Global sea ice extent

Global sea ice extent. Data available from NSIDC (Fetterer et al., 2025).

Global sea ice extent plotted by year.
Anomalies in Global sea ice extent.
Anomalies in Global sea ice extent plotted by year.
Anomalies in Global sea ice extent, normalised by 1981-2010 climatology, plotted by year.
Climatology of Global sea ice extent.

References

2025

  1. Sea Ice Index, Version 4
    Florence Fetterer, Ken Knowles, W. N. Meier, and 3 more authors
    2025