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Post by nautonnier on Aug 18, 2013 20:08:44 GMT
Ok..... We know MIS-11 lasted approx 40,000 years. Of course, according to the Milankovitch theory that shouldn't have happened, but it most certainly did. Anyone have any good explanation of why MIS-11 was as long as it was? Hi Sig Yes there are some people 'thinking' about this. Read this paper by Nir Shaviv Cosmic Ray Di usion from the Galactic Spiral Arms, Iron Meteorites, and a possible climatic connection?" We construct a Galactic cosmic ray (CR) di usion model while considering that CR sources
reside predominantly in the Galactic spiral arms. We nd that the CR ux (CRF) reaching the
solar system should periodically increase each crossing of a Galactic spiral arm. We search for this
signal in the CR exposure age record of Iron meteorites and con rm this prediction. We then check
the hypothesis that climate, and in particular the temperature, is a ected by the CRF to the extent
that glaciations can be induced or completely hindered by possible climatic variations. We nd that
although the geological evidence for the occurrence of IAEs in the past Eon is not unequivocal, it
appears to have a nontrivial correlation with the spiral arm crossings|agreeing in period and phase.
Thus, a better timing study of glaciations could either con rm this result as an explanation to the
occurrence of IAEs or refute a CRF climatic connection."and Celestial driver of Phanerozoic climate" Atmospheric levels of CO2 are commonly assumed to be a main driver of global climate. Independent empirical evidence suggests that the galactic cosmic ray flux (CRF) is linked to climate variability. Both drivers are presently discussed in the context of daily to millennial variations, although they should also operate over geological time scales. Here we analyze the reconstructed seawater paleotemperature record for the Phanerozoic (past 545 m.y.), and compare it with the variable CRF reaching Earth and with the
reconstructed partial pressure of atmospheric CO2 (pCO2). We find that at least 66% of the variance in the paleotemperature
trend could be attributed to CRF variations likely due to solar system passages through the spiral arms of the galaxy.
Assuming that the entire residual variance in temperature is due solely to the CO2 greenhouse effect, we propose a tentative
upper limit to the long-term “equilibrium” warming effect of CO2, one which is potentially lower than that based on general
circulation models"You will note that both these are based on Svensmark's GCR hypotheis which appears to have validated at CERN in the CLOUD experiment. |
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Post by sigurdur on Aug 18, 2013 20:21:48 GMT
It does appear that Svensmark's theory has been confirmed. Thanks for the links. Flearider may be on to something here.
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Post by Andrew on Aug 19, 2013 0:04:30 GMT
Most of the people who comment mostly on this board in recent times are demonstrably fairly clueless about scientific ideas. If you cannot even make intelligent comments about something as simple as the influence of water vapour in the atmosphere why do you think you can add to scientific understanding of something that is more or less beyond a human beings ability to know anything about? The strong impression you three give is that you like to make announcements how science has failed and prefer your own home spun ideas based on your own opinions of how things should work where everybody who came before you is a clueless moron compared to your amazingly incredible ability to know better. wow "prefer your own home spun ideas based on your own opinions of how things should work" and how much science has come from people like that ..then again with little or no idea ? until they dove in at the deep end ... i'm sure theres a few .. wait come to think of it past history is littered with them ..does the sun rotate around the earth or is the earth flat ? thought provoking questions and common discussions are but the start to every answer You are proving my point that the people who were able to demonstrate the Earth was not flat or that the earth rotated around the Sun were not clueless fools who were unable to understand simple geometry, or draw the Earth to scale.  bencraven.org.uk/atmosphere.htmlThe thickness of the blue line represents 99.99997% of the Atmosphere up to an altitude of 100km on top of the grey surface of the Earth. Nearly all of the water vapour is contained within the troposphere in an almost invisible layer one 6th the thickness of the blue line and most of the water vapour in the troposphere is much nearer the surface that the top of the troposphere. |
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Post by flearider on Aug 19, 2013 13:04:27 GMT
