0 = 1961–1990 global mean, °C 0.6
CO2 part per million
0.4
380
400
360
0.2 0.0
JMA
HADGL NOAA
340
NASA
320
-0.2
300
-0.4 -0.6 1850
280 260 1870
1890
1910
1930
1950
1970
1990
Sources: Climate Research Unit at the University of East Anglia (HADGL), NOAA NCDC, NASA GISS, Japan Meteorological Agency
2010
1850
1870
1890
1910
1930
Sources: Scripps Institute of Oceanography, NOAA
1950
1970
1990
2010