Earth Imaging Journal: Remote Sensing, Satellite Images, Satellite Imagery
Breaking News
The Hong Kong Institute of Surveyors Annual Conference 2021 Explores the new reality of surveying industry
HONG KONG SAR - The Hong Kong Institute of...
Open Maps For Europe releases first datasets
Users can now access the first free-to-use maps via...
BlackSky Hires Business Development Leader as Chief Revenue Officer
HERNDON, Va.- BlackSky Technology Inc. (“BlackSky”), a leading technology...
Fortem DroneHunter Successfully Defeats Drone Threats in US Army Test
PLEASANT GROVE, Utah - Fortem Technologies, leaders in airspace...
Belam and Cepton Establish Partnership to Enable Safety at High-traffic Railway Level Crossings
SAN JOSE, Calif.- Cepton, a Silicon Valley-based innovator of...

Click on image to enlarge.

On Sept. 19, 2012, NASA’s Terra satellite collected views of the Three Sisters and Broken Top volcanoes in the Cascade Mountains near Bend, Ore. The accompanying image comprises an eclectic mix of cirrus clouds, glaciers and the Pole Creek Fire, which blazed nearby in the Deschutes National Forest.

Vegetated areas appear bright red; snow and ice looks white; and clouds are a wispier off-white. Exposed rock and barren land near the summits of the mountains are shades of brown. Smoke billowing from the fire appears gray.
The smoke is transparent to the Terra ASTER sensor’s thermal band because smoke plumes consist of ash particles and other combustion products so fine they’re easily penetrated by the relatively long wavelengths of thermal infrared radiation. In contrast, ASTER can’t see through clouds because they tend to have larger particles that thermal infrared radiation can’t easily pass through.

Image courtesy of NASA.

Read the full story.

Comments are closed.