The ice core record as a continuous record of past climate is, of course, based on the assumption that the ice is all there and none of it ever melted.
The chronology of the Vostok ice core is also supported by a
glaciological model. Southern Ocean temperature variations correlate
with those at Vostok. Also, because photosynthesis transmits seawater
variations to atmospheric O2, the variations in 18O of O2 in air trapped
in the Vostok ice roughly coincide with variations in 18O of seawater
reflected in the isotopic content of the forams in deep-sea sediments.
There is also a correlation between the Vostok dust concentration and
the record of mass accumulation rate in a core taken from the Indian
the temperature reconstruction is accurate it means the Earth was not
covered in ice 20-30,000 years ago, but in fact warmer than it is today
and cooling rapidly. The sea level was higher than it is today, not
lower. It means the Earth has been in a cooling phase for at least
50,000 years, and will probably continue for another 100,000 years.
There’s no danger of an ice age popping in now,” says Penn State
glaciologist Richard Alley. “I believe that most people studying this
field think that, without any human intervention,…a new ice age should
arrive 20,000 years into the future.”
Global sea level and Earth’s climate are closely linked. Using
speleothem encrustations from coastal caves on the island of
Mallorca, we determined that western
Mediterranean relative sea level was ~1 meter above modern sea level
~81,000 years ago
during marine isotope stage (MIS) 5a. Although
our findings seemingly conflict with the eustatic sea-level curve of
sites, they corroborate an alternative view that
MIS 5a was at least as ice-free as the present, and they challenge the
view of MIS 5 sea-level history and certain
facets of ice-age theory.
the statement that “the earth has not seen CO2 levels this high in
800,000 years” cannot be backed up with evidence. It is more likely the
earth has seen CO2 levels close to today’s level 8 times in the last 2.5
million years, and each of those times despite the increased level, it
did not stop the earth from going back into a glacial stage right on
schedule. Thus CO2 is not driving the climate and the theory of man-made
global warming is proven false."
You have an entire field of study in conflict with itself because
nobody dares question the holy measuring stick that is the ice core
They cannot reconcile why sea level data and ice core data
do not match. They cannot reconcile why radiocarbon dating of coral
reefs do match sea level predictions. They cannot tell you how the
woolly mammoths died out and were found with tropical plants still in
their stomachs. And scientists are still trying to twist their data and
explain why nothing seems to fit.