Climate Impacts

From changes in cooling degree days to the local effects of El Niño, the Local Climate Analysis Tool helps meteorologists and others understand the connection between global climate and local impacts.

Saturday, October 1, 2011

  • In the mid-1980s, the winter sea ice pack in the Arctic was dominated by multi-year ice—ice that had survived at least one summer melt. Today, less than half of the sea ice at winter maximum has survived at least one summer.

  • The low ice extent recorded this September continued the downward trend seen over the last 30 years. Meanwhile, scientists are finding that the ice cover has grown thinner, making it more vulnerable to melting during the summer.