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NASA satellite captures U.S. 'Big Chill'

Date:
February 2, 2011
Source:
NASA/Jet Propulsion Laboratory
Summary:
The current winter storm system blasting much of the United States is depicted in a new NASA satellite image from the Atmospheric Infrared Sounder (AIRS) instrument on NASA's Aqua satellite.

This composite infrared image of the continental United States was taken by the Atmospheric Infrared Sounder (AIRS) instrument on NASA's Aqua spacecraft on Feb. 1, 2011.
Credit: NASA/JPL-Caltech

The current winter storm system blasting much of the United States is depicted in this new NASA satellite image from the Atmospheric Infrared Sounder (AIRS) instrument on NASA's Aqua satellite.

The image, a composite of AIRS data swaths taken on Feb. 1, 2011, highlights the preponderance of cold air blanketing Canada and the northern U.S. The coldest air is depicted in purples, blues and greens.

AIRS was built and is managed by NASA's Jet Propulsion Laboratory, Pasadena, Calif.

The AIRS data create an accurate 3-D map of atmospheric temperature, water vapor and clouds, data that are useful to forecasters. The image shows the temperature of the storm's cloud tops or the surface of Earth in cloud-free regions. The coldest cloud-top temperatures appear in purple, indicating towering cold clouds and heavy precipitation. The infrared signal of AIRS does not penetrate through clouds. Where there are no clouds, AIRS reads the infrared signal from the surface of the ocean waters, revealing warmer temperatures in orange and red.

AIRS observes and records the global daily distribution of temperature, water vapor, clouds and several atmospheric gases including ozone, methane and carbon monoxide. For more on AIRS, see http://airs.jpl.nasa.gov/.


Story Source:

The above story is based on materials provided by NASA/Jet Propulsion Laboratory. Note: Materials may be edited for content and length.


Cite This Page:

NASA/Jet Propulsion Laboratory. "NASA satellite captures U.S. 'Big Chill'." ScienceDaily. ScienceDaily, 2 February 2011. <www.sciencedaily.com/releases/2011/02/110202002549.htm>.
NASA/Jet Propulsion Laboratory. (2011, February 2). NASA satellite captures U.S. 'Big Chill'. ScienceDaily. Retrieved July 25, 2014 from www.sciencedaily.com/releases/2011/02/110202002549.htm
NASA/Jet Propulsion Laboratory. "NASA satellite captures U.S. 'Big Chill'." ScienceDaily. www.sciencedaily.com/releases/2011/02/110202002549.htm (accessed July 25, 2014).

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