NASA: Russia - Alaska zone - Cloud Streets over the Bering Sea, 01.08.13
Posted by Ricardo Marcenaro | Posted in 01.08.13 , NASA: Russia - Alaska zone - Cloud Streets over the Bering Sea | Posted on 13:36
acquired April 7, 2013
download large image (11 MB, JPEG, 7400x6000)
In early April 2013, clouds stretched in parallel rows for hundreds of kilometers over the Bering Sea. The Moderate Resolution Imaging Spectroradiometer (MODIS) on NASA’s Terra satellite captured this natural-color image of the phenomenon on April 7, 2013.
The parallel clouds, known as cloud streets, originated along the
edge of the sea ice, which extended southward from the snow-covered
expanses of Russia and Alaska. The location of the cloud formation was
not a coincidence. When cold air blows over ice and snow and encounters
moist air over open water, the meeting of the air masses can cause the
formation of parallel cylinders of spinning air.
Clouds form along the upward cycle in the cylinders, where air is
rising, and skies remain clear along the downward cycle, where air is
falling.
In the north, light cloud cover partially obscured the sea ice, but
its characteristic tendril shapes could still be seen through the
clouds.
Related Reading
- NASA Earth Observatory (2009, February 26) Cloud Streets and von Karman Vortices, Greenland Sea.
- NASA Earth Observatory (2011, February 15) Winter Cloud Streets, North Atlantic.
NASA image courtesy Jeff Schmaltz, LANCE/EOSDIS MODIS Rapid Response Team at NASA GSFC. Caption by Michon Scott.
- Instrument:
- Terra - MODIS
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