Collect current data from 22,000 water monitoring points in 27 countries and 1,000 air monitoring stations in 32 countries, and integrate it with historical data collected over the years
B. Brandherm, and A. Kröner. Proceedings of the Seventh International Conference on Intelligent Environments (IE 2011), Nottingham, UK, page 374--377. Los Alamitos, CA, IEEE Computer Society, (2011)