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HadCRUT.5.1.0.0 (current version)

HadCRUT.5.1.0.0 supersedes HadCRUT.5.0.2.0. Previous versions can be found on the HadCRUT5 versions page. Data can be download from the HadCRUT.5.1.0.0 download page.

The following updates are included in HadCRUT.5.1.0.0:

The land air temperature data source updated from CRUTEM.5.0.2.0 to CRUTEM.5.1.0.0. This updates station data series for a number of countries. See the CRUTEM.5.1.0.0 release notes for details.
The sea surface temperature data source has been updated from HadSST.4.0.1.0 to HadSST.4.1.1.0. See the HadSST.4.1.1.0 download page and HadSST.4.1.1.0 product user guide for details.
The sea ice data set used to define air temperature / sea surface temperature weighting has been updated to HadISST.2.2.2.0.
The filenames for the non-infilled variant of HadCRUT5 have been updated to more clearly indicate that they contain data for the non-infilled rather than the spatially infilled analysis.

Effects on global and hemispheric average time series

The following diagnostic plots show comparisons of global and hemispheric time series for HadCRUT.5.1.0.0 (this version) and HadCRUT.5.0.2.0.

Global series (NH+SH)/2

Hemispheric series

Tropics series (30S-30N)

Latitude band series

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