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Von Karman Vortex Streets

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Antarctic Vortex Streets: Spirals Form Behind Peter I Island
earth-science19 days ago

Antarctic Vortex Streets: Spirals Form Behind Peter I Island

NASA's Earth Observatory highlights a Landsat 8 image showing von Kármán vortex streets forming downwind of remote Peter I Island in the Bellingshausen Sea, created by Antarctic winds that bend around the island; the spiraling cloud patterns reveal atmospheric eddies around the ice-cloaked volcano, and the piece also notes the island's discovery in 1821, its shield-like summit crater, and past reconnaissance like Operation IceBridge in 2011.

Alaska's Winter Fades Under a Parade of Cloud Streets
science26 days ago

Alaska's Winter Fades Under a Parade of Cloud Streets

NASA's Earth Observatory image from March 19, 2026 captures a dramatic mix of cloud formations off the Gulf of Alaska—cloud streets formed by cold Arctic air over warmer water, evolving into open-cell clouds, plus von Kármán vortex streets and a polar low with tropical-storm–force winds—illustrating the turbulent transition from winter to spring as Arctic air interacts with the Gulf's ocean heat.