There might be a better question to ask. Is the global cooling effect resulting from the downturn of the sun's magnetic field already underway?
http://gcdailyworld.com/story/1312291.html
This January was the coldest worldwide since January 1989.

Last years news articles talked about the unusual loss of Arctic ice as evidence that man-made global warming was underway. A recent NOAA report shows that ice levels which had shrunk from 5 million square miles in January 2007 to just 1.5 million square miles in October, are almost back to their original levels.
http://www.newsmax.com/insidecover/g.../19/73798.html
In China, snowfall was so heavy that over 100,000 houses collapsed under the weight of snow. Cold weather in Vietnam killed nearly 60,000 cattle. This winter is the coldest on record in Afghanistan. The death toll of people killed by unusually severe cold weather in Afghanistan since December last year has risen to 926. It also killed 100,000 cattle in Afghanistan. Many cold records are falling this winter especially in Asia.

All of this is happening at a time when the strength of the sun's magnetic field (as evidenced by the effects of the solar winds on perturbing the Earth's magnetic field - Ap index, AA index) are at unusual lows.