The amount of sea ice that survives the Arctic summer has declined by 12 percent per decade since the start of the satellite record in 1979.
Climate Impacts
Global average sea level has risen at least 8-9 inches since 1880, and the rate is accelerating thanks to glacier and ice sheet melt.
Atmospheric rivers soak California in early January 2026
January 15, 2026
The U.S. tornado season to date has been very active. Our guest blogger explains how the lingering influence of La Niña might have played a role.
Wildfire smoke can cause air pollution in locations thousands of miles downwind. Health experts need to know what's in the smoke people are breathing—especially smoke from fires that burn into urban areas and ignite synthetic materials.
It’s March Madness, ENSO style! Our blogger discusses why the North American precipitation pattern this past winter looked more like the response to a moderate-strength La Niña than to a weak event.
Weak La Niña conditions continued in January, but a transition to ENSO-neutral in the near future is likely.