A New Instrument is Going to the ISS to Study the Climate Impact of Dust in Earth's Upper Atmosphere - by spacewriter
Desert areas on our planet produce most of the dust that gets into the atmosphere. However, it’s tough for scientists to get useful samples from those places since they are pretty remote. EMIT’s imaging spectrometer will act as an orbiting geologist. It will map the mineral dust sources and give information about the color and composition of all dust-producing areas on the planet.
When strong winds on one continent stir up mineral rock dust , the airborne particles can travel thousands of miles to affect entirely different continents. Material suspended in the air can heat or cool the atmosphere and Earth’s surface. This heating or cooling effect is the focus of NASA’s Earth Surface Mineral Dust Source Investigation mission. Courtesy NASA.Particles of dust have different colors due to their source minerals, something EMIT will be able to detect.
Some of the most important parts of EMIT’s mission focus on climate change and climate models. When scientists work on climate models now, their representation of dust is not as good as it could be. The color and composition information provided by EMIT will improve those climate models. It should also better reflect the effects of mineral dust on climate and what effect climate has on dust. In the long run, it will provide detailed data about how climate change could create more dust sources.
scientists should get a better understanding of how the amount and composition of dust in arid regions may change under different climate and land-use scenarios. They’ll also gain a clearer idea of how these changes and many others may impact Earth’s climate in the future.This illustration shows how NASA’s EMIT will be attached to Express Logistics Carrier 1, on the ISS.EMIT will be attached to the Express Logistics carrier 1 on the International Space Station.
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