Count me as enlightened. I had no idea that current measurements of CO2 and other GHG (green house gas) were designed to filter out local effects. New initiatives are changing that.
In a first-of-its kind experiment, a group of university and government scientists has begun to monitor greenhouse gases in the air above San Francisco.
With probes stuck high on Sutro Tower, they are trying to understand whether the state’s aggressive anti-warming laws are working. They also want to judge how accurately air experts have estimated emissions from power plants, farms, factories and cars and trucks.