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UCSB geologist discovers pattern in Earth's long-term climate record
University of California - Santa Barbara ^
| Apr 6, 2010
| Unknown
Posted on 04/06/2010 10:49:31 AM PDT by decimon
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To: PapaBear3625
21
posted on
04/06/2010 12:08:45 PM PDT
by
numberonepal
(Don't Even Think About Treading On Me)
To: decimon
The soon to be unemployed researcher: Dr. Lorraine Lisiecki
22
posted on
04/06/2010 12:09:46 PM PDT
by
Reeses
(All is vanity)
To: decimon
She would have had to recalculate the Milankovitch Cycle impacts to get the cycles or the Eccentricity of the Orbit to match up. [She might have though].
The two yellow lines on this chart are the Milankovitch Cycles - summer solar insolation at 75N and the less variable one is the temperature impact from the Eccentricity of the orbit - the more circular it is, the more solar energy received by the Earth in total - they are not in sync at all.
To: decimon; Ernest_at_the_Beach; Fred Nerks; 75thOVI; aimhigh; Alice in Wonderland; AndrewC; ...
24
posted on
04/06/2010 3:25:31 PM PDT
by
SunkenCiv
("Fools learn from experience. I prefer to learn from the experience of others." -- Otto von Bismarck)
She discovered that the largest glacial cycles occurred during the weakest changes in the eccentricity of Earth's orbit -- and vice versa. She found that the stronger changes in the Earth's orbit correlated to weaker changes in climate. "This may mean that the Earth's climate has internal instability in addition to sensitivity to changes in the orbit," said Lisiecki.
IOW, she has run into the same problems as everyone else who has attempted to devise a uniformitarian model for "cycles" in the "ice ages".
[Rod Serling voice] Imagine if you will a path for the Earth in which it remains so cold during the summers (not just a few summers, but thousands of them) that the snow just accumulates, and yet the oceans continue to be warm enough to continue the hydrologic cycle and the snow continues to fall. You'll have to imagine it, because it literally can't happen, outside of the Land of the Midnight Sun Twilight Zone.
Antarctica is the dryest of the continents, the least precipitation, and I think also has the highest elevation -- and less than three million years ago supported temperate plant species. The Eltanin impact happened about two million years ago. Not a coincidence.
25
posted on
04/06/2010 3:32:55 PM PDT
by
SunkenCiv
("Fools learn from experience. I prefer to learn from the experience of others." -- Otto von Bismarck)
To: decimon
She concludes that the pattern of climate change over the past million years likely involves complicated interactions between different parts of the climate system, as well as three different orbital systems. The first two orbital systems are the orbit's eccentricity, and tilt. The third is "precession," or a change in the orientation of the rotation axis. . . . and the forth complicated interaction between different parts of the system is:
26
posted on
04/06/2010 4:13:25 PM PDT
by
skeptoid
To: decimon
Well there.
Maybe now we can get some local 5-day forecasts that are worth a damn.
27
posted on
04/06/2010 4:33:31 PM PDT
by
ROCKLOBSTER
(Republicans...the REAL civil rights party.)
To: ROCKLOBSTER
Maybe now we can get some local 5-day forecasts that are worth a damn.They're not eccentric enough for you?
28
posted on
04/06/2010 4:42:37 PM PDT
by
decimon
To: DBrow
To: decimon; JustDoItAlways; SunkenCiv
ping...someone smarter than me needs to read this
To: AEMILIUS PAULUS
31
posted on
04/06/2010 6:31:01 PM PDT
by
DBrow
To: AEMILIUS PAULUS
She cited it as a reference
To: I got the rope
Hey, thanks! D/Led that one right away!
33
posted on
04/06/2010 7:05:08 PM PDT
by
SunkenCiv
("Fools learn from experience. I prefer to learn from the experience of others." -- Otto von Bismarck)
To: ssaftler
34
posted on
04/06/2010 7:05:16 PM PDT
by
SunkenCiv
("Fools learn from experience. I prefer to learn from the experience of others." -- Otto von Bismarck)
To: decimon
Well, I could have told her that.
35
posted on
04/06/2010 7:35:18 PM PDT
by
gigster
To: mbarker12474; SunkenCiv; All
Cycles probably exist, but we also have to consider catastrophes like megavolcanos and boloid strikes. Are any of them cyclic too?
To: Minn
Daughter blames mother for global warming
By Dr. Paul Donohue
SPECIAL TO THE POST-DISPATCH
01/27/2010
Dear Dr. Donohue - My daughter complains that I flatulate more often than most individuals. Furthermore, she claims that the gas an individual passes contributes to global warming. I don’t know if I am physically able to keep my gas to myself to go green. Is my daughter really right?
37
posted on
04/08/2010 5:09:20 AM PDT
by
mbarker12474
(If thine enemy offend thee, give his childe a drum.)
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