Tuesday, March 1, 2016

A Satellite View of Pollution on the Ground: Long-Term Changes in Global Nitrogen Dioxide

I have a news story out in this month's issue of Environmental Health Perspectives on a groundbreaking new study offering a global view of long-term changes in ground-level nitrogen dioxide, assessed by satellite using remote sensing instruments. What it finds is intriguing, if not exactly shocking: while levels have been reduced over North America and Europe, they have increased by a far larger amount over East Asia (primarily China). And on the whole, far more people live in areas where the air got wore than live in regions that cleaned up their air -- by a wide margin. "You can see on a broad scale how we’ve sort of just shifted this problem around,” one of my sources said. Read the full article here.