Met Office Hadley Centre observations datasets
Home >CRUTEM3 >CRUTEM3 Diagnostics >

CRUTEM3 Diagnostics: global average (NH+SH)/2 archived version December 2009

Calculating the global mean as the mean of the northern and southern hemisphere global averages helps prevent the value becoming dominated by the Northern hemisphere, where there are more observations.

Annual series smoothed with a 21-point binomial filter

Annual series

Annual timeseries

The red bars show the global annual average near surface temperature anomalies from 1850 to 2007. The error bars show the 95% uncertainty range on the annual averages. The green bar shows the provisional average for the present year. The thick blue line shows the annual values after smoothing with a 21 point binomial filter. The thin blue lines show the 95% uncertainty on the smoothed curve.

Smoothed annual series

Annual series

Annual timeseries

Monthly series

Monthly timeseries

Commercial and media enquiries

You can access the Met Office Customer Centre, any time of the day or night by phone, fax or e-mail. Trained staff will help you find the information or products that are right for you.
Contact the Met Office Customer Centre