Earth Imaging Journal: Remote Sensing, Satellite Images, Satellite Imagery
Breaking News
EARTHDAY.ORG’s My Future My Voice Youth Ambassadors Receive 2021 Diana Award for their Exceptional Environmental Leadership
WASHINGTON, D.C. -- EARTHDAY.ORG’s My Future My Voice Youth...
Golden Software Improves Plotting Flexibility and Ease of Use in Latest Grapher Software Release
Grapher Beta Also Available   GOLDEN, Colorado, 8 December...
SPH Engineering Introduces UAV-based Remote Water Sampling System
December 8, 2021 (Riga, Latvia) - SPH Engineering introduces...
Woolpert Augments Fleet with 2nd King Air 300, Globally Expands Aerial Acquisition Capabilities
The AWR-certified turboprop aircraft increases the firm’s ability to...
Release of the 2021 Atlas of Canada World Map
For over a century, the Atlas of Canada has...

October 8, 2019
Smoke-Filled Canyons

image

Lightning struck the Kaibab Plateau in Arizona along the northern rim of the Grand Canyon on July 12, 2019, starting a wildfire (the Castle Fire) that would eventually burn more than 19,000 acres. As it was still burning almost a month later, an astronaut onboard the International Space Station shot this photograph of smoke-filled canyons in the region.

During morning and evening hours, dense smoke often settles in low-lying areas and becomes trapped due to temperature inversions—when a layer within the lower atmosphere acts as a lid and prevents vertical mixing of the air. Steep canyon walls act as a horizontal blockade, concentrating the smoke within the deepest parts of the canyon and increasing the strength of the inversion. As the day progresses and temperatures rise, the air will usually begin to mix and the smoke will no longer be confined to the canyon.

As this image shows, without vertical mixing, the smoke from Lookout Canyon travels throughout the extensive system of side canyons, spreading the smoke to different areas near the ground, rather than dispersing upward.

Image Credit: Astronaut photograph provided by the ISS Crew Earth Observations Facility and the Earth Science and Remote Sensing Unit, Johnson Space Center. 

 

Comments are closed.