Satellite observations show that as the Arctic tundra has grown warmer in the past three decades, it has also grown “greener.”
In the Arctic, an ocean is surrounded by continents, while Antarctica is continent surrounded by oceans. These differences in the arrangement of land and water contribute to differences in each polar region’s climate, oceanic and atmospheric circulation patterns, and seasonal and long-term sea ice patterns.
In 2007, Arctic sea ice retreated so dramatically that it broke all previous records for sea ice minimum for July through October. Is this year’s summer ice melt season on track to surpass 2007?
On September 12, the extent of sea ice in the Arctic reached the third lowest level ever recorded since satellite records began in 1979. Only 2007 and 2008 have had smaller ice extents than 2009.
A record-warm autumn boosted Arctic 2020-21 surface temperatures to the rank of seventh-warmest year on record since 1900.
Climate change is transforming the Arctic into a ‘dramatically different state.’ Browse this collection of image highlights from NOAA's 2021 Arctic Report Card.
A new NOAA Fisheries study has found some of the first quantitative signs that three species of seals (ribbon, spotted, and harbor) are experiencing impacts of warming in the Bering Sea and Aleutian Islands.
New research weighs in on a popular debate about whether reduced Arctic sea ice is causing extreme mid-latitude winters. Their result? Blame the atmosphere, not the ice.