Earth Surface Mineral Dust Source Investigation/ EMIT

NASA's Earth Ventures Instrument (EVI-4) mission, also known as EMIT, is using imaging spectroscopy in the visible and short-wave infrared range to map the mineral composition of arid dust source regions from the International Space Station.

  • These maps will be used to model the role of mineral dust in the radiative forcing of the atmosphere, which refers to the warming or cooling effect on the atmosphere. The EMIT instrument was developed at NASA's Jet Propulsion Laboratory and launched on July 14, 2022.
  • It observes Earth from outside the International Space Station, with data being delivered to the NASA Land Processes Distributed Active Archive Center for use by other researchers and the public.

Discovery of "Super-Emitters"

  • On October 25 of last year, NASA announced that the EMIT instrument had identified more than 50 "super-emitters" in central and west Asia and the southwestern United States.
  • According to NASA, these super-emitters, which can include facilities, equipment, and other infrastructure in sectors such as fossil fuel, waste, or agriculture, emit methane at high rates.

The EMIT mission is providing valuable insights into the composition of arid dust source regions and the role of mineral dust in the atmosphere. Its discovery of super-emitters is also shedding light on sources of methane emissions, which can have a significant impact on the Earth's climate. The data collected by EMIT will be useful for researchers and the public as we continue to study and understand Earth's environment.


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