Davin News Server

On 10/30/2024 12:37 PM, R Kym Horsell wrote:
> More diversions.

https://science.nasa.gov/solar-system/planets/neptune/new-study-finds-unexpected-temperature-changes-on-neptune/

The average global temperature on Neptune unexpectedly fluctuated during 
a recent 17-year period, according to a new study published by the 
American Astronomical Society in The Planetary Science Journal.

Researchers, including scientists from NASA, analyzed ground-based 
images of Neptune taken in the mid-infrared range between 2003 and 2020. 
The images reveal Neptune’s stratosphere appears to have cooled between 
2003 and 2009, followed by a dramatic warming of the south pole between 
2018 and 2020. Conversely, upper-tropospheric temperatures didn’t vary 
much except for the south pole, which appeared warmest between 2003 and 
2006.

Scientists had expected seasons would change slowly on Neptune because 
it takes the planet so long to orbit the Sun – 165 years.

https://science.nasa.gov/missions/hubble/hubble-finds-saturns-rings-heating-its-atmosphere/

The discovery: Saturn's vast ring system is heating the giant planet's 
upper atmosphere. The phenomenon has never before been seen in the solar 
system. It's an unexpected interaction between Saturn and its rings that 
potentially could provide a tool for predicting if planets around other 
stars have glorious Saturn-like ring systems, too.

The telltale evidence is an excess of ultraviolet radiation, seen as a 
spectral line of hot hydrogen in Saturn's atmosphere. The bump in 
radiation means that something is contaminating and heating the upper 
atmosphere from the outside.

https://www.europlanet-society.org/planetary-scale-heat-wave-discovered-in-jupiters-atmosphere/

An unexpected ‘heat wave’ of 700 degrees Celsius, extending 130,000 
kilometres (10 Earth diameters) in Jupiter’s atmosphere, has been 
discovered. James O’Donoghue, of the Japanese Aerospace Exploration 
Agency (JAXA), has presented the results this week at the Europlanet 
Science Congress (EPSC) 2022 in Granada.

Jupiter’s atmosphere, famous for its characteristic multicoloured 
vortices, is also unexpectedly hot: in fact, it is hundreds of degrees 
hotter than models predict. Due to its orbital distance millions of 
kilometres from the Sun, the giant planet receives under 4% of the 
amount of sunlight compared to Earth, and its upper atmosphere should 
theoretically be a frigid -70 degrees Celsius. Instead, its cloud tops 
are measured everywhere at over 400 degrees Celsius.

Looking more deeply through their data, Dr O’Donoghue and his team 
discovered the spectacular ‘heat wave’ just below the northern aurora, 
and found that it was travelling towards the equator at a speed of 
thousands of kilometres per hour.

The heat wave was probably triggered by a pulse of enhanced solar wind 
plasma impacting Jupiter’s magnetic field, which boosted auroral heating 
and forced hot gases to expand and spill out towards the equator.

https://www.epw.senate.gov/public/index.cfm/press-releases-all?ID=0DF9B3CD-802A-23AD-4984-5AC0C6D42605

According to National Geographic: "Habibullo Abdussamatov, head of the 
St. Petersburg's Pulkovo Astronomical Observatory in Russia, says the 
Mars data is evidence that the current global warming on Earth is being 
caused by changes in the sun.

‘The long-term increase in solar irradiance is heating both Earth and 
Mars,’ Abdussamatov said."

This scientific research regarding Mars and the Sun, follows another new 
study about the impact of cosmic rays on the Earth’s climate. A release 
from the Danish National Space Center details the latest research from 
scientists from Denmark, Canada and Israel.

"Nir Shaviv of the Hebrew University in Jerusalem, together with Ján 
Veizer of the Ruhr University and the University of Ottawa, link 
[Earth’s temperature] changes to the journey of the Sun and the Earth 
through the Milky Way Galaxy," the release stated.

The leader of Sun-climate research at the Danish National Space Center, 
Henrik Svensmark said, "The past 10 years have seen the reconnaissance 
of a new area of research by a small number of investigators.'"

https://science.nasa.gov/solar-system/planets/mars/mars-may-be-emerging-from-an-ice-age/

NASA's Mars Global Surveyor and Mars Odyssey missions have provided 
evidence of a relatively recent ice age on Mars. In contrast to Earth's 
ice ages, a Martian ice age waxes when the poles warm, and water vapor 
is transported toward lower latitudes. Martian ice ages wane when the 
poles cool and lock water into polar icecaps.

The "pacemakers" of ice ages on Mars appear to be much more extreme than 
the comparable drivers of climate change on Earth. Variations in the 
planet's orbit and tilt produce remarkable changes in the distribution 
of water ice from Polar Regions down to latitudes equivalent to Houston 
or Egypt. Researchers, using NASA spacecraft data and analogies to 
Earth's Antarctic Dry Valleys, report their findings in Thursday's 
edition of the journal Nature.

"Of all the solar system planets, Mars has the climate most like that of 
Earth. Both are sensitive to small changes in orbital parameters," said 
planetary scientist Dr. James Head of Brown University, Providence, 
R.I., lead author of the study. "Now we're seeing that Mars, like Earth, 
is in a period between ice ages," he said.

https://www.sciencedirect.com/science/article/pii/S0019103523004670

Mars will continue to warm as the Sun heats up throughout its lifetime.
•
Mars will reach the melting temperature of water ice, and both CO2 and 
H2O will be mobilized at the surface.
•
Mars could end up with a climate conducive to supporting life.
•
Results show the importance of processes intrinsic to a planet in 
determining the climate and habitability of an exoplanet.

As the solar luminosity continues to increase over the next 6 billion 
years, the Martian surface will heat up to above the melting temperature 
of water ice.