Trace Species Identified in Saturn's Northern Storm Region

Details Trace Species Identified in Saturn's Northern Storm Region Trace Species Identified in Saturn's Northern Storm Region

Oct 2011

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2011epsc.conf.1241b&link_type=abstract

EPSC-DPS Joint Meeting 2011, held 2-7 October 2011 in Nantes, France. http://meetings.copernicus.org/epsc-dps2011, p.1241

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Scientific paper

The massive storm at 40 N on Saturn that began in December 2010 has produced significant and lasting effects in the northern hemisphere on temperature and species abundances [1]. The northern storm region was observed at 0.5 cm-1 spectral resolution in March 2011 by Cassini's Composite Infrared Spectrometer (CIRS). Temperatures in the stratosphere as high as 190 K were derived from CIRS spectra in warm regions referred to as "beacons". Other longitudes exhibit cold temperatures in the upper troposphere. These unusual conditions allow us to identify rare species such as C4H2, C3H4, and CO2 in the stratosphere, as well as to measure changes in the abundance of phosphine (PH3) in the troposphere. Phosphine is a disequilibrium species whose abundance is a tracer of upwelling from the deep atmosphere.

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