Met Office Hadley Centre observations datasets
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HadCRUT4 time series

These 'best estimate' series are computed as the medians of regional time series computed for each of the 100 ensemble member realisations. Time series are presented as temperature anomalies (deg C) relative to 1961-1990.

Quoted uncertainties are computed by integrating across the distribution described by the 100 ensemble members, together with additional measurement and sampling error and coverage uncertainty information.

The data files contain 12 columns:

More details are given in the paper introducing the dataset.

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