image credit: Jeff Schmaltz, MODIS Rapid Response System, Goddard Space Flight Center; image source; larger image
The Arctic Oscillation
Great Britain is usually exempt from the cold winter weather in other countries of the same latitude. (Warm air from the Gulf Stream keeps temperatures mild; read more here.) However, as the image above shows, Britain's winter was much colder than usual. One reason for this change is The Arctic Oscillation, the process of alternating pressure regions in the northern hemisphere. For more on Britain's recent and upcoming weather, check out this article from the Guardian discussing El Nino.
Atmospheric Dry Spell Eases Global Warming
This article from NPR offers insight into a few factors affecting global temperatures. For more on how changing temperatures might affect you, see these pages on stronger hurricanes (NOVA) and the nor'easters (NOAA).