Details

Autor(en) / Beteiligte

• Fletcher, Leigh N.
• Hesman, Brigette E.
• Irwin, Patrick G. J.
• Baines, Kevin H.
• Momary, Thomas W.
• Sanchez-Lavega, Agustin
• Flasar, F. Michael
• Read, Peter L.
• Orton, Glenn S.
• Simon-Miller, Amy
• Hueso, Ricardo
• Bjoraker, Gordon L.
• Mamoutkine, Andrei
• Rio-Gaztelurrutia, Teresa del
• Gomez, Jose M.
• Buratti, Bonnie
• Clark, Roger N.
• Nicholson, Philip D.
• Sotin, Christophe

Titel

Thermal Structure and Dynamics of Saturn's Northern Springtime Disturbance

Ist Teil von

• Science (American Association for the Advancement of Science), 2011-06, Vol.332 (6036), p.1413-1417

Ort / Verlag

Washington, DC: American Association for the Advancement of Science

Erscheinungsjahr

2011

Link zum Volltext

Quelle

Science Online_科学在线

Beschreibungen/Notizen

• 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.