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Universal Fire Shape and Whirls

Listed in NASA Earthdata CMR

Explore the basis of the universal fire shape as well as twirl and burst behavior.

Description

In this wildfire simulation, as the fire spreads, it evolves into a shape well-known to fire managers. The "head" is the leading edge of the fire where the heat is focused.

Along the side are two "flanks", where the winds blow parallel to the edge of the fire. The "Back" is the slowest moving part of the fire and creeps against the wind. In addition, an animation of the vertical vorticity (rotation of air) shows the presence of fire whirls.

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Wildfires can contain fire whirls of greatly varied intensity, duration and size - from a few meters in diameter, to where the entire smoke-filled updraft (perhaps 1 km wide) is rotating. Most are small, but they have been known to break off trees more than a meter in diameter.

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Topics

Stated by source
Fire Dynamics · Not provided · Wildfires
Inferred from text
Ecological applications 70% · Simulation 75%
Provenance · 1 source records, 11 field assertions
SourceKeyLast seenRaw
NASA Earthdata CMRC1214613951-SCIOPS15 d agoJSON v1
FieldAssertionExtractorEvidence
access_levelsource · NASA CMRconnector:nasa_cmr@1.0.0
concepts[field].anzsrc:group:4102enrichment · NASA CMRtaxonomy-embedding@1.1.0title+keywords+description (70%)
concepts[measured_variable].gcmd:earth-science/biosphere/ecological-dynamics/fire-ecology/fire-dynamicssource · NASA CMRconnector:nasa_cmr@1.0.0
concepts[measured_variable].gcmd:earth-science/human-dimensions/natural-hazards/wildfiressource · NASA CMRconnector:nasa_cmr@1.0.0
concepts[method].local:method:simulationenrichment · NASA CMRkeyword-concept-rules@1.0.0title+description (75%)
concepts[platform].gcmd_platform:not-providedsource · NASA CMRconnector:nasa_cmr@1.0.0
descriptionsource · NASA CMRconnector:nasa_cmr@1.0.0/umm/Abstract
license_textsource · NASA CMRconnector:nasa_cmr@1.0.0
temporalsource · NASA CMRconnector:nasa_cmr@1.0.0/umm/TemporalExtents
titlesource · NASA CMRconnector:nasa_cmr@1.0.0/umm/EntryTitle
version_labelsource · NASA CMRconnector:nasa_cmr@1.0.0