![Hier klicken, um den Treffer aus der Auswahl zu entfernen](images/unchecked.gif) |
Titel |
Observation of water in Saturn with Herschel: probing Saturn's 2011 storm |
VerfasserIn |
T. Cavalie, P. Hartogh, H. Feuchtgruber, E. Lellouch, C. Jarchow, R. Moreno, G. Orton |
Konferenz |
EGU General Assembly 2012
|
Medientyp |
Artikel
|
Sprache |
Englisch
|
Digitales Dokument |
PDF |
Erschienen |
In: GRA - Volume 14 (2012) |
Datensatznummer |
250068105
|
|
|
|
Zusammenfassung |
Saturn’s usually slowly evolutive seasonal cycle has been disrupted in December 2010
between 20Ë N and 50Ë N by the outbreak of an unexpected planetary-scale storm system.
First Cassini/CIRS and ground-based observations have shown that temperatures, winds and
chemistry have been rapidly affected by the storm in the stratosphere. Subsidence of warmer
stratospheric air around the initial vortex at 1 mbar caused a dramatic increase in the infrared
emission. Initially, a 16 K difference between these warm stratospheric regions,
referred to as “beacons”, and the cool central vortex was reported. Data taken in
May 2011 by Cassini/CIRS show that the “beacons” have merged into a single hot
spot. The temperature at 1 mbar had reached 190 K over a wide region according
Cassini/CIRS.
In this paper, we will present observations of water in Saturn carried out with the
Herschel Space Observatory during the storm, in July 2011. These observations
will be analyzed and differences in terms of temperature and/or water abundance
between the beacon region and the rest of the planetary disk will be evaluated. |
|
|
|
|
|