Overflow ice, also known as aufeis, is like a field of arctic daisies that comes back year after year. Aufeis that clogs northern valleys is born when frigid winter air meets cold water welling up to the ground’s surface. Aufeis dies when warm air finally melts it in July or August. Fields of aufeis (“off-ice”), […]
Controlling greenhouse gas emissions in the coming decades could substantially reduce the consequences of carbon releases from thawing permafrost during the next 300 years, according to a new paper published this week in the Proceedings of National Academy of Sciences. Conversely, climate policy that results in little or no effort to control greenhouse gases like carbon […]
I slept outside a few nights ago. Lying a platform of packed snow, my face looking upward from the sleeping bag, I squinted at the Big Dipper. Within a few minutes, what appeared to be a moving star slanted across the dipper. Then another. And another. About 10 of them streaked through the Alaska flag […]
On March 22, NASA completed the first IceBridge flight of its spring Arctic campaign with a survey of sea ice north of Greenland. This year marks the tenth Arctic spring campaign for IceBridge. The flights continue until April 27 extending the mission’s decade-long mapping of the fastest-changing areas of the Greenland Ice Sheet and measuring […]