Climate hypothesis.pdf

warming trend in 20th century, but it not looks like forced by anthropogenic greenhouse gases,
because most of warming occurred before 1980 and after 1980 dynamic is near flat.

0.9
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1900

1910

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Fig. 13. Blue line - observations, green line - CMIP5/IPCC climate models mean.

0.9
0.7
0.5
0.3
0.1
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-0.3
-0.5
-0.7
-0.9
1900

1910

1920

1930

1940

1950

1960

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1980

1990

2000

2010

Fig. 14. Blue line - observations, green line - CMIP5/IPCC climate models mean.
5. Analysis and datasets
Most of the used datasets are freely available at Climate Explorer site (climexp.knmi.nl).
And all the calculations were made in Excel by means of standard functions. A reconstruction of
monthly mean surface temperature anomalies, TR , from input parameters is performed by following
equation:
n

T ( t ) = c o + ∑ c i ⋅ X i ( t − ∆t i ) ,
i =1

(1)