GLOBAL SURFACE
CLIMATE REANALYZER-ECMWF/ERA (Day-0) (BASE: 1979-2000) : +1.31° (over the last 35 years)
NCAR/NCEP T62 reanalysis (Day-3) (BASE: 1981-2010): +0.83° (over the last 30 years)
NASA-GISS (Day-0) (BASE: 1951-1980) : +1.6° (over the last 60 years)
CENTURY NORMAL (Day-0) (BASE: 1901-2000) : +1.65° (over the last 75 years)
NASA since 1880 : +1.4° (over the last 145 years)