EMIT will address the question of how mineral dust from the arid regions of Earth affects our planet’s climate.
, as the space station passed over Western Australia.
Scientists know that mineral dust originates in deserts and drylands and can get carried from these arid regions by strong winds. Very little, however, is known about the chemical composition of this dust. This means that we don’t know whether the dust contributes to the overall warming or cooling of the planet.
The first measurements from the device were used by the EMIT team to create an image cube that shows the spectral signature of elements in Western Australia, including exposed soils, vegetation, agricultural areas, rivers, and clouds. The device can also measure the signature of light reflected by rock, snow, ice, and human-created structures.
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