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Annual Global Temperature Records
Scientists at NASA report each year on the long-term trend of rising air temperatures over Earth's land and sea surfaces. The team assembles its analysis with publicly available data from roughly 6,300 meteorological stations, ship and buoy-based observations, and Antarctic research stations.
Separate analyses by NASA and NOAA agree that the past year was hotter than any other since 1880. The ten warmest years in the instrumental record, with the exception of 1998, have now occurred since 2000.