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Earth Surface Mineral Dust Source Investigation (EVI-4) (EMIT on ISS)

Status: Future, Formulation
Mission Category: Earth System Science Pathfinder Program, Earth Venture Class, Earth Venture-Instrument
Launch Date: 2022

The Earth Surface Mineral Dust Source Investigation (EMIT) will use a sensor mounted to the exterior of the International Space Station (ISS) to determine the mineral composition of natural sources that produce dust aerosols around the world. By measuring in detail which minerals make up the dust, EMIT will help to answer the essential question of whether this type of aerosol warms or cools the atmosphere. Robert Green of JPL is the principal investigator. EMIT's hyperspectral instrument will measure the different wavelengths of light emitted by minerals on the surface of deserts and other dust sources to determine their composition. The EMIT sensor is based in part on NASA's Moon Mineralogy Mapper instrument aboard the Indian Space Research Organization's Chandrayaan-1 spacecraft.

The EMIT team brings together broad expertise that covers mineral measurements, soil science, remote sensing of surface properties and Earth system modeling. The project's modeling component will use the data collected to advance our understanding of the role of atmospheric dust in Earth's climate and better predict how it can be expected to change in the future.

Key Earth Surface Mineral Dust Source Investigation (EVI-4) Facts

Altitude:Distance from sea level. 400km
Inclination: 51.6°
Origination: NASA
Instruments: hyperspectral instrument
Principal Investigator(s): Robert Green, NASA JPL