The Los Alamos sea ice model (CICE)

The Los Alamos sea ice model (CICE) is the result of an effort to develop a computationally efficient sea ice component for use in fully coupled, atmosphere-ice-ocean-land global climate models, and it was originally developed to be compatible with the Parallel Ocean Program (POP). CICE was used in several of the climate models contributing to the Fourth and Fifth Assessment Reports of the Intergovernmental Panel on Climate Change. Although it is designed for global climate modeling, CICE can also be used in standalone mode for sea ice simulations. The current version of the model has been enhanced greatly through collaborations with members of the Community Climate System Model Polar Climate Working Group, based at the National Center for Atmospheric Research, and researchers at the U. K. Met Office Hadley Centre, the Centre for Polar Observation and Modelling, and the Nansen Environmental and Remote Sensing Center.

Source code, documentation and data sets

The CICE code is freely available under a Copyright agreement, including full documentation and basic forcing data for testing. CICE version 5.0 was publicly released in September, 2013.

Mailing List

If you would like announcements about releases and other CICE information, you can subscribe to the cice-users list. To subscribe, send an e-mail to listmanager at maillist.lanl.gov with the message "subscribe cice-users". We will need to confirm your request before you are officially added.

Users and Collaborators

We have begun to compile a list of references to document the wide usage that CICE enjoys, and we appreciate your assistance in this effort: CICE Users

To distribute your CICE modifications to the CICE user community: CICE Code Modifications

A list of ongoing code development collaborations: CICE Collaborative Projects

CICE: the name

The Los Alamos developers pronounce the name as "sea ice," but there has been a small grass-roots movement underway to alter the model name's pronunciation to what an Italian might say, "chee-chay." Others choose to say "sice" (English, rhymes with "ice"), "seese" (French, like "cease") or "shii-aisu" (Japanese). However you pronounce it, it is CICE, the Los Alamos Sea Ice Model.

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