Sentences with phrase «conditions during interglacials»
This is because warmer conditions during interglacials encouraged the collapse of ice shelves.
http://www.antarcticglaciers.org/ Not exact matches
Instead, the fossil record indicates they vanished during the Earth's glacial - interglacial transition, which occurred about 12,000 years ago and led to much warmer conditions and the start of the current Holocene period.
The sequence of climatic forcings and responses during deglaciations (transitions from full glacial conditions to warm interglacials) are well documented.
The current secondary contact is thought to result from a range expansion associated with the amelioration of climatic conditions after the last glacial maximum (∼ 18000 ya)[20], although previous glacial / interglacial cycles during the Pleistocene may have provided multiple opportunities for vicariant and past hybridization events.
In any event, there is unequivocal geologic evidence for parts of the GIS still in tact during the last interglacial, and Northern Hemisphere ice core records (see NEEM) now go back that far, which rules out ice - free conditions at the time in the NH.
That is all I meant except to point out that conditions during the Eemian interglacial in East Africa were not conducive to human habitation; many groups left for more hospitable locations.
[Response: If this reservoir existed and was so poised to release methane as you speculate, then it would have done something during warmer conditions early in the Holocene, or in the last interglacial.
You said: «If this reservoir existed and was so poised to release methane as you speculate, then it would have done something during warmer conditions early in the Holocene, or in the last interglacial.
It is also clear that conditions during the last interglacial (LIG, 125 kya BP) that temperature changes were close to what is anticipated by the end of the century.
During subsequent interglacials, when humid conditions returned to the tropics, the forests expanded and were repopulated by plants and animals from the species - rich refuges.»
However, a major sudden cold event did probably occur under global climate conditions similar to those of the present, during the Eemian interglacial, around 122,000 years ago.
Müller, C. Reconstruction of the paleontological conditions at the Laptev Sea continental margin during the last two glacial / interglacial cycles based on sedimentological and mineralogical investigations.
Matthiessen, J. & Knies, J. Dinoflagellate cyst evidence for warm interglacial conditions at the northern Barents Sea margin during marine oxygen isotope stage 5.
This type of behavior is especially evident during transitions from glacial to interglacial conditions, when climate is affected by a wide variety of time - varying influences and is relatively unstable.
but this occurred under significantly different orbital forcing conditions» This is to make us believe that a global mean temperature could drive the melting or calving of the Greenland; but the Eemian diminution of the Greenland ice cap is by no means related to an average global temperature but to the local summer insolation that during the last interglacial was up to 30 W / m ² to 60 W / m ² stronger than today's.
each period of warming during the descent to the next glacial stage should be more intense than the previous ones, as climatic variability increases outside the warm conditions of an interglacial climatic optimum.
Other processes must be responsible for the 40 - to 50 - ppm pCO2 drawdown during the initial transition from interglacial to glacial conditions as well as for a comparable pCO2 increase during the latter part of glacial terminatins.
In the first post, we described the conditions that exisited during the Last Interglacial.
Climate change models predict that the Middle East will get warmer and drier, similar to the conditions during the last interglacial period when the Dead Sea dried up.