It seems far more likely that volcanic activity and
the natural ice age cycles are causing the current, temporary warming trend.
Not exact matches
The Earth goes through
cycles and cooling (i.e
Ice Age) and warming are
natural cycles.
The
Ice Core data report
natural (pre-human)
cycles of temperature and CO2 that go way above and below anything experienced in human history prior to or during the industrial
age.
(And the average
age of all
ice never got above single digits) Because most of the thickness increases come in the first couple of years, and most old
ice is «old» because it is nearing the end of its
natural cycle (where it thins to zero.)
He's talking about the supposed ~ 60 year
natural cycle over a benign recovery from the little
ice age, as slightly influenced by mankind's emissions.
So, I tend to believe the new results, they confirm what has been shown by several other studies — human - caused CO2 has a large enough effect lasting long enough that it will greatly affect the
natural ice -
age cycling — but I'll listen to Peter, Andre and the others with great interest, and I don't think this is the last word on exactly what CO2 level is needed for exactly what orbital configuration for
ice -
age initiation.
Where is the evidence of some other
natural forcing, like the Milankovich
cycles that controlled the
ice ages (a fine historical example of a dramatic and regular climate
cycle that can be read in the
ice core records taken both in Greenland and in the Antarctic)?
Lots of climate scientists have tried to work out the climate response — the «feedbacks» — from all kinds of different phenomena — El Nino
cycles,
natural variation, volcanic eruptions, the
ice ages..
The global surface temperature increase since about 1860 corresponds to a recovery from the Little
Ice Age, modulated by
natural ocean and atmosphere
cycles, without need for additional forcing by greenhouse gases.
I've been doing research on the topic and I agree that
natural cycles were taking the Earth into an
Ice Age until anthropogenic warming suddenly began to spike the average temperature of the Earth.
What caused the little
ice age if it wasn't a
natural cycle?
In no way can my summary of the research regarding the impact of regional climate change on the Viking civilization and Europe during the Little
Ice Age be used to «prove» the current global warming is due to a
natural cycle.»
The concept of a little
ice age is in itself contentious, with sceptics of human - caused global warming citing it as evidence climate goes through
natural cycles.
0.8 degrees in 140 years is in the
natural range of an interglacial peak, insignificant in an
ice age cycle.
And
natural variability includes recovery from Little
Ice Age and other
cycles in global temperature - and / or error in measurement.
It isn't just (pick one) CO2, nor «solar activity,» nor ENSO, nor PDO, nor AMO, nor oceanic sequestering, nor human activity, nor
natural cycles, nor still coming out of the Little
Ice Age (talk about «lag»!
Co2, coming out of an
ice age, is released from the ocean sink and part of the
natural cycle when coming out of an
ice age.
In preparation for that program and using the results of Figures 4.4 and 4.5 of the report published on the website of The Right Climate Stuff Research Team: http://www.therightclimatestuff.com/BoundingClimateSensitivityForRegDecisions.pdf, I concluded that if one believes there has been no continued
natural warming since 1850 from the approx. 1000 year period
natural climate
cycle that brought us the Roman Warm Period, The Medieval Warm Period and the Little
Ice Age, then the carefully worded IPCC AR5 report claim that most of the global warming since 1950 is due to human causes, is TRUE.
Rather, he argued that they are part of
natural global climate
cycles, particularly the end of the Little
Ice Age: «All this argument is the temperature going up or not, it's absurd,» Bryson continues.
Jose X: Scafettas paper explains very well the influence of the astronomic 3 - body - gravitation
cycles which result in a STEPWISE (flat - steep - flat - steep) form of the climate (60-20-40 year)
cycles also given in a recent paper of Akasofu, S. - I: «On the recovery from the LIttle
Ice Age» in
Natural Science 2 p 1211 - 1224.....
90, John P. Reisman: Funny how those that are most confused about climate change often claim change often claim the kettle is black and while simultaneously... such as it's cooling and we are heading back to an
ice age, or it's warming, but it's
natural cycle...
The fact of previous climate change due to «
natural cycles» is probably the strongest evidence we have that adding the same amount of heat will warm future climate about as much as the warming following the last
Ice Age.