Not exact matches
This
baseline is
slightly different from the
baseline used in the IPCC report, which was 1986 - 2005.
Each agency uses
different baselines and their numbers can differ
slightly from each other because of
different ways of processing the temperature data.
(NASA, which uses a
different baseline and
slightly different methods, put October in second place.)
Each agency has
slightly different methods of processing the data and
different baseline periods they use for comparison, as do other groups around the world that monitor global temperatures, leading to
slightly different year - to - year numbers.
Scientists from NOAA, WHO, and the UK Met Office use much of the same raw temperature data, but with
different baseline periods or
slightly different methods to analyze Earth's polar regions and global temperatures.
You can see Blue (HadCRU)
slightly better in top in the past and see Blue much more in bottom in recent years, making Rose / Bates» point more clearly than the Rose graph with two
different baselines.