Methane Source Finder: A web-based data portal for exploring methane data
Abstract
The Methane Source Finder is a web-based data portal developed under NASA's CMS and ACCESS programs for exploring methane data in the state of California. This open access interactive map allows users to discover, analyze, and download data across a range of spatial scales derived from remote-sensing, surface monitoring, and bottom-up infrastructure information. This includes methane plume images and associated emission estimates derived from the 2016-2018 California Methane Survey using the airborne imaging spectrometer AVIRIS-NG. The fine spatial resolution (typically 3 m) AVIRIS-NG products when combined with the Vista infrastructure database of over 270,000 components statewide permits direct attribution of emissions to individual point source locations. These point source products have benefited from evaluation and feedback from state and local agencies and private sector companies and in some cases were used to directly guide leak detection and repair efforts. Additional data layers at local and regional scales provide context for point source emissions. These include methane flux inversions for the Los Angeles basin derived from surface observations and tracer transport modeling (3 km, 4 day resolution) as well as the CMS US methane gridded inventory (10 km, monthly resolution) over the state of California. Future plans include expanding the data portal beyond California and incorporating regional scale flux inversions derived from satellite observations. Methane Source Finder supports methane research (e.g., multi-scale synthesis), enables facility-scale mitigation, and improves public awareness of greenhouse gas emissions.
Figure caption: Methane Source Finder results for the Los Angeles Basin include locations of methane plume images (blue circles), point source emission estimates, gridded methane flux maps, and facility/infrastructure data layers.- Publication:
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AGU Fall Meeting Abstracts
- Pub Date:
- December 2019
- Bibcode:
- 2019AGUFM.B13F2426T
- Keywords:
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- 0428 Carbon cycling;
- BIOGEOSCIENCES;
- 1615 Biogeochemical cycles;
- processes;
- and modeling;
- GLOBAL CHANGE;
- 6309 Decision making under uncertainty;
- POLICY SCIENCES;
- 6620 Science policy;
- POLICY SCIENCES & PUBLIC ISSUES