07 Nov '17, 3pm

Satellite Tracks Ozone Pollution by Monitoring Its Key Ingredients

Ozone pollution near Earth’s surface is one of the main ingredients of summertime smog and a primary cause of poor air quality. Yet it is not directly measurable from space because of the abundance of ozone higher in the atmosphere , which obscures measurements of surface ozone. Now NASA-funded researchers have devised a way to use satellites to measure the precursor gases that contribute to ozone formation. By differentiating among three possible conditions that lead to ground-level ozone production, the observations may assist air quality managers in assessing the most effective approaches to emission reduction and air quality improvements. At high altitude, ozone acts as Earth’s sunscreen from harmful ultraviolet radiation. At low altitudes, ozone is a health hazard contributing to respiratory problems like asthma and bronchitis. Near the ground, the gas is formed throu...

Full article: https://earthobservatory.nasa.gov/IOTD/view.php?id=91234&...

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