WeatherRescue.org has used volunteer citizen scientists to rescue >3 million observations taken between 1883-1910. The first set were hourly pressure, temperature, wind, rainfall for the mountain of Ben Nevis and the town of Fort William for 1883-1904. The second set are from the UK Daily Weather Reports, consisting of twice-daily pressure, temperature and daily rainfall observations, for the period 1900-1910. Locations all over Europe are included.
Citizen science from previously scanned images