The Sentinel-5 Precursor mission instrument collects data useful for assessing air quality. The TROPOMI instrument is a multispectral sensor that records reflectance of wavelengths important for measuring atmospheric concentrations of ozone, methane, formaldehyde, aerosol, carbon monoxide, nitrogen oxide, and sulphur dioxide, as well as cloud characteristics at a spatial resolution of 0.01 arc degrees.

A measure of the prevalence of aerosols in the atmosphere. Ideal for tracking the evolution of episodic aerosol plumes from dust outbreaks, volcanic ash, and biomass burning.

Dataset availability: 2018-07-04 - Present

Cloud characteristics including: fraction, height and pressure for base and top, optical depth, and surface albedo.

Dataset availability: 2018-07-04 – Present

Concentrations of Carbon monoxide (CO) and water vapor. CO is an important atmospheric trace gas for our understanding of tropospheric chemistry. Main sources of CO are combustion of fossil fuels, biomass burning, and atmospheric oxidation of methane and other hydrocarbons.

Dataset availability: 2018-06-28 - Present

Formaldehyde concentration. Formaldehyde is an intermediate gas in almost all oxidation chains of non-methane volatile organic compounds (NMVOC), leading eventually to CO₂. Sources include vegetation, fires, traffic and industrial.

Dataset availability: 2018-10-02 – Present

Total, tropospheric, and stratospheric nitrogen dioxide concentration. Nitrogen dioxide enters the atmosphere as a result of anthropogenic activities such as fossil fuel combustion and biomass burning, as well as natural processes including microbiological processes in soils, wildfires and lightning.

Dataset availability: 2018-06-28 - Present

Total atmospheric column ozone concentration. Ozone shields the biosphere from solar ultraviolet radiation. In the troposphere, it acts as an efficient cleansing agent, but at high concentrations it also becomes harmful to the health of humans, animals, and vegetation. Ozone is also an important greenhouse-gas contributing to ongoing climate change.

Dataset availability: 2018-07-10 – Present

Atmospheric sulphur dioxide (SO₂) concentration. SO₂ enters Earth’s atmosphere through both natural and anthropogenic processes, though the majority is of anthropogenic origin. SO₂ emissions adversely affect human health and air quality and also have an effect on climate through radiative forcing.

Dataset availability: 2018-07-10 - Present

Atmospheric methane (CH₄) concentration. After carbon dioxide (CO₂), it is the most important contributor to the anthropogenically enhanced greenhouse effect. It enters Earth’s atmosphere through both natural and anthropogenic processes, though the majority is of anthropogenic origin.

Dataset availability: 2019-02-08 – Present