NASA: Dr. Tom Wagner on the Sea Ice Minimum

September 26, 2011

I didn’t find this until I had already posted my annual Sea Ice video. (below)

Tom Wagner is simple, engaging, credible, and clear – I’ve used clips of his explanations before to help elucidate this material. Would like to see more like this from NASA.

For graphs and data from NASA, go here

On Sept. 20th, NASA’s Cryosphere Program Manager, Tom Wagner, shared his perspectives on the ice with television audiences across the country.

On the top of the world, a pulsing, shifting body of ice has profound effects on the weather and climate of the rest of the planet. Every winter as temperatures dip, sea ice freezes out of cold Arctic Ocean waters, and every summer the extent of that ice shrinks as warm ocean temperatures eat it away. Ice cover throughout the year can affect polar ecosystems, world-wide ocean currents, and even the heat budget of the Earth.

During the last 30 years we’ve been monitoring the ice with satellites, there has been a consistent downward trend, with less and less ice making it through the summer. The thickness of that ice has also diminished. In 2011 Arctic sea ice extent was its second smallest on record, opening up the fabled Northwest Passages and setting the stage for more years like this in the future. In this video, NASA’s Cryosphere Program Manager, Tom Wagner, shares his perspectives on the 2011 sea ice minimum.

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5 Responses to “NASA: Dr. Tom Wagner on the Sea Ice Minimum”


  1. Humph. This guy’s video is OK, but it’s not as good as yours are, Peter. Keep making ‘em!

    • greenman3610 Says:

      there’s different strokes for different folks.
      some people don’t like mine – and some people take things better from a NASA than from me.


  2. Wagner does a good job- he speaks in a clear style that makes it easy for those without a hard science background to understand.

  3. otter17 Says:

    Now if only this type of thing were to be broadcast on the major news networks…

  4. verbonnet Says:

    Very concise and clear. Really amazing satellite image!


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