Eaton Fire Ash Mapping and Analysis: Field Spectroscopy

Dataset Contents This dataset was created to better understand the devastating Eaton Fire of January 2025. The fire contaminated a large area across Altadena, Pasadena, and Sierra Madre California with hazardous ash and soot. To improve both the response and recovery to this event, members of the NASA Jet Propulsion Laboratory, California Institute of Technology, the University of California, Los Angeles, and the California Institute of Technology collected and analyzed ash samples taken in and near the Eaton Fire burn scar. This dataset includes handheld spectroscopy measurements for 87 ash samples as well as documentation, metadata, and code examples. An interactive version of these spectra is available online: https://ecosis.org/package/eaton-fire-ash-mapping-and-analysis--field-spectroscopy Funding Acknowledgements This research was funded by multiple organizations. Part of the research was carried out at the Jet Propulsion Laboratory, California Institute of Technology, under a contract with the National Aeronautics and Space Administration (80NM0018D0004). The Caltech contribution was funded by Caltech’s Division of Geological and Planetary Sciences. A portion of this field spectroscopy work was supported by the NASA FireSense program.