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Ocean heat content is a much more robust metric than surface air temperature for assessing global climate change because the ocean's heat capacity is greater than that of the atmosphere by many orders of magnitude. The data from 3000 world-wide ARGO buoys shows falling ocean heat content from 2003 to 2008 while climate models projected rising heat content.

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This article says the Gulf Stream is not the source of Europe's mild climate.

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This paper by Joe D'Aleo shows that most of the temperature changes over th last 100 years are related to a natural large scale cyclical climate flip-flop known now as the Pacific Decadal Oscillation.

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The article explain how ocean oscillations in the Pacific and Atlantic, and volcanic aerosols, affects global temperatures.

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In 2006 there was much media coverage and hype concerning a report the the North Altantic ocean circulation called the "Atlantic meridional thermohaline circulation" has slowed by about 30 percent between 1957 and 2004. This was blamed on human produced CO2 and was predicted to cause severe cooling in Europe. Well, it turns out this was all a false alarm, as discussed in this World Climate Report.