Nitrogen Dioxide Air Pollution Over North America

In this visualization, high levels of nitrogen dioxide can be seen over multiple urban areas across the U.S., Canada, Mexico and the Caribbean. Detailed views of three regions show high levels of nitrogen dioxide over cities in the morning, and enhanced levels of nitrogen dioxide over major highways. As the day progresses, the morning pollution often dissipates. Later in the afternoon, it will rise again as the cities enter their second rush hour of the day. Because TEMPO uses visible sunlight to make measurements, it cannot see pollution below clouds. Cloudy areas appear as missing data in the visualization. [NASA]

Source: https://svs.gsfc.nasa.gov/5142