The Tropospheric Emissions: Monitoring of Pollution (TEMPO) mission will make accurate observations of tropospheric pollution concentrations of ozone, nitrogen dioxide, sulfur dioxide, formaldehyde, and aerosols with high resolution and frequency over North America. The instrument will be deployed on a commercial geostationary satellite at 91 degrees west. TEMPO will observe Earth's atmosphere in ultraviolet and visible wavelengths to determine concentrations of many key atmospheric pollutants. From geostationary orbit, these observations can be made several times each day when North America is facing the sun instead of once per day, which is the case with current satellites orbiting a few hundred miles above the surface.

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