What is the TEMPO satellite?

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About TEMPO satellite

Tropospheric Emissions Monitoring of Pollution (TEMPO) monitors major air pollutants across North America.
Its monitoring range extends from Canada’s oil sands to the Yucatán Peninsula and across the Atlantic to the Pacific Ocean.
It is part of a virtual constellation with South Korea’s Geostationary Environment Monitoring Spectrometer (GEMS) and the European Space Agency’s upcoming satellite, aiming for comprehensive air pollution monitoring over the Northern Hemisphere.
It will make important scientific observations, including that of ozone, nitrogen oxide, sulphur dioxide and formaldehyde levels.
It is capable of measuring air quality over North America hourly during the daytime with a resolution of several square miles.
It monitors the effects of everything from rush-hour traffic to pollution from forest fires and volcanoes.
The present pollution-monitoring satellites are in low Earth orbit (LEO), but this new monitoring instrument is hosted in geostationary orbit.
It was designed for a 20-month operation.

Q1) What is Ozone?

Ozone is an odorless, colorless gas made up of three oxygen molecules (O3) and is a natural part of the environment. It occurs both in the Earth’s upper atmosphere, or stratosphere, and at ground level in the lower atmosphere, or troposphere.

Source: 10 things to know about NASA’s TEMPO satellite that monitors air pollution hourly over North America