Earth Imaging Journal: Remote Sensing, Satellite Images, Satellite Imagery
Breaking News
USGS-NASA Pecora Award Recognizes Excellence in Earth Observation
A longtime innovator in space-based Earth observation at Boston...
Strategic Noise Mapping for the German Federal Railway Authority
Karlsruhe - Commissioned by the German Federal Railway Authority,...
OGC Seeks Public Comment for Candidate Moving Features Access Standard
The Open Geospatial Consortium (OGC®) seeks public comment on...
TerraColor Australia and New Zealand Landsat 8 Mosaics Released
Earthstar Geographics LLC (San Diego, CA, USA) announced the...
Lucity Welcomes a Partner Program Manager
OVERLAND PARK, KS – Lucity, Inc. is pleased to...

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.