Paper: 'Summer temperatures were about 10°C warmer than today, even though the concentration of atmospheric CO2 was similar'

jai mitchell says:
June 21, 2013 at 1:36 pm
Stephen Richards. . .
for your viewing pleasure. . .enjoy 🙂
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Pluck that video clip off the WUWT popup ads. Did you jai?
Thanks anyway for giving me a clearer understanding about how your mind works which is great because now I dont need to read your comments.

Mark Hladik says:
June 21, 2013 at 5:34 pm
Desert Yote: point taken; however, the synchonity of glacial pulses/initiation was not simultaneous within or between the hemispheres. That is all I was trying to point out.
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I guess I read more into your comment then intended. I totally agree with your point. In fact, the variations in the timings of glacial events is one of the reasons that make the redefinition of the base of the Pleistocene to coincide with the base of the Gelasian such good idea. Now if we could just get rid of that Holocene monstrosity!

If you log into FB, the link works.

or all three.

@michel..
ouch !! because its true !!
worrying about climate change is not an issue…….
the next burger… much more so !!!

FAO the unavailable Jai (Alias) Mitchell.
Basque pelota. A ball bounced off a walled space.
I guess that explains your environMENTALism. Whacked in the head.
http://en.wikipedia.org/wiki/Jai_alai

Chris @NJSnowFan [June 21, 2013 at 1:17 pm] says:
“One impact from a large meteorite, comet or asteroid in the right placement can change our seasons”

Sparks [June 21, 2013 at 2:06 pm] says:
“I wouldn’t think asteroid strikes would change the axis of the planet by very much in relation to the potential devastation they could cause anyway, but we share our solar system with other large bodies that are constantly interacting with the earth and frequently perturbing its orbit and there is a natural precession of the solar system as a whole at play, these factors can change earths orbit and axis even at an incredibly small rate that are only noticeable over long periods of time.”

I think you’re right about a “typical” asteroid, however there are apparently much bigger things. For example, whatever smacked into Uranus seriously affected it’s axial tilt and the consequences were enormous …

Uranus has an axial tilt of 97.77 degrees, so its axis of rotation is approximately parallel with the plane of the Solar System. This gives it seasonal changes completely unlike those of the other major planets. Other planets can be visualized to rotate like tilted spinning tops on the plane of the Solar System, while Uranus rotates more like a tilted rolling ball. Near the time of Uranian solstices, one pole faces the Sun continuously while the other pole faces away. Only a narrow strip around the equator experiences a rapid day-night cycle, but with the Sun very low over the horizon as in the Earth’s polar regions. At the other side of Uranus’s orbit the orientation of the poles towards the Sun is reversed. Each pole gets around 42 years of continuous sunlight, followed by 42 years of darkness.[47] Near the time of the equinoxes, the Sun faces the equator of Uranus giving a period of day-night cycles similar to those seen on most of the other planets. Uranus reached its most recent equinox on December 7, 2007.[48][49]

Northern hemisphere ---- Year ----- Southern hemisphere
 Winter solstice .... 1902, 1986 ... Summer solstice
 Vernal equinox ..... 1923, 2007 ... Autumnal equinox
 Summer solstice .... 1944, 2028 ... Winter solstice
 Autumnal equinox ... 1965, 2049 ... Vernal equinox

One result of this axis orientation is that, on average during the year, the polar regions of Uranus receive a greater energy input from the Sun than its equatorial regions. Nevertheless, Uranus is hotter at its equator than at its poles. The underlying mechanism which causes this is unknown. The reason for Uranus’s unusual axial tilt is also not known with certainty, but the usual speculation is that during the formation of the Solar System, an Earth-sized protoplanet collided with Uranus, causing the skewed orientation.[50] Uranus’s south pole was pointed almost directly at the Sun at the time of Voyager 2’s flyby in 1986. The labeling of this pole as “south” uses the definition currently endorsed by the International Astronomical Union, namely that the north pole of a planet or satellite shall be the pole which points above the invariable plane of the Solar System, regardless of the direction the planet is spinning.[51][52] A different convention is sometimes used, in which a body’s north and south poles are defined according to the right-hand rule in relation to the direction of rotation.[53] In terms of this latter coordinate system it was Uranus’s north pole which was in sunlight in 1986.

In the game of cosmic billiards there are certain shots that can ruin your entire day ( and lengthen it substantially :-).