NASA’s Jet Propulsion Laboratory is providing the instrument that will enable a non-profit organisation called Carbon Mapper to pinpoint and measure methane and carbon dioxide (CO2) point-sources from space. The data collected by the instrument will help to find “super-emitters”—the small percentage of individual sources that are responsible for a significant fraction of global emissions of methane and carbon dioxide.
“JPL is excited to be pioneering this research effort, which will provide critical information about greenhouse gases and the future of Earth’s climate,” said James Graf, director for the Earth Science and Technology Directorate at JPL. “This effort is the first time we have partnered on a space mission with a consortium of non-profit organizations, universities, and the State of California.”
The first Carbon Mapper satellite is hoped to launch in 2023 and JPL will provide a state-of-the-art imaging spectrometer. JPL has been developing imaging spectrometers since the 1980s for NASA, and in the last few years, the laboratory has used these imagers deployed on airplanes to measure atmospheric gases, including methane in California and the Four Corners region of the US. JPL imaging spectrometers will also be aboard upcoming missions to the Moon and Jupiter’s moon Europa.
A methane plume detected by NASA’s AVIRIS-NG in summer 2020 indicates a leaking gas line in oil field in California. The operator subsequently confirmed and repaired the leak. Credit: NASA/JPL-Caltech
The Carbon Mapper’s Earth-orbiting imaging spectrometer will have a pixel size of about 30 m square. Other imaging spectrometers currently in orbit have larger pixel sizes, making it hard to pinpoint the locations of sources that may not be visible on the ground, such as cracks in natural gas pipelines. “With such high-resolution images, there is no question where greenhouse gas plumes originate. This technology enables researchers to identify, study, and quantify the strong gas emission sources,” said JPL scientist Charles Miller, who has spent decades studying methane around the world.
JPL’s research in methane quantification from spectroscopy, funded by NASA’s Earth science division, is also helping Carbon Mapper to address a second challenge: making its data on emissions accessible to all interested users in industry, government and the private sector. Carbon Mapper will have an open data portal making its findings available quickly and continuously, speeding disaster responses and the repair of faulty industrial equipment.
“This decade represents an all-hands-on-deck moment for humanity to make critical progress in addressing climate change”, said Riley Duren, Carbon Mapper’s chief executive officer and a research scientist at the University of Arizona in Tucson. “Our mission is to help fill gaps in the emerging global ecosystem of methane and CO2 monitoring systems by delivering data that are timely, actionable and accessible for science-based decision making.”
