Killing one person is murder, killing 100,000 is foreign policy
You will find detailed NCDC/NOAA scientific references for this graphed data at the foot of the page if you can even be bothered to actually open the link
The baseline for GISS for example is 14 °C, with the 1880 starting point at 13.8 °C.
If they saw a 3 °C increase, it would be 16.8 °C or 289.95 K.
I don't know where you are going, but the models predicted warming of .21°C per decade,
For the last 1.4 decades the warming has been around .04 °C per decade.
At least according to the Nature article.
Climate change: The case of the missing heat : Nature News & Comment
If we look apply the same measurement to the GISS, (Through 2012)
From 1998 (14.61 °C) to 2012(14.58 °C) the warming was a negative .021 °C per decade,
Or in scientific terms, cooling!
I should have added the invalidation criteria.
If I am wrong the daytime and nighttime sky IR spectra should have equal amounts
of the CO2 lines at 9.6 and 10.6 um.
If these lines only exists when the CO2 (and hence the nitrogen) is exposed to sunlight,
then I may not be right, but I am not entirely wrong.
Such is the nature of the beast!
Americans are so enamored of equality that they would rather be equal in slavery than unequal in freedom.
Alexis de Tocqueville