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HadCRUT4 current year’s temperature
GISTEMP current year’s temperature
GISTEMP global monthly temperature anomalies
Global-mean monthly-mean surface temperature anomalies with the base period 1951-1980. V denotes the major volcanic eruptions, and m and M denote the years of the minima and maxima of sunspot number cycles, respectively.
University of Colorado global-mean sea level
NOAA Laboratory for Satellite Altimetry global-mean sea level
ESRL multivariate ENSO index
NHC Current Atlantic hurricane map
NHC Atlantic Hurricane map
NSIDC Arctic sea ice extent
Mean sea ice anomalies, 1953-2012: Sea ice extent departures from monthly means for the Northern Hemisphere. For January 1953 through December 1979, data have been obtained from the UK Hadley Centre and are based on operational ice charts and other sources. For January 1979 through December 2012, data are derived from passive microwave (SMMR / SSM/I). Image by Walt Meier and Julienne Stroeve, National Snow and Ice Data Center, University of Colorado, Boulder.
NSIDC Antarctic sea ice extent
NOAA ESRL Mauna Loa atmospheric CO2