NOAA’s Tom Karl explains temperature data supporting conclusion: ‘global warming is unequivocal’

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The American Meteorological Society yesterday presented a briefing by Tom Karl in the U.S. Capitol Building on “Detecting Climate Change: The Temperature Record.” We attended and heard Karl, the Interim Director of NOAA Climate Services and Director of the NOAA National Climatic Data Center, discuss the data and methods NOAA uses to calculate global and national temperature trends and anomalies. 

An overview of the briefing reads: “This includes historical changes in data coverage, processing techniques, bias corrections, and assessments of uncertainty.  When viewed with independent methods and data used by other agencies and governments to track temperature and temperature-related changes, the results have provided the basis for the statement ‘global warming is unequivocal.’”

Karl’s presentation is available here (11 MB PowerPoint).

Earlier CSW posts:

Cooler Heads Coalition serves up tired denialist fare at Hill “Climategate” lunch briefing

Tom Karl discusses plans for NOAA Climate Service

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