Research on the air in London suggests the ultra low emission zone (Ulez) may be working better than expected, but the heating of buildings may become a barrier to reducing air pollution.
The research was done from the top of the BT Tower. Sam Cliff, of the University of York, said: “The observatory is a tiny room, 35 floors up, surrounded by telecommunications kit and crammed full of scientific instruments. The view is great but on windy days maintenance can be really challenging.” From the top of the tower, Cliff measured air pollution drifting upwards from the streets and buildings below, allowing him to gradually map the sources within about 3.5km.
