This video shows some of the most dramatic fluctuations to our cryosphere in recent years, using visuals created with a variety of satellite-based data.
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Video could be stopped along the way to have discussion about the graphs embedded in the video. Use NASA NEO website to get current data.
Educator might want to be aware of positive feedback loop mechanisms to facilitate further discussion.
This video and its accompanying text ([link http://svs.gsfc.nasa.gov/vis/a000000/a003600/a003619/]) demonstrates how, using satellite observations, scientists can monitor changes in the global and regional climate by observing how regions of the Earth's cryosphere shrink and expand.
Comments from expert scientist: The source of the video are NASA satellites so this is a direct view of what has happened to cryosphere over the years, till 2009. It is a kind of direct assessment of the cryospheric changes taking place. The video however, will prove very helpful in educating the people about the changing croysphere and its impact on global climate.
Draft of script is provided for students to follow along. Though some of data references are dated, overall trends in different geographic areas continue in the same direction.
Graphics are good.
YouTube version of this video is on a blog site that contains some inappropriate comments