The gas giant Jupiter is a whopping 452 million miles away from Earth and more than 11 times bigger, but is similar in at least one way. Some of the geophysical forces behind the enormous planet\u2019s infamous storms behave similarly to those on Earth. New research indicates that the roiling storms at the planet\u2019s polar regions are powered by processes that are known to physicists studying the Earth\u2019s atmosphere and ocean. The findings are described in a study published June 6 in the journal Nature Physics and offers a new way of understanding similar meteorological processes home on Earth. Storms of JupiterLia Siegelman, a physical oceanographer at the University of San Diego\u2019s Scripps Institution of Oceanography, first saw this connection in 2018. She noticed some similarities between ocean turbulence on Earth and images of some of Jupiter\u2019s huge cyclones. According to Siegelman, air and water are both considered fluids in physics, so applying ocean physical dynamics to a gas giant like Jupiter is not quite as out of this world as it may seem.\u201cJupiter is basically an ocean of gas,\u201d Siegelman said in a statement. In 2022, Siegleman and her team published a study based on this initial observation. They analyzed high-resolution infrared images of Jupiter\u2019s cyclones taken by NASA\u2019s Juno spacecraft and found a type of convection similar to what occurs on Earth helps maintain Jupiter\u2019s storms. These maelstroms can be thousands of miles wide and last for years. The planet\u2019s signature Great Red Spot has been raging for more than 300 years. This initial study focused on Jupiter\u2019s cyclones, the team was also intrigued by the wispy tendrils or filaments in between the cyclone\u2019s gassy vortices. Fronts and filamentsIn the new study, the team focused on these filaments. They found these wispy tendrils between Jupiter\u2019s cyclones work together with convection to promote and sustain Jupiter\u2019s giant storms. Specifically, the filaments somewhat resemble what oceanographers and meteorologists call fronts\u2013a boundary between gas or liquid masses with different densities due to differences in various properties like temperature. On Earth, these are the \u201cwarm fronts\u201d or \u201ccold fronts\u201d that are mentioned in weather forecasts nearly every day. One of a front\u2019s key features is that their leading edge has strong vertical velocities that can generate winds or currents. To better understand the role of the filaments between cyclones on Jupiter, Siegelman worked with co-author Patrice Klein of NASA\u2019s Jet Propulsion Laboratory, California Institute of Technology, and the Ecole Normale Superieure. They looked at a series of infrared images of Jupiter\u2019s north polar region that were taken in 30-second increments by Juno. The infrared camera aboard the spacecraft allowed the team to calculate the temperature, as the bright areas of the image were warmer and the darker areas were cooler. On Jupiter, hotter parts of the atmosphere corresponded to thinner clouds. Colder parts represent thicker cloud cover that blocks out more of the heat emanating from the planet\u2019s extremely hot core. The team then tracked the movement of clouds and filaments across the 30 second intervals and calculated the horizontal wind speeds. They calculated the vertical wind speeds and saw that the filaments do actually behave similarly to fronts on Earth. The vertical wind speeds located at the edges of fronts on Jupiter meant that the fronts were involved in transporting energy\u2013in the form of heat\u2013from the planet\u2019s hot interior to its upper atmosphere. This fuels the giant cyclones. While convection is the main driver, the fronts power about 25 percent of Jupiter\u2019s cyclones and 40 percent of the planet\u2019s vertical heat transport. \u201cThese cyclones on Jupiter\u2019s poles have persisted since they were first observed in 2016,\u201d said Siegelman. \u201cThese filaments in between the large vortices are relatively small but they are an important mechanism for sustaining the cyclones. It\u2019s fascinating that fronts and convection are present and influential on Earth and Jupiter\u2013it suggests that these processes may also be present on other turbulent fluid bodies in the universe.\u201d Better connections Jupiter\u2019s massive scale and the high-resolution imagery from Juno can allow for a clearer visualization of the ways that smaller-scale activities like fronts connect to the larger ones like cyclones and the atmosphere at large. These connections are often difficult to observe on Earth, where they are smaller and ephemeral. The new Surface Water and Ocean Topography (SWOT) satellite could also make these kinds of ocean phenomena easier to observe in future studies. \u201cThere is some cosmic beauty in finding out that these physical mechanisms on Earth exist on other far-away planets,\u201d said Siegelman.<\/p>\n","protected":false},"excerpt":{"rendered":"
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