HadCRUT4 is a gridded dataset of global historical surface temperature anomalies, relative to a 1961-1990 reference period.
Data are available for each month since January 1850, on a 5 degree grid.
The gridded data are a blend of the CRUTEM4 land-surface air temperature dataset and the HadSST3 sea-surface temperature (SST) dataset. The dataset is presented as an ensemble of 100 dataset realisations that sample the distribution of uncertainty in the global temperature record.
Dataset supports the following projects:
|Met Office Hadley Centre - Observations and Climate|