.



Global + Nest



Model and Data Management

For general questions about the model configurations and data access, please contact:

Dr. Markus Scheinert
West Shore Building
Room 427
Phone: 0431 600-4014
email: mscheinert(at)geomar.de

Dr. Klaus Getzlaff
West Shore - Alte Botanik
Room 51
Phone: 0431 600-4179
email: kgetzlaff(at)geomar.de