Sea Ice

The globally averaged temperature over land and ocean surfaces for 2018 was 1.42°F (0.79°C) above the 20th century average.

We’re announcing the release of the State of the Climate in 2017 report, an assessment of the world’s climate system.

Arctic sea ice reaches its maximum extent this month. The Sea Ice Index houses a repository of data used to track sea ice trends and changes.

The globally averaged temperature over land and ocean surfaces for January 2017 was the third highest for the month.

NCEI makes available a new version of the Sea Ice Concentration Climate Data Record.

Glaciers are much more than meets the eye. They provide a window into the past and perhaps, a glimpse into our future.

The globally averaged temperature over land and ocean surfaces for 2016 was the highest since record keeping began in 1880.