A041-0001
Mission Development Status and Algorithm Testing of the NASA Earth Surface Mineral Dust Source Investigation

Tuesday, 8 December 2020
Poster
Robert O Green1, Natalie M Mahowald2, David R Thompson3, Roger Nelson Clark4, Bethany L Ehlmann5, Paul A Ginoux6, Olga V. Kalashnikova3, Ron L Miller7, Greg S Okin8, Thomas H Painter9, Carlos Pérez García-Pando10, Vincent J Realmuto11, Gregg A Swayze12, Eyal Ben-dor13, Philip G Brodrick1, Longlei Li2, Nimrod Carmon3, Benjamin R Phillips14 and Kevin Reath14, (1)NASA Jet Propulsion Laboratory, Pasadena, CA, United States, (2)Cornell University, Earth and Atmospheric Sciences, Ithaca, NY, United States, (3)Jet Propulsion Laboratory, California Institute of Technology, Pasadena, CA, United States, (4)USGS, Denver, CO, United States, (5)California Institute of Technology, Division of Geological and Planetary Sciences, Pasadena, CA, United States, (6)NOAA/Geophysical Fluid Dynamics Laboratory, Princeton, NJ, United States, (7)NASA/GISS, New York, NY, United States, (8)University of Virginia Main Campus, Charlottesville, VA, United States, (9)Jet Propulsion Laboratory, Pasadena, CA, United States, (10)Barcelona Supercomputing Center (BSC), Barcelona, Spain, (11)JPL, Pasadena, CA, United States, (12)U.S. Geological Survey, Denver, CO, United States, (13)University of Tel Aviv, Tel Aviv, Israel, (14)NASA Headquarters, Washington, DC, United States
Abstract:
The Earth Surface Mineral Dust Source Investigation (EMIT) was selected by NASA in February of 2018. The development has advanced through 2020 with the completion of Critical Design Reviews of the mission, instrument, ground system, and science elements. From the orbit of the International Space Station (ISS), EMIT is designed to acquire high signal-to-noise ratio imaging spectroscopy measurements of the arid land dust source regions of the Earth. These more than 1 billion spectroscopic measurements will be analyzed for surface mineral composition and used to initialize state-of-the-art Earth System Models (ESM) to investigate the effect of mineral dust aerosols on radiative forcing currently and in the future. This paper describes the status and plans for the EMIT mission, instrument, ground system, and science elements. A special focus will be given to the science data system processing that includes calibration, atmospheric correction, mineral mapping, and scaling for ESM initialization. Results from testing on a large precursor Airborne Visible/Infrared Imaging Spectrometer (AVIRIS) data set will be presented. EMIT data products will be delivered to a NASA Land Processes (LP) Distributed Active Archive Center (DAAC) and made available to the full science and user community for modeling studies and the many additional investigations they enable.
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