The United States explores the use of space-based detection technology to monitor major air pollutants in North America The observing system construction plan was proposed by the Smithsonian Astrophysical Observatory and will be completed before 2017; the observing system will make full use of the payload of a commercial satellite with an orbit of 35,000 kilometers above the Earth â€™s equator, with a total cost not exceeding 9,000 Ten thousand U.S. dollars. Dr. Kelly Chance, the project leader and chief scientist of the Smithsonian Astrophysical Observatory, said that the observation system will be the first high-resolution and high-frequency monitoring of major contaminants in the troposphere of the North American continent. Pollutants such as nitrogen oxide, sulfur dioxide, formaldehyde and aerosol.
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