James McCarthy, Harvard University, Department of Earth and Planetary Science
The Arctic is changing in dramatic and disturbing ways with giant lakes replacing what used to be ice fields. This video lecture presents data showing ice over the Arctic Ocean retreating over recent decades; military submarine data from under the Arctic ice showing the thickness of the ice decreasing everywhere over the last 50 years; and pictures 50 miles from the North Pole revealing open ocean where there was once ice. The percentage of glaciers that are retreating is explored, using the Hubbard Glacier in Alaska as an example. Models of climate warming and a Navy projection of where the ice will retreat to are also presented. The video is 16 minutes long.
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Subject: Geoscience:Hydrology, Atmospheric Science:Climatology Grade Level: Middle (6-8), College Lower (13-14), High School (9-12), General Public Theme: Teach the Earth:Incorporating Societal Issues:Climate Change, Teach the Earth:Course Topics:Hydrology/Hydrogeology, Atmospheric Science, Teach the Earth:Teaching Topics:Water
