All images and data below are calculated from the PIOMAS gridded sea ice thickness data provided by the Polar Science Center (Zhang et al.) .
This page is updated monthly, when PIOMAS updates their data files, usually around the 4th day of the month, although sometimes their updates are delayed.
Update 3 Apr 2026: PIOMAS data won't be updated anymore until further notice, since the NCEP temperature dataset used by the model has become unavailable. Hopefully they'll find an alternative to revive the model.
Regional volume graphs
Definition of the regions: