NERON is a US project to cover the country with automatic weather stations - one every 400 square miles, measuring temperature and precipitation accumulation every 5 minutes. By my calcuations, that means about 10,000 weather stations.

Given how much we don't know about weather and climate, and the importance, and given also how much we are spending on climate worries one way or another, this really looks like a good thing.

(H/T Climate Science Weblog)