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you're looking at the caldor fire which

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broke out just south of grizzly flats

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california and burned from august 15th

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to october 6 2021.

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with upwards of two dozen earth

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observing satellites detecting and

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tracking fires is an important part of

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nasa's purview

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but this visualization gives us a

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detailed look at the past

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nasa's latest generation of fire

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tracking satellites observes the entire

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planet twice per day

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scientists use the thermal infrared

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images from each overpass to identify

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the active firefront as well as track

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the behavior of large fires

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it's really important for us to be able

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to track fires as they change over time

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because the rate of spread the intensity

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and the total area that burns all

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contribute to the impact from fires on

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ecosystems communities air quality and

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greenhouse gas concentrations in the

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atmosphere

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the yellow outlines you see represent

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the active fire lines

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where the brightest shade of yellow

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shows the location of the current active

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fire lines the gold lines show the

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position of the fire lines as they were

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12 24 and 36 hours earlier

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the red dots indicate active fire

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detections and the gray sections

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the caldor fire started in the middle of

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august and burned for almost eight weeks

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but we know that most of the expansion

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happened in just the first two weeks

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after which point most of the active

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fire detections were not at the

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perimeter of the fire as expanding

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firefronts but actually within the

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perimeter showing areas where there was

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the latest generation of satellites are

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a partnership between nasa and noaa

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these new instruments have higher

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spatial resolution that helps them

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better detect fires

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this also allows scientists to better

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locate the areas of actively burning

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fire and to be more sensitive to areas

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of smaller fire activity including some

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of the smoldering fire activity that

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would not have been detected by previous

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satellites from nasa or other agencies

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[Music]

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here we can see the dixie fire located

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better geolocation also allows

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scientists and fire managers to be more

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confident about where the fire is

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actually located on the ground

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[Music]

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overall the goal for our team is to be

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able to deliver active fire detection

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and tracking information in a way that

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helps link nasa's satellite capabilities

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with the needs of stakeholders on the

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ground these stakeholders include fire

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managers who track and respond to fires

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in real time

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and air quality managers responsible for

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forecasting and reporting how fire

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emissions create unhealthy air quality

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for communities downwind from large fire

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events

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these data also help support new science

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by tracking the fire every 12 hours we

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can better pinpoint the conditions under

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which dangerous fires could occur

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and better anticipate the likely impact