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Welcome to the website! Our goal is to show how satellite data of air pollution may be used for health and air quality applications, which may be as simple as wanting to see how air pollution has changed over time in your city.  As the example below illustrates, the satellite data may be used to monitor pollutant trends over time.

Before and After: World Nitrogen Dioxide Levels, 2005-2016

Global ABS Visualization for 2005Global ABS Visualization for 2014
Image Credit: 
NASA's Goddard Space Flight Center

The slider above shows how levels of Aura Ozone Monitoring Instrument (OMI) NO2 data have changed over the last decade around the world.  Slide the bar from left to right to see how NO2 has changed from 2005 to 2016.  More information on trends for each region and more than 300 world cities can be found under the various tabs.


A Little Bit about the NASA Aura Mission

The NASA Aura satellite has been collecting observations of air pollutants in Earth's atmosphere for more than a decade.  One of the four instruments on the Aura satellite, the Ozone Monitoring Instrument (OMI), collects data on several important air pollutants:  nitrogen dioxide (NO2), sulfur dioxide (SO2) and formaldehyde (HCHO).