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- Global Warming Trend is ‘Only One-Half of the Climate Model Simulations,’ Says New Paper
Global Warming Trend is ‘Only One-Half of the Climate Model Simulations,’ Says New Paper
A new satellite global temperature data series bolsters the case that climate models are running way too hot.
by Ronald Bailey Reason.com
The latest suite of climate models collectively projects that the average temperature of the global atmosphere should be increasing at the rate of about 0.28–0.29 degrees Celsius per decade. But how do these model projections compare to actual temperature data? It depends.
Let’s first take a look at research using surface thermometer data assembled from weather stations, ocean-going ships, and buoys. The Berkeley Earth team reports that since 1980, the global average temperature is increasing at the rate of 0.19 degrees Celsius per decade. The National Oceanic and Atmospheric Administration (NOAA) finds that the global average temperature has been increasing at the rate of 0.18 degrees Celsius per decade since 1981. NASA’s GISTEMP data set reports an increase of 0.19 degrees Celsius per decade. The U.K.’s Hadley Centre finds the increase is about 0.20 degrees Celsius per decade.