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China Dust

Bright green swirls in a NASA satellite picture released this week represent a six-mile-high (almost ten-kilometer-high) dust plume from China moving among clouds (seen as columns of dark blue capped with red) over the United States.

The dust originated in April in China’s Taklimakan and Gobi deserts. Over ten days, the NASA satellite CALIPSO (Cloud-Aerosol Lidar and Infrared Pathfinder Satellite Observations) tracked the dust as it moved across the Pacific Ocean, through Canada and the United States, and over the eastern state of Virginia.

“This transport of dust out of China happens every spring, but we rarely see it move this far with such intensity,” NASA scientist Raymond Rogers said in a press release.

Published May 19, 2010 ( week’s best space picture)