When forecasters remove the observed trend from sea surface temperatures, the predicted heat wave area drops from 50 percent of the global ocean to 25 percent.
Will El Niño push the planet to a new record-high temperature in 2023? Our guest blogger explains what past years tell us.
Poster-sized collection of global temperature maps since 1850 makes it easy to spot the influence of global warming.
As key habitat goes underwater, NOAA is relocating some endangered Hawaiian monk seals to higher ground.
For the last 40 years, the tropical Pacific has been trending toward a La Nina-like pattern. Will this trend continue into the future? What are the implications? Three experts dig into these questions and more.
Snow-cover duration continued a longer-term pattern in 2021–22, of significantly faster springtime snowmelt.
Ship traffic is increasing as sea ice dwindles—not just in near-shore, territorial waters of Arctic coastal countries, but increasingly, in the high seas of the Central Arctic Ocean.
The 2022 melt season on the Greenland Ice Sheet started slowly, but ended late, with multiple melt spikes in September.
Arctic temperatures over 2021-22 were the sixth-warmest on record, based on records dating back to 1900.
Highlights from the 2022 update to NOAA's Arctic Report Card in maps and charts.