Ocean sediment data - Ice Ages and Interglacials: Measurements, Interpretation, and Models - page 182

Figure 5.7. Comparison of variation of d 18 O data from Lisiecki and Raymo (2005) (lower
graph) with estimated sea level (inverse of ice volume) from Bintanja et al. (2005) over the past
500,000 years (upper graph).
been tuned to the point where they all agree with one another. Possibility (iii)
seems more likely to this writer.
Parrenin et al. (2007b) compared their Antarctic ice core data with ocean
sediment data. In their Figure 3, the two curves of isotope ratio vs. time for
800,000 years were compared. They said:
''[The benthic record] contains a sea level part and a temperature part and as
a consequence is older than [the Antarctic record] by several thousands of years.
For an easier comparison, we thus shifted it by 3,000 years towards older ages.
This 3,000-year phase is the observed phase of both records during the last
deglaciation.''
This claim of a mere 3,000-year time lag between temperature and ice volume
does not fit well with the models in Section 9.6 that suggest much longer time lags.
However, Lisiecki and Raymo (2005) seemed comfortable with benthic and
Antarctic time series overlaying one another. Lang and Wolff (2011) ''compiled 37
ice, marine and terrestrial palaeoclimate records covering the last 800,000 years in
order to assess the pattern of glacial and interglacial strength, and termination