Methane and Carbon Dioxide Point Source Measurements Across Six Continents from the EMIT Imaging Spectrometer on the International Space Station and Contributions to the U. S. Greenhouse Gas Center

The Earth Surface Mineral Dust Source Investigation (EMIT) imaging spectrometer was launched to the International Space Station on the 14^th of July 2022. In order to measure key dust source minerals, the EMIT visible to short wavelength infrared (VSWIR) imaging spectrometer includes the spectral range from 2000 to 2500 nm that contains key atmospheric absorptions of methane and carbon dioxide greenhouse gases. This instrument has a high signal-to-noise ratio, excellent calibration, 80 km swath, and 60 m spatial sampling. Following early demonstration of the sensitivity of EMIT to methane and carbon dioxide point source emitters, NASA and the U.S. Greenhouse Gas (GHG) Center have supported the mapping, analysis, and reporting of EMIT observed GHG plumes and plume complexes across six continents. To date more than 500 plume complexes have been identified and shared publicly, in keeping with NASA’s open science commitment. Here, we provide an overview of EMIT GHG measurement capability and point source observations to date, as well as plans for future observations and product generation in support of NASA and the U.S. GHG Center. These efforts support detection, reporting, and enabling the mitigation of GHGs that drive climate change.