For several days this month, Greenland's surface ice cover melted over a larger area than at any time in more than 30 years of satellite observations.
PostedJun 1, 2012
Physical Climate, Observations, Carbon Cycle, Arctic
The concentration of carbon dioxide in the atmosphere of Barrow, Alaska, reached 400 parts per million (ppm) this spring, according to NOAA measurements, the first time a monthly average measurement for the greenhouse gas attained the 400 ppm mark in a remote location.
PostedMay 2, 2012
Ecosystems & Biodiversity, Arctic
Data collected from long distance swims by polar bears suggest that they do not stop to rest during their journey.
PostedMar 27, 2012
Carbon Cycle, Arctic
A new study by USGS scientists and university researchers reveals that a substantial amount of organic carbon on Alaskan glaciers comes from atmospheric deposition of fossil fuel emissions.
PostedMar 19, 2012
Oceans, Observations, Arctic
A new NASA study shows that the average thickness of sea ice in the Arctic is on the decline.
PostedFeb 3, 2012
Observations, Carbon Cycle, Arctic, Cities & Infrastructure, Indicators
Last week, the Interior Department's US Geological Survey (USGS) released details about a landmark airborne survey of permafrost in the Yukon Flats of Alaska that yielded some of the most detailed, data-rich maps of permafrost ever generated.