## Sunday, October 03, 2010

### RSS: September 2010 coolest month of the year so far

RSS AMSU have released their global temperature data for September 2010. The global anomaly was at +0.525 °C which is the lowest anomaly in 2010 so far - but it was enough to keep September 2010 the warmest September on the RSS record; it's followed by +0.494 °C in September 1998.

Note that the satellite datasets - UAH and RSS - actually and unusually show 2010 as relatively warmer than the surface datasets such as HadCRUT3 and GISS. The latter two identified July 2010 and August 2010 as the 7th warmest July and August, respectively. We will have to wait for the September figures from HadCRUT3 and GISS.

1. Dear Lubos,

if you check the GISS data for the entire year you shall see that the first 6 months in their data set were much warmer than the first 6 months of 1998. So, overall, 2010 at this point in the GISS seems to be warmer than 1998, while both RSS and UAH show 2010 being cooler.

2. Dear Ivan, thanks, yes, very plausible. But starting from July 2010, including, it's the other way around.

3. ThePeSla
Lubos,

I have a post on pelsa.blogspot called Climate and Culture. In it I am wonder if we can shed more light on the human global warming issue as a matter of science if we consider the climate graphs of wetness and dryness.

Thank you.

4. There is quite a divergence between RSS and UAH since June and I suspect it will be the same for Sept.