Sentences with phrase «with during the glacial period»

Not exact matches

* Circulation changes in the Faeroe - Shetland Channel correlating with cold events during the last glacial period (58 - 10 ka).

Using climate models to understand the physical processes that were at play during the glacial periods, the team were able to show that a gradual rise in CO2 strengthened the trade winds across Central America by inducing an El Nino - like warming pattern with stronger warming in the East Pacific than the Western Atlantic.

They compared them with mammals that lived at seven Eurasian sites during the last glacial period 35,000 to 12,000 years ago.

During the last part of the Pleistocene there were actually five major periods of glaciation with four periods of warmer non glacial conditions between them.

For example, the uniform lowering of tropical snowline by about 900 meters during the Last Glacial Maximum is generally attributed to cooling [Porter 2001], and indeed provided the first indication that something was wrong with plankton - based estimates of tropical cooling during the glacial Glacial Maximum is generally attributed to cooling [Porter 2001], and indeed provided the first indication that something was wrong with plankton - based estimates of tropical cooling during the glacial glacial period.

ABSTRACT BODY: The high - latitude, shallow ESAS has been alternately subaerial and inundated with seawater during glacial and interglacial periods respectively.

Some unknown natural forcing exists with a period of 1470 yrs, and the climate system is subject to stochastic resonance during glacials.

It seems increasingly clear that D - O events must involve major sea ice changes (and there is not much sea ice left, by comparison with what was present during the glacial period (20000 + years ago, when these events happened), so D - O events are increasingly unlikely in the future).

The kind of switch operating during glacial periods, leading to D - O events, is unlikely to work in a warm climate with relatively little ice.

It is virtually certain that millennial - scale changes in atmospheric CO2 associated with individual antarctic warm events were less than 25 ppm during the last glacial period.

The planet went from interglacial warm to glacial cold during the Younger Dryas period with cooling for around 1000 years.

It rose more than that going from the glacial period to the Younger Dryas (about 120 m), and may have risen about 24 m to 36 m from the Younger Dryas to the Holocene, but has only slowly varied during the Holocene, with variation less than 1 m over the last 6,000 y. I don't think NYC is in any danger.

Similarly, a colder climate with generally decreased humidity q O could be closer to the critical threshold, which might be the reason for less - stable monsoon circulations during glacial periods.

During the same period, the terminus of the glacier thinned.2 The correlation of these glacial changes with rising temperatures implies that warming influences glacier motion almost immediately.1, 2,7,8

Manabe and Stouffer (1993) pioneered the demonstration of a transition under future warming; an improved model showed a shutdown was especially likely with rapid increase of greenhouse gas emissions, Stocker and Schnitter (1997); see also Broecker (1997); Wood et al. (1999); summary: Rahmstorf (1999); Ganopolski and Rahmstorf (2001) for instability during a glacial period; IPCC (2001a), pp. 439 - 40.

Our record shows that CO2 variations during the glacial period have a clear relationship with abrupt climate changes in the Northern Hemisphere that continues into the deglacial period.

1998 was near the tail end of a decade that jumped well above the mean average longer term rate of increase (there is a thing called climate variability, it didn't disappear with climate change, and if anything probably only intensified;, and ocean warming and glacial melt both accelerated during this period, taking more energy out of the air — see below).

Similarly, warm periods with glacial retreat occurred within the late Cenozoic cool period during the late Oligocene and early Miocene epochs.

The duration and severity of the glacial periods increased during this period, with a particularly sharp change occurring between 900,000 and 600,000 years ago.