Comments on: Milankovitch on Mars?

By: James Mayeau

James Mayeau — Thu, 20 Sep 2007 20:04:49 +0000

Couldn’t be retrived online but here is the abstract:
Work on climatic changes of Mars is reviewed and related to terrestrial problems. In particular the dust storms of Mars are discussed since these represent the only global climatic change which has been scientifically observed. The channels of Mars have provoked studies of climatic change and these are summarized together with polar laminae as a climatic change indicator.
http://ntrs.nasa.gov/search.jsp?R=31134&id=10&qs=No%3D40%26N%3D4294958487
Authors: Toon, O. B.; Sagan, C.; Gierasch, P. J.; Pollack, J. B.
Couple famous luminaries.

By: James Mayeau

James Mayeau — Thu, 20 Sep 2007 20:01:28 +0000

How long has Mars climate been warming?
Here’s a paper from Jan 1975, titled Climatic change on Mars and Earth.

By: Luke

Luke — Mon, 17 Sep 2007 21:38:48 +0000

Has it? How long has Mars been warming?

By: James Mayeau

James Mayeau — Mon, 17 Sep 2007 18:07:19 +0000

SJT, I have no doubt about how Mars and Earth managed to heat up and freeze down at the same time. The only thing I wonder at is how a person such as yourself will grasp at any idea that “proves” mankind a plague on the planet.
Why is that?

By: SJT

SJT — Mon, 17 Sep 2007 10:59:52 +0000

James, don’t you know how it works yet? Any position is worth holding, as long as it doesn’t agree with Anthropogenic Global Warming.

By: James Mayeau

James Mayeau — Mon, 17 Sep 2007 09:53:18 +0000

Well since this is my schickt. Mars and Earth have both gone through the last 100,000 years of ice age and worm periods together, concurrently, in unison, hand in hand, as if their were some larger force that controls the thermostat for our solar system. Milankovitch be damned.

By: Luke

Luke — Mon, 17 Sep 2007 09:42:07 +0000

OK PP the point is a bit short but he’s right in that there’s no rapid change that adds up to be forcing change in the 100-200 year sense. Is there?

Mars I’m not sure – different planet – different orbit. Someone might tell us how often Mars varies its orbit and how. In terms of eccentricity, obliquity, and precession.

By: Pirate Pete

Pirate Pete — Mon, 17 Sep 2007 08:09:02 +0000

SJT, what an idiotic statement to make that “At the moment, Milanchovic is not a factor on earth”.

The variations in the earth’s orbit, which together make up what is referred to as the Milankovic cycles are always in operation. The eccentricity, axial tilt, and precession of the Earth’s orbit are always changing the level and distribution of insolation on the earth’s surface. Sometimes they act against each other, at other times they act together. The total effect of the three variations repeats itself about every 100,000 years, which is referred to as the Milankovic cycles.

The variation in effect on the earth’s surface is further compounded by the difference in distribution of the continents between the northern and southern hemispheres.

Go away and study basic astrophysics 101.

By: SJT

SJT — Mon, 17 Sep 2007 07:00:35 +0000

Yes. What is his point? At the moment, Milankovich is not a factor on Earth.