Do you still think Mars is heating up because of increased solar output?

Question

"These dirty and clean layers were created by ages of intense dust storms followed by icy eras. This five-million-year-long cycle was likely driven by wobbles in Mars' tilt and fluctuations in the shape of its orbit around the sun. The more sunlight the red planet saw because of these changes, the more the polar icecaps retreated and the more dust storms Mars saw."

"All this layering is key evidence for theoretical models that predict that changes in Mars' climate are coupled with orbital changes," said researcher Roger Phillips, a geophysicist at Southwest Research Institute in Boulder."

http://news.yahoo.com/s/space/20080515/sc_space/brrrmarscolderthanexpected;_ylt=Atj.hoCQ5J0VhF7tWzEzNHEDW7oF

Answer 1

The changes in Mars climate is caused by orbital changes.  That's probably one of the contributing factors in the Earth's climate change as well.

The Martian atmosphere is over 95% co2.  That's around 320,000% greater than the amount of co2 here on Earth and yet that planet is even colder than orginally estimated.

This should prove there is no relationship between co2 and temperature.

Answer 2

No, I know it's not.

a) Solar output has not increased on average in 30 years.

b) We don't even know for sure that Mars is warming on a global scale.

c) If it is, it's due to dust storms darkening its surface.

Answer 3

Planets do not move forever in the same perfect elliptical orbits.  Although the force of gravity from the sun is dominant, gravitational perturbations from other planets impose periodic variations on planetary orbits that modulate the amount of solar radiation received.  The evidence cited shows that the effect of orbital changes is amplified by a change in albedo.  Dust storms effectively thicken the thin Martian atmosphere, as well as contribute to a reduction in surface albedo.  

Contrary to statements by Jello above, the Martian atmosphere contains about 30X (rather than 3200X quoted) as much CO2 as the Earth's atmosphere per unit area.  The same laws of physics apply on Mars as on Earth:  Mars has a larger CO2 greenhouse effect.  Mars has negligible atmospheric H2O and a negligible greenhouse effect from H2O.  The paper cited indicates that Mars produces less heat than the Earth at the poles from volcanism.  Jello is using incorrect data taken out of context to support incorrect conclusions.

Answer 4

I'm waiting for the surprise...? I don't live there so, I've only mention it once. It was pretty much the same thing you posted, only I got bad critiques from the proponents.

Answer 5

I am not concerned with what happens on Mars, maybe one I will be but not today.

Answer 6

This question is in the wrong category. This site is for global climate change questions on EARTH.

Not planning to live on Mars anytime soon ....

Answer 7

Never did. That was a climate denier myth.