Earth ID: 5088

Tracking the Spread of the Caldor and Dixie Fires

Visualizations by Cindy Starr Released on June 12, 2023

This visualization shows the spread of the Caldor and the Dixie fires in California during the summer of 2021, updated every 12 hours from a new fire detection and tracking approach based on near-real time active fire detections from the VIIRS sensor on the Suomi-NPP satellite.

Complete transcript available.

This visualization highlights data from a new fire detection and tracking approach (Chen et al., 2022) based on near-real time active fire detections from the VIIRS sensor on the Suomi-NPP satellite. Every 12 hours, the fire tracking algorithm uses new active fire detections to update the total fire perimeter and estimate the position of active fire lines where the fire may continue to spread. This approach provides a detailed perspective on the behavior of the Caldor and Dixie fires, identifying periods of rapid fire expansion and active fire detections within the perimeter from continued flaming and smoldering behind the active fire fronts.

The visualization shows the progression over time as the fire spreads. The yellow outlines track the position of the active fire lines every 12 hours for the last 60 hours, with the latest location of the fire front shown in the brightest shade of yellow. The red points show the location of active fire detections within the perimeter, while the grey region shows the estimated total area burned. The graph shows the cumulative burned area in square kilometers.

This image shows the extent of the Caldor fire on August 21, 2021. The yellow outlines track the position of the active fire lines for the last 60 hours, with the latest location of the fire front in the brightest shade of yellow. The red points show the location of active fire detections, while the grey region shows the estimated total area burned. The graph shows the cumulative burned area in square kilometers.

This image shows the spread of the Caldor fire between August 15 and October 6, 2021, with the fire line for each 12-hour time step shown in a different color.

This image shows the extent of the Dixie fire on July 31, 2021. The yellow outlines track the position of the active fire lines for the last 60 hours, with the latest location of the fire front in the brightest shade of yellow. The red points show the location of active fire detections, while the grey region shows the estimated total area burned. The graph shows the cumulative burned area in square kilometers.

This image shows the spread of the Dixie fire between July 14 and October 22, 2021, with the fire line for each 12-hour step in time shown in a different color.

Perimeters of Dixie and Caldor wildfires located in California. The extent of the Dixie wildfire is as of October 22, 2021, while the extent of the Caldor wildfire is as of October 6, 2021. The dropdown menu offers multiple resolutions for a 16:9 aspect ratio.

Source Material

Alternate Version

Visualization Credits

Technical Support:
Ian Jones (ADNET Systems, Inc.)
Laurence Schuler (ADNET Systems, Inc.)

Visualizers:
Kel Elkins (USRA)
Michala Garrison (SSAI)
Greg Shirah (NASA/GSFC)
Horace Mitchell (NASA/GSFC)
Andrew J Christensen (SSAI)
Alex Kekesi (Global Science and Technology, Inc.)

Lead Visualizer:
Cindy Starr (Global Science and Technology, Inc.)

Lead Scientist:
Doug C. Morton (NASA/GSFC)

Please give credit for this item to:
NASA's Scientific Visualization Studio

Science Paper:
Chen, Y., Hantson, S., Andela, N. et al. California wildfire spread derived using VIIRS satellite observations and an object-based tracking system. Sci Data 9, 249 (2022). https://doi.org/10.1038/s41597-022-01343-0

Short URL to share this page:
https://svs.gsfc.nasa.gov/5088

Data Used:

SRTM/SIR-C/DEM

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Landsat-8/OLI/TIRS/Band Combination 4-3-2

Observed Data - USGS - 07/11/2021

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Suomi-NPP/VIIRS/California Wildfire Spread Derived using VIIRS Observations and an Object-based Tracking System also referred to as: California Wildfire Spread Derived using VIIRS Observations and an Object-based Tracking System

08/15/2021 - 10/06/2021

https://springernature.figshare.com/collections/A_Dataset_of_California_Wildfire_Spread_Derived_Using_VIIRS_Observations_and_an_Object-based_Tracking_System/5601537/1

Credit:
Chen, Yang; Hantson, Stijn; Andela, Niels; Coffield, Shane; Graff, Casey; Morton, Douglas C.; et al. (2022): A Dataset of California Wildfire Spread Derived Using VIIRS Observations and an Object-based Tracking System. figshare. Collection. https://doi.org/10.6084/m9.figshare.c.5601537.v1

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Keywords:
SVS >> Fire Management
DLESE >> Human geography
DLESE >> Natural hazards
GCMD >> Earth Science >> Human Dimensions >> Natural Hazards >> Fires
SVS >> Hyperwall
SVS >> Biosphere >> Ecological Dynamics >> Fire Occurrence
NASA Science >> Earth
GCMD >> Earth Science >> Human Dimensions >> Environmental Governance/management >> Fire Management

GCMD keywords can be found on the Internet with the following citation: Olsen, L.M., G. Major, K. Shein, J. Scialdone, S. Ritz, T. Stevens, M. Morahan, A. Aleman, R. Vogel, S. Leicester, H. Weir, M. Meaux, S. Grebas, C.Solomon, M. Holland, T. Northcutt, R. A. Restrepo, R. Bilodeau, 2013. NASA/Global Change Master Directory (GCMD) Earth Science Keywords. Version 8.0.0.0.0