are visual representations of global temperature.
This pattern features the global temperature change from 1850-2020 as arranged by interactive widget made by Professor Ed Hawkins (University of Reading) on the website: https://showyourstripes.info. These ‘warming stripe’ graphics are visual representations of the change in temperature as measured in each country over the past 100+ years. Each stripe represents the temperature in that country averaged over a year. For most countries, the data comes from the Berkeley Earth temperature dataset, updated to the end of 2020. For some countries (USA, UK, Switzerland, Germany, France & Sweden) the data comes from the relevant national meteorological agency. For each country, the average temperature in 1971-2000 is set as the boundary between blue and red colours, and the colour scale varies from +/- 2.6 standard deviations of the annual average temperatures between 1901-2000. For the global average only, the UK Met Office HadCRUT5.0 dataset is used and the colour scale goes from -0.75°C to +0.75°C. The stripes are usually shown for the period 1901-2020 but this can be longer or slightly shorter depending on the location and whether the data is available & considered robust.