Using data from the ICESat and ICESat-2 laser altimeters, scientists precisely measured how much ice has been lost from ice sheets in Antarctica and Greenland between 2003 and 2019. The Antarctic Peninsula, seen here, was one of the fastest changing regions of the continent. Credits: NASA / K. Ramsayer The results provide insights into how […]
There are two primary causes of global mean sea level rise — added water from melting ice sheets and glaciers, and the expansion of sea water as it warms. The melting of Antarctica’s ice sheet is currently responsible for 20-25% of global sea level rise. But how much of a role will it play hundreds of […]
SEATTLE — The 150-member crew of the U.S. Coast Guard Cutter Polar Star returned earlier this month to their homeport of Seattle following a 105-day deployment to Antarctica in support of Operation Deep Freeze. Operation Deep Freeze is an annual joint military service mission in support of the National Science Foundation, the lead agency […]
[dropcap]A[/dropcap]cting on the advice of medical experts, National Science Foundation (NSF) officials have directed the NSF-chartered research vessel Nathaniel B. Palmer to put ashore a person in need of a level of care not available aboard the ship. The Palmer, which is at sea in Antarctic waters, will divert to the British Antarctic Survey’s Rothera Station. After arriving […]