Thursday, August 15, 2013

The Glacial Waterfalls

On Earth, 99% of glacial ice is contained within vast ice sheets in the polar regions. Glacial ice is the largest reservoir of freshwater on Earth, supporting one-third of the world’s population. Many glaciers store water during one season and release it later as meltwater, a water source that is especially important for plants, animals and human uses when other sources may be scant. Because glacial mass is affected by long-term climate changes, e.g., precipitation, mean temperature, and cloud cover, glacial mass changes are considered among the most sensitive indicators of climate change and are a major source of variations in sea level.


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