The LIG simulation was performed by Joseph Schnaubelt for the NSF NCAR Paleo Group and used to validate proxy system models for the Last Interglacial reanalysis led by Prof. Matt Osman. The simulation follows PMIP protocols, with orbital configuration and greenhouse gas concentrations set to values at 127 ka B.P. It uses preindustrial vegetation and ice sheets and was initialized from a water-isotope-enabled preindustrial simulation using iCESM1.2. The simulation was run with iCESM1.2 at nominal 2-degree resolution in the atmosphere/land components and nominal 1-degree resolution in the ocean/sea ice components.

The corresponding PI control simulation is the one in the iCESM1.2 Deglacial Slice Simulations.

Further details are provided in the paper below:

  • Osman, M., Tierney, J.E., Lofverstrom, M., Schnaubelt, J., Tabor, C., Markle, B., & Aquino-Lopez, M. (in review). Last Interglacial global warming, ocean expansion and Greenland ice decay.

We kindly ask that you reference the appropriate paper(s) and acknowledge the PaleoclimateWG and computing resources from NSF and NCAR CISL when presenting results based on these simulations in either oral or written form. 

Project Details

  • Simulation Names: b.e12.B1850C5.f19_g16.iLIG127k.001
  • Model Versions: iCESM1.2
  • Resolution: 1.9x2.5_gx1v6 (nominal 2° atmosphere/land and 1° ocean/sea ice)
  • Years:  501 years
  • Ensemble Size: one
  • Time Frequencies Saved: Monthly
  • Machine: Cheyenne
  • Compsets: Bi1850C5

Data Acquisition

The LIG simulations are  available on the NWSC computing storage at:

/glade/campaign/cesm/community/palwg/LastInterglacial/iCESM1.2

Diagnostics

Diagnostics for the simulation may be added later.