On Oct 4, 4:14 pm, leonard7...@gmail.com wrote:
> On Oct 3, 4:37 pm, Whata Fool  wrote:
>
>
>
>
>
> > sleepalot  wrote:
> > >On Oct 2, 1:32 pm, "tadams...@yahoo.com"  wrote:
> > >> You see, that observation is based on the ice core data, the GHG and
> > >> temperature measurements from the ice cores.  But, if you accept those
> > >> measurements then you have accepted overwhelming evidence that GHGs
> > >> have played a big role in driving climate.
>
> > >Temperature _measurements_ from ice cores?
> > >You mean that they take an ice core and stick a thermometer
> > >in it at numerous points along its length, and take those measurements
> > >to be the historic suface temperatures?
>
> >          Of course, that is the way the present "ever in recorded history"
> > measurements are made, it guarantees this is the warmest year ever.
>
> >           Seriously though, it isn't much worse than including observation
> > stations in far eastern Europe that closed down prior to 1990, as they
> > usually had average temperatures 10 to 15 degrees below most of
> > the rest of the world,
>
> The historical records show that the period between the
> switch from interglacial interludes and the return of
> glaciation is about 20 short years.
>
> Moreover, as the earth proceeds through that 20 year
> period, all hell breaks loose, with each year getting worse
> and more violent than the previous one. Mother Nature
> appears to go more and more berserk each year and by
> the time that glaciation begins to set in Mother earth and
> its inhabitants- us - are devastated - if still alive - to say
> the least.
>
> Do I have your attention now?
>
> Dr. George Kukla is a member of the Czechoslovakian
> Academy of Sciences and a pioneer in the field of
> astronomical forcing. In the early 1960s, Dr.Kukla and
> Julius Fink examined glacial loess deposits and found
> evidence of ten ice ages in the samples. Later, in 1977, the
> journal Quaternary Research published their findings in
> an article "Pleistocene Climates in Central Europe: At
> least 17 Interglacials after the Olduvai Event."
>
> Now comes the Financial Post's Lawrence Solomon with
> a piece "Forget Warming - beware the next new ice age,"
> in which he discusses Dr. Kukla's warnings harking back
> to the 1970s and his present contentions. Solomon himself
> is executive director of Urban Renaissance Institute and
> Consumer Policy Institute, divisions of Energy Probe
> Research Foundation. He has recently written about and
> identified many scientists who deny the claims of Al Gore
> and his chums who claim falsely that all reputable
> scientists say the science is settled and that's it!
>
> Before I cite Solomon's article I want to dispel any
> questions skeptics might have about Dr. Kukla and
> his solid credentials. According Solomon, Dr. Kukla
> is a micropalentologist and Special Research
> Scientist at the Lamont-Doherty Earth Observatory
> of Columbia University, and is a pioneer in the study
> of solar forcing of climate changes. He was the lead
> author of the scientific paper that first supported
> Milutin Milankovic's theory of glacial cycles by
> investigating the stratigraphy in deep-sea sediment
> cores from the southern Indian Ocean. In the cores
> were clear imprints of Milankovic's proposed cycles.
> In his paper he wrote, "We are certain now that
> changes in the Earth's orbital geometry caused the
> ice ages. The evidence is so strong that other
> explanations must now be discarded or modified." Prior
> to joining Columbia in 1971, he had published landmark
> studies in Czechoslovakia, where he was a member of
> the Czechoslovakian Academy of Sciences.
>
> O.K. Here's what Dr. Kukla says now. He maintains that
> the record clearly shows that global warming always
> precedes an ice age. That makes the current period of
> global warming a mere blip that constitutes additional
> indication of the ice age to come.
>
> He insists that the fundamental issue here could not be
> more clear: For millions of years, the geologic record
> shows, Earth has experienced an ongoing cycle of ice
> ages, each typically lasting about 100,000 years, and
> each punctuated by briefer, warmer periods called
> interglacials, such as the one we are now in. This
> ongoing cycle closely matches cyclic variations in
> Earth's orbit around the sun.
>
> "I feel we're on pretty solid ground in interpreting orbit
> around the sun as the primary driving force behind
> ice-age glaciation. The relationship is just too clear and
> consistent to allow reasonable doubt," Dr. Kukla said.
> "It's either that, or climate drives orbit, and that just
> doesn't make sense."
>
> In 1997 I wrote about the 20 year period between
> interglacial periods and glaciation. I quoted paleologist-
> pollen specialist Genevieve Woillard as writing in a 1979
> Nature article about that period. She wrote that the only
> real question remaining is how long it will take for the
> glaciation process to set in.
>
> Woillard reported on her studies of pollen samples in a
> lake bottom in South Vosges, France. She wrote that at
> the start of a number of past glacial periods, the
> vegetation changed from temperate zone trees to
> subarctic needle-bearing trees in a period of 150 years
> plus or minus 75 years. The change was one of gradual
> deterioration until the last 20 years. During that final
> score of years, the type of vegetation completely changed.
>
> What her studies, and those of other paleoclimatologists
> who have examined past ice ages show, is that the
> transition between interglacial and glacial periods is one
> of increasing violence -- more volcanic eruptions, storms,
> earthquakes and other natural disasters.
>
> To sum up, here are a few facts - that's facts, not the
> computer models (guesses) that pass for evidence in the
> global warming community:
>
> For at least the past five million years, the earth has
> experienced ice ages lasting 90,000 years or so, followed
> by interglacial periods like the present one that last about
> 12,000 years.
>
> The last ice age ended 12,000 years ago.
>
> Every time the atmospheric levels of CO2 have exceeded
> 300 ppms an ice age has occurred. Those levels now
> exceed 400 ppms.
>
> The transition period between ice ages and temperate
> climates is about 20 years and that period is one of
> increasing violence.
>
> Galciation is an acceleration of the normal process of
> using evaporated water to carry heat energy from the
> warm zones to cold zones. The effect of an increase in
> atmospheric greenhouse gases such as water vapor - the
> real greenhouse gas - is to increase cloud cover over polar
> latitudes. The clouds have a cooling effect as well as
> providing the snow for glaciation. The energy is dissipated
> in arctic space. Spring and Fall seasons get shorter and
> shorter until all that's left is winter.
>
> The former government scientist Dr. George Kaplan, the
> real historian of the global warming/global cooling
> dispute, wrote in 1997:
>
> "Has the warming theory 'campaign' been the last stand
> of an arrant scientific ideology?" he asked "Such a
> hypothesis can be acceptable to some, but the obvious
> failing of the theory in the face of global catastrophe
> argues for a more substantial motivation.
>
> "It would pay to investigate this motivation further to
> consider whether politics has been responsive to poor
> science or whether economics and politics have made
> false tools out of science for narrow interest.
>
> "If the latter is true the manipulation and subversion of
> the truth seeking apparatus by political and private
> interests is, in the present situation, of such extreme
> malevolence that it ranks as the greatest malfeasance
> in history."- Hide quoted text -
>
> - Show quoted text -

Ice age is a vague term.  By one definition an ice age is when we have
at least one persistent polar cap.  By that definition we are in an
ice age now.

I was refering to the recent glacial maximums which are 100,000 years
or more apart.