Seeing Trends In Air Pollution
-
- Visualizations by:
- Trent L. Schindler
-
- Written by:
- Ellen T. Gray
- View full credits
Is the quality of our air getting any better? To help answer that question, scientists examined ten years of observations from the Ozone Monitoring Instrument aboard NASA's Aura satellite. One of the atmospheric gases it detects is nitrogen dioxide (NO2), a yellow-brown gas that is a common emission from cars, power plants and industrial activity. Nitrogen dioxide levels in the atmosphere are used as a general indicator of air quality as the gas can quickly transform into ground-level ozone, a major respiratory pollutant in urban smog. By creating high-resolution maps that show how much nitrogen dioxide concentrations went up or down for each year between 2005 and 2014, scientists were able to track evolving trends in air pollution across the world over the last decade. Watch the video to learn more.
For More Information
See NASA.gov
Credits
Please give credit for this item to:
NASA's Goddard Space Flight Center
-
Animator
- Trent L. Schindler (USRA) [Lead]
-
Writer
- Ellen T. Gray (NASA/HQ) [Lead]
-
Video editor
- Sophia Roberts (Advocates in Manpower Management, Inc.)
-
Scientist
- Bryan Duncan (NASA/GSFC)
-
Interviewee
- Bryan Duncan (NASA/GSFC)
-
Producers
- Kayvon Sharghi (USRA)
- Sophia Roberts (Advocates in Manpower Management, Inc.)
-
Videographers
- John Caldwell (Advocates in Manpower Management, Inc.)
- Rob Andreoli (Advocates in Manpower Management, Inc.)
Related pages
-
-
ID: 4412 Visualization
NASA Images Show Human Fingerprint on Global Air Quality – Release Materials
Read moreThis video provides an overview of the study findings. An HD version of this video is available here: Human Fingerprint on Global Air Quality || Using new, high-resolution global satellite maps of air quality indicators, NASA scientists tracked air pollution trends over the last decade in various regions and 195 cities around the globe. According to recent NASA research findings, the United States, Europe and Japan have improved air quality thanks to emission control regulations, while China, India and the Middle East, with their fast-growing economies and expanding industry, have seen more air pollution. Scientists examined observations made from 2005 to 2014 by the Ozone Monitoring Instrument aboard NASA's Aura satellite. One of the atmospheric gases the instrument detects is nitrogen dioxide, a yellow-brown gas that is a common emission from cars, power plants and industrial activity. Nitrogen dioxide can quickly transform into ground-level ozone, a major respiratory pollutant in urban smog. Nitrogen dioxide hotspots, used as an indicator of general air quality, occur over most major cities in developed and developing nations.The following visualizations include two types of data. The absolute concentrations show the concentration of tropospheric nitrogen dioxide, with blue and green colors denoting lower concentrations and orange and red areas indicating higher concentrations. The second type of data is the trend data from 2005 to 2014, which shows the observed change in concentration over the ten-year period. Blue indicated an observed decrease in nitrogen dioxide, and orange indicates an observed increase. Please note that the range on the color bars (text is in white) changes from location to location in order to highlight features seen in the different geographic regions. ||
-
ID: 12094 Produced Video
NASA Images Show Human Fingerprint on Global Air Quality – Release Materials
Read moreUsing new, high-resolution global satellite maps of air quality indicators, NASA scientists tracked air pollution trends over the last decade in various regions and 195 cities around the globe. According to recent NASA research findings, the United States, Europe and Japan have improved air quality thanks to emission control regulations, while China, India and the Middle East, with their fast-growing economies and expanding industry, have seen more air pollution. Scientists examined observations made from 2005 to 2014 by the Ozone Monitoring Instrument aboard NASA's Aura satellite. One of the atmospheric gases the instrument detects is nitrogen dioxide, a yellow-brown gas that is a common emission from cars, power plants and industrial activity. Nitrogen dioxide can quickly transform into ground-level ozone, a major respiratory pollutant in urban smog. Nitrogen dioxide hotspots, used as an indicator of general air quality, occur over most major cities in developed and developing nations.The following visualizations include two types of data. The absolute concentrations show the concentration of tropospheric nitrogen dioxide, with blue and green colors denoting lower concentrations and orange and red areas indicating higher concentrations. The second type of data is the trend data from 2005 to 2014, which shows the observed change in concentration over the ten-year period. Blue indicated an observed decrease in nitrogen dioxide, and orange indicates an observed increase. Please note that the range on the color bars (text is in white) changes from location to location in order to highlight features seen in the different geographic regions. ||
-
ID: 12096 Produced Video
Human Fingerprint on Global Air Quality
Read moreFor complete transcript, click here. || Using new, high-resolution global satellite maps of air quality indicators, NASA scientists tracked air pollution trends over the last decade in various regions and 195 cities around the globe. The United States, Europe and Japan have improved air quality thanks to emission control regulations, while China, India and the Middle East, with their fast-growing economies and expanding industry, have seen more air pollution.Scientist Bryan Duncan and his team examined observations made from 2005 to 2014 by the Ozone Monitoring Instrument aboard NASA's Aura satellite. One of the atmospheric gases the instrument detects is nitrogen dioxide, a yellow-brown gas that is a common emission from cars, power plants and industrial activity. Nitrogen dioxide can quickly transform into ground-level ozone, a major respiratory pollutant in urban smog. Nitrogen dioxide hotspots, used as an indicator of general air quality, occur over most major cities in developed and developing nations. ||
-
ID: 4179 Visualization
US Air Quality
Read moreAnyone living in the U.S. for the past decade may have noticed a change in the air. The change is apparent in NASA satellite images that demonstrate the country's reduction of air pollution, or more specifically, nitrogen dioxide.Nitrogen dioxide can impact the respiratory system, and it also contributes to the formation of other pollutants including ground-level ozone and particulates. The gas is produced primarily during the combustion of gasoline in vehicle engines and coal in power plants. Air pollution has decreased even though population and the number of cars on the roads have increased. The shift is the result of regulations, technology improvements and economic changes, scientists say.This visualization shows tropospheric column concentrations of nitrogen dioxide as detected by the Ozone Monitoring Instrument on NASA's Aura satellite, averaged yearly from 2005-2011. Blue and green denote lower concentrations and orange and red areas denote higher concentrations, ranging from 1e+15 to 5e+15 molecules per square centimeter, respectively. ||
-