European Space Agency (ESA) Copernicus Sentinel 2 satellite image 17 Aug 2020 (18:49:19 Zulu) Los Vaqueros Reservoir California USA Watershed fire from lightning strike
I penetrated the smoke layer obscuring the visible spectrum by using the default atmospheric penetration mapping of colors and wavelengths in SNAP 7.0.4.
Color Band nano-meters
Red B12 2190
Green B11 1610
Blue B8A 865
The satellite will be flying over us again Saturday morning. I will make a new image like this to see how much the fire has grown. If the wind clears the smoke I am interested in seeing in the visible spectrum the dye marked aerial drops of fire retardant in the watershed because it is high in phosphorus which is the key ingredient in CyanoBacterial Hazardous Algal Blooms (CyanoHABs). This reservoir has a known seasonal algal bloom and is used by my water district to deliver water to the tap in my home. I use the water to drink, cook, clean and bathe. I am posting this to the Sentinel Toolbox Exploitation (STEP) forum because ESA Copernicus is light years ahead of NASA LandSat under Trump and I am grateful ESA shares this technology with us and the world for free.