Global warming over last 10 years, as measured by satellites, has been non-existent - IPCC's CO2 climate models predicted at least a .2 degree increase every 10 years
Read here. March 2012 lower atmosphere temperatures represent the warmest March ever in the satellite (UAH / NASA) temperature dataset.
Despite the warmest March (and btw, 10 years of huge CO2 emission increases) global warming over last 10 years has been non-existent as adjacent chart reveals. Robust March warming rebound from La Niña lows is a natural result.
As is always the case, the "global warming" experienced in March is not really "global." Regions, such as Alaska's land and seas, suffered with record March cold - 7 degrees below normal, while Iowa had the warmest March ever.