PIA01655: Dynamics of Jupiter's Long-lived White Ovals


Dynamics of Jupiter’s Long-lived White Ovals

Caption:

Three sets of observations, each taken one hour apart, illustrate dynamics in this region of Jupiter's turbulent atmosphere. The near-infrared continuum filter (756 nanometers) shows the features of Jupiter's main visible cloud deck. Oval cloud systems of this type are often associated with chaotic cyclonic systems such as the balloon shaped vortex seen here between the well formed ovals. This system is centered near 30 degrees south planetocentric latitude and 100 degrees west longitude and rotates in a clockwise sense about its center. The oval shaped vortices in the upper half of the mosaic are two of the three long-lived White Ovals that formed to the south of the Red Spot in the 1930's and, like the Red Spot, rotate in a counterclockwise sense. The east to west dimension of the leftmost White Oval is 9000 kilometers (km). (The diameter of the Earth is 12,756 km.) The White Ovals drift in longitude relative to one another, and are presently restricting the cyclonic structure.

In the lower right corner, the smaller oval and its accompanying cyclonic system are moving eastward at about 0.4 degrees per day relative to the larger ovals. The interaction between these two cyclonic storm systems is producing high, thick cumulus-like clouds in the southern part of the more northerly trapped system.

North is at the top of this mosaic. The smallest resolved features are tens of kilometers in size. These images were taken on February 19, 1997, at a range of 1.1 million kilometers by the Solid State Imaging (CCD) system aboard NASA's Galileo spacecraft.

Background Info:

The Jet Propulsion Laboratory, Pasadena, CA manages the Galileo mission for NASA's Office of Space Science, Washington, DC.

This image and other images and data received from Galileo are posted on the World Wide Web, on the Galileo mission home page at URL http://galileo.jpl.nasa.gov. Background information and educational context for the images can be found at http://www.jpl.nasa.gov/galileo/sepo .

Cataloging Keywords:

Name Value Additional Values
Target Jupiter Earth
System Jupiter Earth
Target Type Planet Earth
Mission Galileo
Instrument Host Galileo Orbiter
Host Type Orbiter
Instrument Solid-State Imaging (SSI)
Detector
Extra Keywords Atmosphere, Grayscale, Infrared, Movie, Storm
Acquisition Date
Release Date 1999-04-15
Date in Caption 1997-02-19
Image Credit NASA/JPL-Caltech
Source photojournal.jpl.nasa.gov/catalog/PIA01655
Identifier PIA01655