Effects on hydrosphere

By On December 23, 2011 Under Learning
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Melting polar ice caps

Satellite observations show a gradual reduction of surface polar caps. Shown in the figure (when stopped) The largest was ice in the winter of 1982 to winter 2007.

The average age of Arctic ice has decreased between 1988 – 2005 from 6-3 years. Global warming in this region is about. 2.5 ° C, (instead of 0.7 ° C on average on the planet) and average ice thickness has decreased by 40% during 1993-1997 than during 1958-1976. In 2007, satellite observations have revealed the ice melt accelerating Arctic, with a decrease in its area by 20% over one year. If the trend continues, some observer believes that summer sea ice will melt completely as early as 2013 instead of 2030 as expected earlier. It is hoped that specialized satellite CryoSat-2, which will be launched into orbit in 2009 to provide accurate information on this phenomenon.

And Antarctica melting phenomena. Warming was due to prevailing winds change direction, increasing concentrations of greenhouse gases and ozone deterioration .. Detachment from self Antarctic ice increased in the last decade (until 2008) by 75%.

Withdrawal and the disappearance of glaciers, melting snow

And terrestrial glaciers undergoes melting. Disparate observations indicate withdrawal of glaciers since 1800. Regular measurements were made since 1950 by World Service Tracking Glacier (Glacier Monitoring Service World English WGMS) and the National Center for Snow and Ice Data (English National Snow and Ice Data Center – NSIDC).

Alpine glaciers withdrawal, especially in western North America, Greenland, Asia, the Alps, Indonesia, Africa (Kilimandjaro) and in South America was used by the IPCC in its 2001 report as evidence of global warming.

Particular case of snow on Kilimandjaro, which was initially controversial, was reviewed following the IPCC reports. The next gallery is presented compared two photos, the first made on 17 February 1993, and the second on 21 February 2000. Kilimandjaro lost in the twentieth century 82% of its glaciers, which are expected to disappear completely around 2020.

 

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