Observed changes in the vertical profile of stratopheric nitrous oxide at Thule, Greenland, February - March 1992

Using a ground-based mm-wave spectrometer, we have observed stratospheric N2O over Thule, Greenland (76.3 N, 68.4 W) during late February and March, 1992. Vertical profiles of mixing ratio ranging from 16 to 50 km were recovered from molecular emission spectra. The profiles of early March show an ab...

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Bibliographic Details
Main Authors: Reeves, John M., Dezafra, Robert L., Shindell, Drew T., Emmons, Louisa K.
Format: Other/Unknown Material
Language:unknown
Published: 1994
Subjects:
GEOPHYSICS
Antarctic
The Antarctic
Greenland
Antarc*
Thule
Online Access:http://hdl.handle.net/2060/19950004619
Description
Summary:Using a ground-based mm-wave spectrometer, we have observed stratospheric N2O over Thule, Greenland (76.3 N, 68.4 W) during late February and March, 1992. Vertical profiles of mixing ratio ranging from 16 to 50 km were recovered from molecular emission spectra. The profiles of early March show an abrupt increase in the lower-stratosphere N2O mixing ratio similar to the spring-to-summer change associated with the break up of the Antarctic polar vortex. This increase is correlated with changes in potential vorticity, air temperature, and ozone mixing ratio.

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