Day 4/100: Maps for decisions 🔥

Aug 2019: 1M acres burned across Bolivia-Paraguay-Brazil.

Landsat 8 dNBR: pre/mid/post-fire scenes, TOA correction, NBR differencing, classification.
988,069 acres total. Max continuous: 638,673 acres (~491K football fields).

ArcGIS ModelBuilder + Python automation. Four severity classes for recovery planning.

Not every map needs beauty. Some need accuracy + speed.

#GIS #Landsat8 #RemoteSensing #FireMapping #BurnSeverity #100DayMapChallenge

Identification Of Geothermal Anomalies From Landsat Derived Land Surface Temperature, Mount Meager Volcanic Complex, British Columbia, Canada
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https://doi.org/10.1016/j.rse.2025.114649 <-- shared paper
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“Highlights:
• A novel method for detecting geothermal components from solar energy dominated LST.
• Using LST time series to eliminate temporal variant solar energy input.
• Uncertainty in anomaly identification quantified by probability measure.
• Capable of revealing LST anomalies caused by geothermal, anthropogenic and surface processes..."
#GIS #spatial #mapping #britishcolumbia #BC #solar #geothermal #remotesensing #earthobservation #LST #spatialanalysis #spatiotemporal #naturalresources #volcanic #geology #geostatistics #landsurfacetemperature #satellite #geothermalheatflux #GHF #energybalance #calculation #model #MountMeager #Landsat #landsat8 #hotspring #landslide #massmovement #engineeringgeology #spring #seep #anthropogenic #HEP #hydropower #monitoring #risk #hazard
Greater Los Angeles Wildfires - January 2025 | U.S. Geological Survey

Landsat Plumbs the (Shallow) Depths

Researchers have developed a new way to measure near-shore bathymetry using satellite observations alone.

Marvelous Lenticularis

Rugged terrain on New Zealand’s South Island gives rise to a distinctive lenticular cloud formation, known locally as the Taieri Pet.

End of an era: Historic Landsat 7 mission takes final images | U.S. Geological Survey

RESTON, Va. — After more than 132,000 trips around the Earth and more than 3.3 million satellite images under its belt, the work of the Landsat 7 satellite is complete, even as the Landsat science mission continues with newer satellites.

Svalbard Crisis: Glaciers Melt at Unprecedented Rates As Temperatures Soar

High summer temperatures caused record melting of the Norwegian archipelago’s glaciers. Summer 2024 saw Svalbard's ice caps melt at record levels, driven by high air temperatures and further exacerbated by a persistent heat dome over Scandinavia. This led to historical temperature highs and signi

SciTechDaily
File:Park Fire and its burn scar, California, USA - August 4th, 2024 (53903253065).jpg - Wikimedia Commons

New report ranks USGS assets high among Earth observations systems surveyed | U.S. Geological Survey

The United States Group on Earth Observations, also known as USGEO, recently released its 2023 Earth Observation Assessment (EOA) report focused on agriculture and forestry. 

Thomsen River Estuary, Banks Island

Sea ice and waterways along the north side of Canada’s high-Arctic island reveal compelling patterns when viewed from above.