March 18 2008 - Using the latest satellite observations, NASA researchers and others report that the Arctic is still on “thin ice” when it comes to the condition of sea ice cover in the region. A colder-than-average winter in some regions of the Arctic this year has yielded an increase in the area of new sea ice, while the older sea ice that lasts for several years has continued to decline.This ice concentration map during indicates maximum ice extent in the Northern Hemisphere and the contour of the ice edge in 2006.This ice concentration map dated March 9, 2008, indicates maximum ice extent in the Northern Hemisphere. The contour of the ice edge in 2006 is shown in red, while that for the 28-year average is shown in gold. Click image to enlarge. Credit: NASA On March 18 the scientists said they believe that the increased area of sea ice this winter is due to recent weather conditions, while the decline in perennial ice reflects the longer-term warming climate trend and is a result of increased melting during summer and greater movement of the older ice out of the Arctic. More >>>
