![](https://webarchive.library.unt.edu/eot2008/20090831170148im_/http://veimages.gsfc.nasa.gov//9558/a000838_gal.jpg)
Images & Animations
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Credit
NASA/Goddard Space Flight Center Scientific Visualization Studio
Chlorine Nitrate over the Arctic from CLAES (2/12/93 - 3/16/93)
Key to understanding the chlorine chemistry in the polar stratosphere is the measurement of polar stratospheric clouds, chlorine monoxide, and the reservoir gas chlorine nitrate. Chlorine nitrate has been measured by the Cryogen Limb Array Etalon Spectrometer, CLAES. CLAES makes measurements by looking at infrared emission from cloud particles and trace gases. CLAES measurements help to show that the polar stratospheric clouds which form in the cold Arctic stratosphere have converted most of the chlorine nitrate into the radical chlorine monoxide. In 1992, UARS measurements showed conclusively that an an Arctic ozone hole is beginning to form.
Chlorine monoxide over the arctic as measured by CLAES from 2/12/93 to 3/16/93
Metadata
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Sensor
UARS/CLAES -
Animation ID
838 -
Video ID
SVS1999-1001 -
Start Timecode
1:39:44:00 -
End Timecode
1:40:31:00 -
Animator
Jesse Allen -
Studio
SVS -
Visualization Date
1999/04/09 -
Scientist
Mark Schoeberl (NASA/GSFC) -
Keywords
Ozone, Chlorine Nitrate -
DLESE Subject
Atmospheric science, Environmental science -
Data Date
1993/2/12-1993/3/16 -
Story URL
stories/UARS/index.html -
Animation Type
Regular