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Date of Image(s):<\/SPAN><\/P>

1/11/2025<\/SPAN><\/P>

Date of Next Image:<\/SPAN><\/P>

1/16/2025<\/SPAN><\/P>

Summary:<\/SPAN><\/P>

This product visualizes three dominant principal components derived from the surface reflectance estimates from airborne imaging spectroscopy measurements taken by NASA JPL\u2019s AVIRIS-3. The image visualizes the relative strength of three dominant eigenvectors, estimated from data across the full scene. Eigenvectors from this high (284) dimensional dataset do not specifically identify physical features but are correlated to physical phenomena; similar to how \u2018red\u2019, \u2018green\u2019, or \u2018blue\u2019 in a traditional image are correlated to, but not directly indicative of, specific physical processes. Instead of just \u201cred,\u201d \u201cgreen,\u201d and \u201cblue,\u201d this analysis considers 284 unique \u201ccolors\u201d in the visible to shortwave infrared spectrum, providing a much more robust depiction of spectral differences. Thus, contrast between different colored regions in this image can be used to infer strong differences in surface type, and the fire boundary at the time of image collection is readily apparent. Explained another way, within a given scene, burned structures will share a unique spectral reflectance signature in \u201c284-color-space\u201d compared to other surfaces and display as the same color in the PCA image.<\/SPAN><\/P>

The product ground spatial resolution is approximately 2.8 m, and flights occurred between 19:40 and 21:00 UTC on Jan 11th 2025. Raw data are available for download here: https://popo.jpl.nasa.gov/pub/LA_Fires/dist/eaton_pca_20250111.tif, https://popo.jpl.nasa.gov/pub/LA_Fires/dist/palisades_pca_20250111.tif<\/SPAN><\/P>

POC:<\/SPAN><\/P>

Philip G. Brodrick (JPL) and David R. Thompson (JPL)<\/SPAN><\/P>

Citation:<\/SPAN><\/P>

AVIRIS-3 Radiance Data:<\/SPAN><\/P>

Eckert, R., D.R. Thompson, A.M. Chlus, J.W. Chapman, M. Eastwood, M. Bernas, S. Geier, M. Helmlinger, D. Keymeulen, E. Liggett, S. Nadgauda, L.M. Rios, L.A. Shaw, W. Olson-Duvall, P.G. Brodrick, and R.O. Green. 2024. AVIRIS-3 L1B Calibrated Radiance, Facility Instrument Collection. ORNL DAAC, Oak Ridge, Tennessee, USA. https://doi.org/10.3334/ORNLDAAC/2356<\/SPAN><\/P>

AVIRIS-3 Reflectance Data:<\/SPAN><\/P>

Brodrick, P.G., A.M. Chlus, U.N. Bohn, E. Greenberg, J. Montgomery, J.W. Chapman, M. Eastwood, S.R. Lundeen, R. Eckert, W. Olson-Duvall, D.R. Thompson, and R.O. Green. 2025. AVIRIS-3 L2A Orthocorrected Surface Reflectance, Facility Instrument Collection. ORNL DAAC, Oak Ridge, Tennessee, USA. https://doi.org/10.3334/ORNLDAAC/2357<\/SPAN><\/P><\/DIV><\/DIV><\/DIV>", "mapName": "pca", "description": "Date of Image(s):1/11/2025Date of Next Image:1/16/2025Summary:This product visualizes three dominant principal components derived from the surface reflectance estimates from airborne imaging spectroscopy measurements taken by NASA JPL\u2019s AVIRIS-3. The image visualizes the relative strength of three dominant eigenvectors, estimated from data across the full scene. Eigenvectors from this high (284) dimensional dataset do not specifically identify physical features but are correlated to physical phenomena; similar to how \u2018red\u2019, \u2018green\u2019, or \u2018blue\u2019 in a traditional image are correlated to, but not directly indicative of, specific physical processes. Instead of just \u201cred,\u201d \u201cgreen,\u201d and \u201cblue,\u201d this analysis considers 284 unique \u201ccolors\u201d in the visible to shortwave infrared spectrum, providing a much more robust depiction of spectral differences. Thus, contrast between different colored regions in this image can be used to infer strong differences in surface type, and the fire boundary at the time of image collection is readily apparent. Explained another way, within a given scene, burned structures will share a unique spectral reflectance signature in \u201c284-color-space\u201d compared to other surfaces and display as the same color in the PCA image.The product ground spatial resolution is approximately 2.8 m, and flights occurred between 19:40 and 21:00 UTC on Jan 11th 2025. Raw data are available for download here: https://popo.jpl.nasa.gov/pub/LA_Fires/dist/eaton_pca_20250111.tif, https://popo.jpl.nasa.gov/pub/LA_Fires/dist/palisades_pca_20250111.tifPOC:Philip G. Brodrick (JPL) and David R. Thompson (JPL)Citation:AVIRIS-3 Radiance Data:Eckert, R., D.R. Thompson, A.M. Chlus, J.W. Chapman, M. Eastwood, M. Bernas, S. Geier, M. Helmlinger, D. Keymeulen, E. Liggett, S. Nadgauda, L.M. Rios, L.A. Shaw, W. Olson-Duvall, P.G. Brodrick, and R.O. Green. 2024. AVIRIS-3 L1B Calibrated Radiance, Facility Instrument Collection. ORNL DAAC, Oak Ridge, Tennessee, USA. https://doi.org/10.3334/ORNLDAAC/2356AVIRIS-3 Reflectance Data:Brodrick, P.G., A.M. Chlus, U.N. Bohn, E. Greenberg, J. Montgomery, J.W. Chapman, M. Eastwood, S.R. Lundeen, R. Eckert, W. Olson-Duvall, D.R. Thompson, and R.O. Green. 2025. AVIRIS-3 L2A Orthocorrected Surface Reflectance, Facility Instrument Collection. ORNL DAAC, Oak Ridge, Tennessee, USA. https://doi.org/10.3334/ORNLDAAC/2357", "copyrightText": "Philip G. Brodrick (JPL) and David R. 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