A warmer Arctic could permanently affect the pattern of the high-altitude polar jet stream, resulting in longer and colder winters over North America and northern Europe, U.S. scientists say. More: http://bit.ly/1oNn2GG
The maps here show the world as it is now, with only one difference: All the ice on land has melted and drained into the sea, raising it 66 m, (216ft) and creating new shorelines for our continents and inland seas.
There are more than five million cubic miles of ice on Earth, and some scientists say it would take more than 5,000 years to melt it all.
If we continue adding carbon to the atmosphere, we’ll very likely create an ice-free planet, with an average temperature of perhaps 27C (80F) instead of the current 14.5 C (58F).
Iceberg B-31 separating from the calving front of Antarctica’s Pine Island Glacier on November 13th, 2013 This iceberg is 700 square kilometers, 50% larger than previous icebergs in this area. Scientists are studying Pine Island Glacier closely because there is evidence that warmer seawater below the shelf will cause the glacier to thin and move more rapidly into the sea.
The paper found that by 2006, nations had already spent a quarter of that amount, or 234 gigatons. Meaning, the planet’s carbon budget would be exhausted by 2024—11 years from now— if emissions levels stayed the same, or even earlier if they continue their upward trend.