🌀 What are these cloud vortices observed above antarctica?

From space, a satellite has captured a strange spectacle: clouds spiraling in perfect patterns above Antarctica. These aerial formations resemble giant fingerprints on the icy expanse. A rare meteorological phenomenon, whose beauty is only revealed from orbital heights.

These swirling structures are called "von Kármán vortex streets." They occur when strong winds encounter a large obstacle, such as a mountain or volcano. The air flows around the obstacle and begins to undulate, creating alternating spirals that stretch for miles (kilometers). In this case, the winds were blowing at more than 34 mph (55 km/h).


The obstacle responsible for this display is Peter I Island, an uninhabited volcano off the Antarctic coast. This volcano rises more than 5,300 feet (1,615 meters) above sea level. It is surrounded by the icy waters of the Bellingshausen Sea in the Southern Ocean. Its recent eruptions indicate that volcanic activity is still ongoing.

The image was taken by NASA's Landsat 8 satellite, using its Operational Land Imager (OLI) instrument. Launched in 2013, this satellite is part of a long series of Earth observation missions that began in 1972.

These images of cloud vortices are not just aesthetic: they help scientists better understand the interactions between winds and terrain. Data collected by the Landsat missions also assist farmers in managing their crops and researchers in tracking the effects of climate change.