Space-based remote imaging spectroscopy of the Aliso Canyon CH_4 superemitter
Abstract
The Aliso Canyon gas storage facility near Porter Ranch, California, produced a large accidental CH_4 release from October 2015 to February 2016. The Hyperion imaging spectrometer on board the EO-1 satellite successfully detected this event, achieving the first orbital attribution of CH_4 to a single anthropogenic superemitter. Hyperion measured shortwave infrared signatures of CH_4 near 2.3 μm at 0.01 μm spectral resolution and 30 m spatial resolution. It detected the plume on three overpasses, mapping its magnitude and morphology. These orbital observations were consistent with measurements by airborne instruments. We evaluate Hyperion instrument performance, draw implications for future orbital instruments, and extrapolate the potential for a global survey of CH_4 superemitters.
Additional Information
© 2016 American Geophysical Union. Received 25 APR 2016; Accepted 23 MAY 2016; Accepted article online 28 MAY 2016; Published online 20 JUN 2016. We Acknowledge support from the NASA Earth Science Division and the program for Rapid Response and Novel Research in Earth Sciences. AVIRIS-C data are available from http://aviris.jpl.nasa.gov. AVIRIS-NG data are available from http://avirisng.jpl.nasa.gov. Hyperion data are available from http://earthexplorer.usgs.gov. We thank Stuart Frye of Goddard Space Flight Center who played a central role in acquiring the Hyperion observations. We acknowledge and thank the AVIRIS-C flight team, including Sarah Lundeen, Ian McCubbin, and Charles Sarture. We also thank scientists at JPL and elsewhere whose counsel was invaluable throughout the system design process: Andrew Aubrey, Lance Christensen, Dar A. Roberts, and Brian Bue. AVIRIS-C is sponsored by the NASA Earth Science Division. A portion of the research described in this paper was performed by the Jet Propulsion Laboratory, California Institute of Technology, under a contract with the National Aeronautics and Space Administration. Copyright 2016. All rights reserved. Government sponsorship acknowledged. We acknowledge and thank Stephen Conley, University of California Davis.Attached Files
Published - Thompson_et_al-2016-Geophysical_Research_Letters.pdf
Supplemental Material - grl54528-sup-0001-supplementary.doc
Supplemental Material - grl54528-sup-0002-s01.csv
Supplemental Material - grl54528-sup-0003-s02.csv
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Additional details
- Eprint ID
- 69084
- Resolver ID
- CaltechAUTHORS:20160718-090351925
- NASA/JPL/Caltech
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2016-07-27Created from EPrint's datestamp field
- Updated
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2021-11-11Created from EPrint's last_modified field
- Caltech groups
- Division of Geological and Planetary Sciences