This prototype visualisation uses the HadCRUT4 dataset, a collection of global surface temperature since 1850, which uses data from the Met Office Hadley Centre and the Climatic Research Unit at UEA.

In this visualisation you can explore this surface temperature data, and some of the global events which have affected it.

Temperatures are expressed as the difference from average temperature between 1961-1990. The map shows 12-month rolling averages.