The temperature history of the satellite era shows a trend of + 1,64°C per century as of May 2008 when combining five independent data sets. This is rather at the lower end of the IPCC projections and there are many indications that this upward trend will not continue.

But for today, I just give you the facts. As promised before, I plotted a superimposed chart combining five different datasets of global temperature history. Please note that for one of them - GISS-NASA - I chose the one “meteorological stations only”, which means emphasis is given on those weather stations the data whereof are under constant revision, including those on parking lots, near air conditioners and on ships, etc, etc. But this is the domain of expertise of http://climateaudit.org and http://wattsupwiththat.wordpress.com.

Global Temperature History 1979-2008 - 5 indices

Global Temperature History 1979 - 2008 - HadCRUT3

Global Temperature History 1979-2008 - GISS metstationsonly

Global Temperature History 1979-2008 - NCDC

Global Temperature History 1979-2008 - RSS

Global Temperature History 1979-2008 - UAH