GODDARD SPACE FLIGHT CENTER / NASA EARTH OBSERVATORY / JESSE ALLEN / NASA / SCIENCE PHOTO LIBRARY GODDARD SPACE FLIGHT CENTER / NASA EARTH OBSERVATORY / JESSE ALLEN / NASA / SCIENCE PHOTO LIBRARY
Global carbon monoxide levels. Satellite-based map showing levels of carbon monoxide gas in the troposphere (the lower atmosphere) for April 2004. Produced by wildfires and human burning of fuels, carbon monoxide contributes to the formation of harmful ground-level ozone. Levels are measured in parts per billion by volume (ppbv), colour-coded from low (yellow) to high (orange and red). Grey areas are where no data was available. The data was obtained by the Measurements of Pollutants in the Troposphere (MOPITT) sensor on NASA's Terra satellite. The levels of carbon monoxide have decreased from 2000 to 2013 (see images C026/4700 to C026/4703).
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