something up you ally on global warming Water l
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Posted On: 11/18/2016 7:30:05 PM
something up you ally on global warming
Water levels
Between 12,000 and 11,000 years ago, towards the end of the last ice age, sea levels rose by between 100 to 140 metres when the Fennoscandia ice sheet melted rapidly. There was a similar fast melting of the Laurentide ice sheet between 8,000 and 5,000 years ago. These large conversions of ice to water changed the face of the Earth, with events like the continents of Asia and North America being separated by the appearance of the Bering Straits. Overall, the global sea level rose an average of 1 metre a century until 2,500 years ago.
Today, there is enough water tied up in the south polar cap [6], and in glaciers, to raise water levels by about 70 metres if this is all melted. Global warming would also result in expansion of water volume by heat.
Estimates for rising sea water suggest that:
•during 1901 – 2000 sea level rose: 9 cm (4 inches);
•a predicted sea level rise for 2001 – 2100: 9 to 88 cm (4 to 40 inches).
There is a considerable range of future estimates.
•if the Greenland ice sheet melted, add 6.75 metres (25 ft);
•if the West Antarctic ice sheet melted, add 4.3 metres (16 feet).
The melting of these ice sheets would be enough to flood Florida and Bangladesh.
However, because average temperatures in the Arctic and Antarctic are well below 0°C, the melting point of ice, such a scenario is not likely in any foreseeable near future.
read full article here
http://www.abelard.org/briefings/global_warming.php
Water levels
Between 12,000 and 11,000 years ago, towards the end of the last ice age, sea levels rose by between 100 to 140 metres when the Fennoscandia ice sheet melted rapidly. There was a similar fast melting of the Laurentide ice sheet between 8,000 and 5,000 years ago. These large conversions of ice to water changed the face of the Earth, with events like the continents of Asia and North America being separated by the appearance of the Bering Straits. Overall, the global sea level rose an average of 1 metre a century until 2,500 years ago.
Today, there is enough water tied up in the south polar cap [6], and in glaciers, to raise water levels by about 70 metres if this is all melted. Global warming would also result in expansion of water volume by heat.
Estimates for rising sea water suggest that:
•during 1901 – 2000 sea level rose: 9 cm (4 inches);
•a predicted sea level rise for 2001 – 2100: 9 to 88 cm (4 to 40 inches).
There is a considerable range of future estimates.
•if the Greenland ice sheet melted, add 6.75 metres (25 ft);
•if the West Antarctic ice sheet melted, add 4.3 metres (16 feet).
The melting of these ice sheets would be enough to flood Florida and Bangladesh.
However, because average temperatures in the Arctic and Antarctic are well below 0°C, the melting point of ice, such a scenario is not likely in any foreseeable near future.
read full article here
http://www.abelard.org/briefings/global_warming.php
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