As would be expected, a slightly greater proportion of thicker sea ice formed during the Little Ice Age would likely remain during the first warming event compared to recent decades. (landscapesandcycles.net)
Knowing that sea ice formed at a particular location at a particular time gives the air and ocean temperature for that spot, allowing researchers to test simulations of the atmosphere and the ocean. (scientificamerican.com)
Satellite data show that, between 1979 and 2013, the summer ice - free season expanded by an average of 5 to 10 weeks in 12 Arctic regions, with sea ice forming later in the fall and melting earlier in the spring. (sciencemag.org)