Thermal Structure and Dynamics of Saturn’s Northern Springtime Disturbance

Details Thermal Structure and Dynamics of Saturn’s Northern Springtime Disturbance Thermal Structure and Dynamics of Saturn’s Northern Springtime Disturbance

Jun 2011

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2011sci...332.1413f&link_type=abstract

Science, Volume 332, Issue 6036, pp. 1413- (2011).

Computer Science

3

Scientific paper

Saturn’s slow seasonal evolution was disrupted in 2010-2011 by the eruption of a bright storm in its northern spring hemisphere. Thermal infrared spectroscopy showed that within a month, the resulting planetary-scale disturbance had generated intense perturbations of atmospheric temperatures, winds, and composition between 20° and 50°N over an entire hemisphere (140,000 kilometers). The tropospheric storm cell produced effects that penetrated hundreds of kilometers into Saturn’s stratosphere (to the 1-millibar region). Stratospheric subsidence at the edges of the disturbance produced “beacons” of infrared emission and longitudinal temperature contrasts of 16 kelvin. The disturbance substantially altered atmospheric circulation, transporting material vertically over great distances, modifying stratospheric zonal jets, exciting wave activity and turbulence, and generating a new cold anticyclonic oval in the center of the disturbance at 41°N.

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