The annual State of the Climate Report has just been released by the National Oceanic and Atmospheric Administration (NOAA) for the year 2009. Over 300 scientists from 48 countries were involved. The report examines data for ten indicators of a warming world (as seen below).
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Of these ten indicators, seven are expected to increase in a warming world (Air Temperature Near Surface (Troposphere), Humidity, Temperature Over Oceans, Sea Surface Temperature, Sea Level, Ocean Heat Content, and Temperature Over Land). The data for each of these indicators does trend up, suggesting we are living in a warming world.
Finally, three indicators are expected to decrease in a warming world (Snow Cover, Glaciers and Sea-Ice). The data for each of these indicators does trend down, suggesting we are living in a warming world.
Conclusion: Climate change is "unequivocal".
Both the full report and an easy to read 10 page summary of the report is available here.
Reference:
Arndt, D. S., M. O. Baringer, and M. R. Johnson, Eds., 2010: State of the Climate in 2009. Bull. Amer. Meteor. Soc., 91 (6), S1-S224.
The 2007 IPPC report was released in April 2007 in Paris. It is available at:
IPCC (WG2) Climate Change Report 2007
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