Data mining old ship logs for weather data, to gain more insight into climate change. The Met Office and the National Maritime Museum in UK worked together with the University of Oxford to develop this site. The Museum opened up its archive of old ship log books where weather reports were written daily by captains. This handwritten information is now being "crowdsourced" and digitized by volunteers over the web. In less than 6 months more than 400 thousand pages of those log books have been digitized and scientist are already using the data to understand how was our weather 100 years ago and compare it to what is now.
An example on how citizens, together with government opening data can help society by improving our understanding of climate change.
Go to Old Weather