An ice-free Arctic Ocean has happened before

NOT A LOT OF PEOPLE KNOW THAT

By Paul Homewood

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http://www.rationaloptimist.com/blog/arctic-sea-ice/

A bit of common sense from Matt Ridley:

When the Arctic loses all its sea ice one summer, will it matter?

My Times column on how the Arctic sea ice has melted in late summer before, between 10,000 and 6,000 years ago:

The sea ice in the Arctic Ocean is approaching its annual nadir. By early September each year about two thirds of the ice cap has melted, then the sea begins to freeze again. This year looks unlikely to set a record for melting, with more than four million square kilometres of ice remaining, less than the average in the 1980s and 1990s, but more than in the record low years of 2007 and 2012. (The amount of sea ice around Antarctica has been increasing in recent years, contrary to predictions.)

This will disappoint some. An expedition led by David Hempleman-Adams to circumnavigate the North…

View original post 261 more words

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