The NASA Climate Time Machine

September 8, 2008 at 8:39 am | Posted in Wheater | Leave a comment
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Thanks to a friend I received this website, with a name as cool as its desing: the Clime Time Machine. In this site, created by the Jet Propulsion Laboratory and the California Institute of Technology, you can track the changes in our planet through the decades, in four different aspects:

Clime Time Machine

Ice melting:this visualization shows the annual Arctic sea ice minimum from 1979 to 2007. At the end of each summer, the sea ice cover reaches its minimum extent, leaving what is called the perennial ice cover. The area of the perennial ice has been steadily decreasing since the satellite record began in 1979. (Credit: NASA/Goddard Scientific Visualization Studio).

Sea level
: recent satellite observations have dete

cted a thinning of parts of the Greenland ice sheet at lower elevations. A partial melting of this ice sheet would cause a 1-meter (3-foot) rise. If melted completely, the Greenland ice sheet contains enough water to raise sea level by 5-7 meters (16-23 feet). This visualization shows the effect on coastal regions for each meter of sea level rise, up to 6 meters (19.7 feet). Land that would be covered in water is shaded red.

Carbone dioxide emissions: this visualization shows the amount of annual carbon dioxide emissions produced by the top 12 nations or regions from 1980-2004. Units are given in thousand metric tons of carbon dioxide emitted from fossil fuel consumption.

Average Glogal Temperature:This color-coded map shows a progression of changing global surface temperatures from 1885 to 2007. Dark blue indicates areas cooler than average. Dark red indicates areas warmer than average.

You have to drag the handle over the years to see the which is quite alarming. Of this four point, specially two are affecting polar regions: the ice melting and the rising of temperature. But, of course, everything is linked. Global warming seems to be finally on the agenda of politicians – or at least they are pretending to – but there is still much more to do. How you or your country is reacting to global warming and its side effects?


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