The EMIT instrument will map 25% of the planet's surface in one year.
In dry areas such as large deserts, huge amounts of dust can get stirred up by winds and transported across vast distances. Based on the chemical composition of the dust, its presence in the air can have either a cooling or a warming effect on Earth's atmosphere. That can play a role in the progress of. At the moment, however, scientists don't know which type of dust has what kind of effect and whether all the world's atmospheric dust combined contributes to warming or cooling.
The region in northwestern Nevada was also mapped from an aircraft in 2018. By comparing the two sets of measurements, the NASA team could confirm that the EMIT instrument is accurate. "The data we’re getting from EMIT will give us more insight into the heating and cooling of Earth, and the role mineral dust plays in that cycle," Kate Calvin, NASA’s chief scientist and senior climate advisor, said in a."It's promising to see the amount of data we're getting from the mission in such a short time."
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