wow "prefer your own home spun ideas based on your own opinions of how things should work" and how much science has come from people like that ..then again with little or no idea ? until they dove in at the deep end ... i'm sure theres a few .. wait come to think of it past history is littered with them ..does the sun rotate around the earth or is the earth flat ? thought provoking questions and common discussions are but the start to every answer You are proving my point that the people who were able to demonstrate the Earth was not flat or that the earth rotated around the Sun were not clueless fools who were unable to understand simple geometry, or draw the Earth to scale. bencraven.org.uk/atmosphere.htmlThe thickness of the blue line represents 99.99997% of the Atmosphere up to an altitude of 100km on top of the grey surface of the Earth. Nearly all of the water vapour is contained within the troposphere in an almost invisible layer one 6th the thickness of the blue line and most of the water vapour in the troposphere is much nearer the surface that the top of the troposphere. and this has what to do with MIS-11 ? plz take your post to your thread and if anyone wants to look or comment they can .. |
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Post by Andrew on Aug 19, 2013 13:21:00 GMT
You are proving my point that the people who were able to demonstrate the Earth was not flat or that the earth rotated around the Sun were not clueless fools who were unable to understand simple geometry, or draw the Earth to scale. bencraven.org.uk/atmosphere.htmlThe thickness of the blue line represents 99.99997% of the Atmosphere up to an altitude of 100km on top of the grey surface of the Earth. Nearly all of the water vapour is contained within the troposphere in an almost invisible layer one 6th the thickness of the blue line and most of the water vapour in the troposphere is much nearer the surface that the top of the troposphere. and this has what to do with MIS-11 ? plz take your post to your thread and if anyone wants to look or comment they can .. I was answering your point and pointing out to Sig that the comments he made elsewhere (including a comment sent in a pm to me) were invalid. If you want to say something useful about MIS-11 i am not stopping you. |
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Post by flearider on Aug 19, 2013 13:34:24 GMT
after doing a bit of light reading .. hmmm
not all arms are the same some thin some lrg .. atm we seem to be entering a very lrg one and with a path that go's diagonally across it making the journey longer ..hence the longer we are in it the more clouds we get and the cooler we get . with are sun entering a low spell even if it's just 15-30 yrs would this not excelerate the cooling ? so we have a maunders min for the first 15-30 yrs and with the extra cloud forming will this bring on an ice age ?and with it being a lrg arm it could very well be a major ice age ??
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Post by sigurdur on Aug 19, 2013 17:46:38 GMT
after doing a bit of light reading .. hmmm not all arms are the same some thin some lrg .. atm we seem to be entering a very lrg one and with a path that go's diagonally across it making the journey longer ..hence the longer we are in it the more clouds we get and the cooler we get . with are sun entering a low spell even if it's just 15-30 yrs would this not excelerate the cooling ? so we have a maunders min for the first 15-30 yrs and with the extra cloud forming will this bring on an ice age ?and with it being a lrg arm it could very well be a major ice age ?? How long does it look like we will be in this arm? Any idea of where we were during MIS-11? I know nothing in ref to rotation. etc. Must say this is pricking my interest. |
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Post by flearider on Aug 19, 2013 22:00:27 GMT
lol looks like 10-15m yrs ...or more ... The Triassic period fall within the Cenozoic era, this was about 220 million ago. Before this period, the world was very unusual because Scientist believes that about 20 million years before the appearance of the first dinosaurs, the world went through the biggest extinction that ever occurred. Over 89% of all plant and animal species then alive on land and in the sea had all died out
i'm thinking we went thru this space in the 20m yrs before with the 89% death rate ...
so you could say the beginning of the end ... but it still gives us a while to get rdy ... the more ya read the slower it gets ..
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Post by sigurdur on Aug 19, 2013 23:50:05 GMT
I like the slower it gets part..  |
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Post by sigurdur on Dec 20, 2018 23:55:59 GMT
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Post by blustnmtn on Dec 21, 2018 15:54:58 GMT
Interesting thread Sig. Since I’m a late-comer I never saw it. Andrew seems like such a fun guy, wonder why he left the forum! |
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Post by sigurdur on Dec 21, 2018 18:26:28 GMT
Interesting thread Sig. Since I’m a late-comer I never saw it. Andrew seems like such a fun guy, wonder why he left the forum! He tried the best with what he had. Maybe he has on a Yellow Vest today?  |
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