How the Climate System Works

Temperature extremes have been pretty unusual across the United States so far in 2014. Looking back over this time period quickly reveals at least part of what was going on: the polar jet stream got into a serious rut.

Tuesday, November 1, 2011

  • Phytoplankton productivity has increased 20 percent over the past decade as sea ice extent declines and more open water habitat is available.

  • During spring 2011, the Northern Great Plains experienced record flooding. This video explains how a La Niña climate pattern helped set the stage for this extreme event.