View NASA image feature; Go to NASA's Air Quality web site ; High resolution images downloadable at NASA's Scientific Visualization Studio; Technical description of figure: The images above shows satellite data of NO 2 from the Aura Ozone Monitoring Instrument (OMI) over the Northeast United States in March. Some of the largest absolute changes in nitrogen dioxide have occurred in this corridor.NASA Goddard's Scientific Visualization Studio/T. "While our air quality has certainly improved over the last few decades, there is still work to do â ozone and particulate matter are still problems," said Bryan Duncan, an atmospheric scientist at NASA's Goddard Space Flight Center in Greenbelt, Maryland.Decision makers and regulatory agencies like EPA have long relied on data from ground sites to inform air quality science and forecasts. These cities include Richmond, Washington, Baltimore, Philadelphia, New York City, Boston and all the smaller cities in between. Pandemic Before and After: Nitrogen Dioxide data 2017-2019 versus 2020. They show how nitrogen dioxide concentrations during spring and summer months, averaged from 2005-2007, compare to the average from 2009-2011.Measurements of nitrogen dioxide from OMI depict the concentration of the gas throughout a column of air in the troposphere, Earth's lowest atmospheric layer. "The new NASA images also take a close up look at the Ohio River Valley, Northeast Corridor, and some populous U.S. cities. SchindlerThe impact of technology to reduce emissions of nitrogen dioxide and sulfur dioxide from coal-fired power plants is apparent in satellite imagery, which shows the signal of pollution blink out over time. It's also a good proxy for the presence of air pollution in general.Air pollution has decreased even though population and the number of cars on the roads have increased. NASA's Discover-AQ, a multi-year airborne mission, is flying this summer in Denver to learn more about the region's wide range of air pollutants.NASA Goddard's Scientific Visualization Studio/T. Nitrogen dioxide over Europe. "NASA measurements of air quality have value to the people with the authority to control emissions and develop policy. The gas is produced primarily during the combustion of gasoline in vehicle engines and coal in power plants. NASA’s real-time portal for Mars exploration, featuring the latest news, images, and discoveries from the Red Planet. The shift is the result of regulations, technology improvements and economic changes, scientists say.In fact, about 142 million people still lived in areas in the United States with unhealthy levels of air pollution, according to the EPA. The change is apparent in new NASA satellite images unveiled this week that demonstrate the reduction of air pollution across the country.After ten years in orbit, the Ozone Monitoring Instrument (OMI) on Nitrogen dioxide is one of the six common pollutants regulated by the U.S. Environmental Protection Agency (EPA) to protect human health.
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