30 May '11, 10pm

Cloud Wakes from Juan Fernandez Islands: Acquired April 29, 2011, this natural-color image shows wakes create...

Two small islands produced big effects in the atmosphere off of Chile in late April 2011. The Moderate Resolution Imaging Spectroradiometer (MODIS) on NASA’s Aqua satellite captured this natural-color image of the Juan Fernandez Islands on April 29. Isla Alejandro Selkirk and Isla Robinson Crusoe are both volcanic islands arising from an east-west submarine ridge. The islands are barely visible in this image, but their effects on nearby clouds are obvious. Poking up from the ocean surface, the islands create obstacles to air movement, such that wind blowing over each island creates a giant V shape of cloud-free air, with the island at the base. Isla Alejandro Selkirk appears to simply interrupt the regional cloud pattern, which resumes north of the island. But the effects of Isla Robinson Crusoe appear more complex. Close to the island, the clouds look similar lenticular c...

Full article: http://earthobservatory.nasa.gov/IOTD/view.php?id=50718&s...

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Cloud Wakes from Juan Fernandez Islands: Acquir...

earthobservatory.nasa.gov 31 May '11, 4am

Two small islands produced big effects in the atmosphere off of Chile in late April 2011. The Moderate Resolution Imaging ...

#Typhoon Songda : Image of the Day: via @addthis

earthobservatory.nasa.gov 29 May '11, 2pm

Super Typhoon Songda swirled off the coast of Luzon, at the northern end of the Philippine Islands, on the afternoon of Ma...