These 291 weather stations have been collecting a wide range of weather data, including temperature, precipitation, humidity, wind speed and direction, and solar radiation for at least 100 years.
The commitment to keep these running form the backbone of our ability to monitor climate change.
Source: https://public.wmo.int/en/media/news/centennial-weather-stations-are-vital-climate-monitoring
#ClimateLiteracy #Instruments #ClimateChange 
This data was meticulously recorded by hand. For example there were 65,000 sheets of paper containing hand-written measurements of rainfall taken all across the UK & Ireland before 1960.
These have now been digitised!
See this incredible story here as told by Ed Hawkins who was involved in this process:
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