NASA aerial campaigns monitor the gases leaking from Alaskan permafrost for signs of change.
Published Apr 12, 2016
Nearly all fresh water at Earth’s highest northern latitudes is frozen. But just a short distance to the south, the landscape comes alive each year after the spring thaw.
Published Jan 2, 2016
Temperatures are warming faster in the Arctic than anywhere else in the world. Here’s why.
Published May 26, 2013
Airborne measurements detect the greenhouse gas rising out of cracks in the ice cap.
Published May 9, 2012
Rapid growth from 2008–2017 built upon the rise in the atmospheric concentration of the gas that has been happening for more than a century.
Published Jul 15, 2020
In the first weeks of June 2010, winter snow disappears from the lake-dotted tundra of Alaska’s North Slope like a dust cover whisked off a stained glass work of art.
Published Jun 17, 2010
Most indications of meltwater ponds and lakes on the ice sheet are leftovers from past seasons that have since refrozen.
Published Apr 29, 2019
As Arctic sea ice extent shrinks each year, ships are cruising farther north.
Published Apr 12, 2018Image of the Day Water Human Presence Snow and Ice Remote Sensing
This pair of images shows the similarities between the surface of Mars and permafrost near Spitsbergen, Svalbard.
Published May 28, 2008
Meltwater accumulates in the rocky terrain near the northeastern coast.
Published May 31, 2012
As global and regional warming continues, winter emissions of carbon dioxide from Arctic lands are offsetting what plants absorb in the summer.
Published Nov 19, 2019
A new report summarizes Arctic environmental conditions in 2013, including sea surface temperatures.
Published Dec 13, 2013
Taken from a low-flying airplane on March 26, 2011, these detailed photos of Arctic sea ice show the richly varied texture in the ice floe.
Published Apr 1, 2011
A new map shows where the bottom of the Greenland Ice Sheet is likely thawed.
Published Aug 4, 2016
For many years, scientists have expected that climate change will be more rapid and dramatic at the poles than at lower latitudes, an expectation that has been demonstrated both with climate models and recent observations of snow and ice, surface temperatures, vegetation, and permafrost.
Published Feb 1, 2007
In the Arctic, sea ice extent fluctuates with the seasons. It reaches its peak extent in March, near the end of Northern Hemisphere winter, and its minimum extent in September, at the end of the summer thaw. In September 2007, Arctic sea ice extent was the smallest area on record since satellites began collecting measurements about 30 years ago.
Published Mar 25, 2008
