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Global average temperature series

Combined land-surface air temperature and sea-surface temperature

Global average temperature time series

The red bars show the global annual average near-surface temperature anomalies from 1850 to 2009. The error bars show the 95% uncertainty range on the annual averages. The thick blue line shows the annual values after smoothing with a 21 point binomial filter. The dashed portion of the smoothed line indicates where it is influenced by the treatment of the end points. The thin blue lines show the 95% uncertainty on the smoothed curve. Data are from the HadCRUT3 dataset. Annual Data and smoothed data are available in this format.

Land-surface air temperature

Global average land surface air temperature time series

The red bars show the global annual average land-surface air temperature anomalies from 1850 to 2009. The error bars show the 95% uncertainty range on the annual averages. The thick blue line shows the annual values after smoothing with a 21 point binomial filter. The dashed portion of the smoothed line indicates where it is influenced by the treatment of the end points. The thin blue lines show the 95% uncertainty on the smoothed curve. Data are from the CRUTEM3 dataset. Annual Data and smoothed data are available in this format.

Sea-surface temperature

Global average sea-surface temperature time series

The red bars show the global annual average sea surface temperature anomalies from 1850 to 2009. The error bars show the 95% uncertainty range on the annual averages. The thick blue line shows the annual values (excluding the value for the current year) after smoothing with a 21 point binomial filter, the dashed portion of the smoothed line indicates where it is influenced by the treatment of the end points. The thin blue lines show the 95% uncertainty on the smoothed curve. Data are from the HadSST2 dataset. Annual Data and smoothed data are available in this format.


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