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Politics : Formerly About Advanced Micro Devices -- Ignore unavailable to you. Want to Upgrade?


To: Brumar89 who wrote (1014535)5/5/2017 1:55:11 PM
From: Wharf Rat  Read Replies (2) | Respond to of 1574637
 
NCAR is using a different baseline and data set.

They point out:
Since there is no universally accepted definition for Earth’s average temperature, several different groups around the world use slightly different methods for tracking the global average over time, including:

NASA Goddard Institute for Space Studies
NOAA National Climatic Data Center
UK Met Office Hadley Centre
The important point is that the trends that emerge from year to year and decade to decade are remarkably similar—more so than the averages themselves. This is why global warming is usually described in terms of anomalies (variations above and below the average for a baseline set of years) rather than in absolute temperature.

Learn more:

Global temperature (NASA) Global surface temperature anomalies (NOAA)



www2.ucar.edu