Earth Imaging Journal: Remote Sensing, Satellite Images, Satellite Imagery
Breaking News
Leica BLK3D Recognised by Prestigious Global Awards for Innovation, Engineering, Design
(HEERBRUGG, SWITZERLAND, 23 January 2019) Leica Geosystems, part of...
4Subsea and Ashtead Technology Enter Strategic Partnership
Aberdeen and Asker, January 23rd 2019 – Under the...
Himalayan Glacier Feeds Ganges River
The Copernicus Sentinel-2 mission takes us over Gangotri, one...
Virtual Surveyor 6.2 Now Processes Larger Drone Survey Projects
LEUVEN, Belgium, 22 January 2019 – Virtual Surveyor drone...
Microlight3D Launches Altraspin™, a New Generation 3D-Printer for High-Resolution Micro-Parts
Grenoble, France, January 22, 2019 – Microlight3D, a specialty...

Click on image to enlarge.

This astronaut photograph illustrates the formation of wave clouds in the wake, or downwind side, of Île aux Cochons, often called Pig Island, in the southern Indian Ocean. The island’s summit elevation is high enough to interact with cloud layers and flowing winds. Once air masses pass over the summit, they descend and may encounter alternating moist and dry air layers, enabling the formation of the discontinuous, chevron-shaped wave clouds.

The island is located approximately 3,000 kilometers (1,900 miles) southeast of South Africa. In this view from the International Space Station, only a part of the eastern coastline is visible.

The island is volcanic in origin and has a summit elevation of 775 meters (2,543 feet) above sea level. The island’s stratovolcano is thought to have erupted within the past 12,000 years; however, no historical activity has been recorded.

In this image, two cloud layers are visible. The lower, more uniform layer consists of roughly parallel “cloud streets” that suggest the winds blowing out of the west. When air masses run into the summit of Île aux Cochons, moisture-laden air rises and cools, causing water vapor to condense into clouds.

Read the full story.

Comments are closed.