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Deep concerns as climate impacts on Gulf Stream flow

March 27, 2015

Deep concerns as climate impacts on Gulf Stream flow

Ocean scientists find evidence of an increasing slowdown in the Atlantic’s “invisible river” that could seriously affect weather and sea levels in the US and Europe.

LONDON, 25 March, 2015 − Climate scientists have once again confirmed an alarmingslowdown in the circulation of the Atlantic Ocean − the process that drives the current that warms Europe, and powers the planetary climate.

And this time, they are prepared to say that the changes are recent − and may be linked to global warming.

The Atlantic Conveyor is a great invisible river that flows in two directions at the same time. The equatorial surface waters − warm, and therefore less dense − flow towards the north in the form of the Gulf Stream. Around Greenland, the denser and colder Arctic waters sink to the ocean bottom and begin their progress towards the south.

It is the difference in temperatures that maintains the turnover and keeps the climate engine going.

As a consequence, the two-way traffic of warm and cold water redistributes heat around the planet and keeps Britain and maritime Europe in relatively mild conditions.

But as global average temperatures rise, and the Greenland ice sheet melts, ocean scientists have warned that the speed of the ocean turnover could be put at risk.

…click on the above link to read the rest of the article…

 

Maritime Temperature Records Shattered On Christmas Day

December 26, 2014

Maritime Temperature Records Shattered On Christmas Day.

HALIFAX – It felt more like spring than Christmas Day in the Atlantic provinces as temperature records were shattered and heavy rain pounded the region.

Environment Canada said it is not unusual to have warm temperatures on Christmas, but it was record-breakingly balmy in some areas of Nova Scotia, New Brunswick and Prince Edward Island.

“In the areas that the records have been broken, some of these records go back to the 1950s and 1940s,” said meteorologist Stephen Hatt on Thursday. “Since records have been kept on Christmas Day, some of these temperatures are the highest that we’ve seen.”

Hatt said in Summerside, P.E.I., the temperature climbed to 13 degrees, breaking the previous 50-year-old record of 11 degrees.

In Greenwood, N.S., the temperature soared to 17 degrees, breaking the previous record of 15 degrees. The old record of 13 degrees in Moncton, N.B., was also broken as temperatures reached 16 degrees.

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Olduvai IV: Courage
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Olduvai II: Exodus
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