Hypotheses and inferences concerning
the nature of abrupt climate change, exemplified by the Dansgaard - Oeschger (D / O) events, are reviewed.
Hypotheses and inferences concerning
the nature of abrupt climate change, exemplified by the Dansgaard - Oeschger (D / O) events, are reviewed.
Not exact matches
Precise interpolar phasing
of abrupt climate change during the last ice age,
Nature, 520, 661 - 665, doi: 10.1038 /
nature14401.
Andy — As far back as Severinghaus et al (Timing
of abrupt climate change at the end
of the Younger Dryas interval from thermally fractionated gases in polar ice, 1998,
Nature), the ice - core data showed clearly that the
abrupt climate changes (end
of the Younger Dryas in that case) were faster than the methane
changes.
A far better term is «
climate disruption», which captures the real
nature of the vast array
of changes, many
of them
abrupt and unexpected, that are occurring.»
This has created much confusion about the
nature and causes
of Holocene
abrupt climatic
changes and has given many the false impression that the Holocene is characterized by long periods
of climate stability.
Such losses
of individuals that take species towards critical viability thresholds can be very fast — within three decades or less, as already evidenced by many species now considered at risk
of extinction due to causes other than
climate change by the International Union for the Conservation
of Nature.15 The second kind
of abrupt change is simply the terminal event in the extinction process — the loss
of the last individual
of a species.
I tend to agree with the conclusions
of Carolyn Ruppel [see above] and USCCSP SAP 3.4 Chapter 5 [the
abrupt climate change report mentioned above] that increases in emissions as large as those suggested in the
Nature article are unlikely.»