In part 2 we'll see that seasonal extreme warm anomalies in 2009 - 2011 are well above the 1951 - 1980 base period typically used in GISTEMP analyses - indicative of global warming's role in heatwaves. (skepticalscience.com)
It has no bearing on the record since the record for GISTEMP is 2005. (wattsupwiththat.com)
The NASA GISTEMP global temperature anomalies for March are now available. (critical-angle.net)