Sentences with phrase «into glaciation»

Well, RGates and I are working on a deal to store enough energy in the Earth system to at least ameliorate the descent into glaciation.

Did the SH go back into glaciation once the NH started warming back up?

The current Holocene interglacial period might last up to another 3,000 years before the Earth plunges into another glaciation.

Leaving aside the descents into glaciation, which were much more gradual, the sudden (geologically speaking) jumps up in temperature every ~ 100,000 years represent a rate of change roughly ten times slower what we are currently witnessing.

The paper in Ambio (1997) shows in Fig 2 the entrance into glaciation starting now if CO2 is 210 ppmv, but the threshold in our model for entering into glaciation has been indicated many times to be 240 ppmv (see paper by Loutre and Berger cited by Tzedakis et al., and the papers Berger and Loutre in Science 2002, Berger et al. in Surveys in Geophysics 2003).

In the paper Crucifix et al., 2005, sensitivity to the entrance in glaciation is discussed in the framework of the Ruddiman hypothesis showing that low CO2 levels are necessary to enter into glaciation now.

New insights into the glaciation cycles that occurred on Earth long before humans began affecting the temperature of the atmosphere and oceans are now possible using the technique of measuring noble gas quantities.

Not exact matches

Many aspects of this extreme glaciation remain uncertain, but it is widely thought that the breakup of the supercontinent Rodinia resulted in increased river discharge into the ocean.

This chemical weathering process is too slow to damp out shorter - term fluctuations, and there are some complexities — glaciation can enhance the mechanical erosion that provides surface area for chemical weathering (some of which may be realized after a time delay — ie when the subsequent warming occurs — dramatically snow in a Snowball Earth scenario, where the frigid conditions essentially shut down all chemical weathering, allowing CO2 to build up to the point where it thaws the equatorial region, at which point runaway albedo feedback drives the Earth into a carbonic acid sauna, which ends via rapid carbonate rock formation), while lower sea level may increase the oxidation of organic C in sediments but also provide more land surface for erosion... etc..

On the other hand, during those periods between widespread glaciation, the water had melted from the ice sheets and polar areas, flowed, back into the oceans and sea level was as high or higher than now.

As astronomical cycles they are predictable into the future and will cause another ice age probably in around 50,000 years (that depends on where the threshold for glaciation is, and what future CO2 levels will be at that time), but there is no way the Milankovich cycles could explain the current global warming.

One paper at https://www.sciencedirect.com/science/article/pii/S1055790309004965 mentions the, «Divergence of the Pleurobranchinae into the Antarctic Tomthompsonia and the remaining species in Early Oligocene coincides with two major geological events; namely the onset of glaciation in Antarctica and the opening of the Drake Passage with following formation of the Antarctic Circumpolar Current (ACC).

Be thankful that the we are insulated from the huge volume of cold waters that comprise the ocean, because if it ever became far more mixed with the surface layers we would plunge into permanent glaciation.

So what are you willing to do to prevent rapid cooling into the next glaciation — rather than the lemming mantra of global warming?

For example, we are warming far too fast to be coming out of the last ice age, and the Milankovitch cycles that drive glaciation show that we should be, in fact, very slowly going into a new ice age (but anthropogenic warming is virtually certain to offset that influence).

I deal with the spin on a daily basis, while personally I have made my own investigations into what people refer to as climate science and compare it to other, less politicized scientific inquiries into paloeoceanography, paleogeology, paleoclimatology, and of course the science related to our current ice age and what pulls us into periods of glaciation and what impacts trigger interglatial warming periods.

Avoid glaciation I have seen very little discussion addressing the far greater problem of what we do to ensure that we do not descend into the next glaciation.

The present «short warming period», NOW being just after a Glaciation only 20,000 years into reversion, is infact just one of many that have existed tween the ~ 60 «glaciations» within this present ~ 3 million year long «Primary Trough» climate behavior.

Now that those «few hundred years» are «gone» from the «stick», one wonders how many MORE «committee meetings» it will take to «remove the rest»... The «drop» into the present» 3 million year» long period of recurring glaciations was sufficiently «drastic» to «reduce» bio-forms that evolved within the previous ~ 200 Million year «Primary Peak» climate behavior.

Humanity needs to LIVE with these changes of NATURE, recognise the SIGNIFICANCE of Natural persistence of CHANGE and CEASE attempting puerile political play of a «blame game»... or drown under the NATURAL deluge (which will eventually arrive ANYWAY) whilst still chanting the «greenhouse mantra»... This «Present» is but one of many tween the ~ 60 glaciations of the past 3 Million years (so far) Primary Trough, the descent INTO this «Primary Trough» was reasonable RAPID and so it could be that it will ALSO be «short».

254 G. C. Bond, R. Lotti, «Iceberg discharges into the North Atlantic on millennial time scales during the last glaciation,» Science 267:1005 (17 February 1995).

Glaciation when the stuff stays on land and does not melt and flow back into the oceans via rivers.

A very major error in the Social Cost of Carbon is not including the BENEFIT of avoiding sinking into the next glaciation from a 7 deg C (13 deg F) fall in temperature.

in addition another thought they do not bring up is under sea volcanic activity may heat up the oceans, increasing the amounts of water vapor put into the atmosphere which could result in more snowfall and eventual glaciation.

«some authors propose a 10 Ma long North African glaciation that started much earlier in the Ordovician (Ghienne, 2003) and lasted well into the Silurian (Grahn and Caputo, 1992; Caputo, 1998; Pope and Read, 1998; Crowell, 1999; Saltzman and Young, 2005).

«In particular, this mechanism may have contributed to Earth's entry into a long period of global glaciation around 700 million years ago, a theory known as the Snowball Earth hypothesis.»

Opening with a biographical sketch of Broecker — who, we learn, was born to an Evangelical suburban Chicago family, and initially drifted into his scientific vocation via a summer job in a radiocarbon dating lab — the book explains the currently - accepted Milankovitch theory of Ice Age glaciation; proceeds to an account of the Dr. David Keeling's measurements atmospheric CO2; continues with a summary of research work on glacial ice cores, sediments, and fossil pollen from around the world showing startlingly abrupt prehistoric climate changes; and moves on to the possible consequences of continued warming, closing with an account of the prospects of removing carbon dioxide from the atmosphere.

On the other hand, if some of the anthropogenic aerosols act as ice nuclei, supercooled clouds could be converted into ice clouds by the glaciation indirect effect (Lohmann, 2002), resulting in more efficient precipitation formation.

Although there is limited evidence of ice - rafted debris in the Arctic from the Miocene and into the Eocene, suggesting some continental glaciation (Stickley et al., 2009; St. John and Krissek, 2002), empirical evidence suggests that widespread Northern Hemisphere glaciation did not occur until 2.75 Ma (Ravelo et al., 2004), which is substantiated by recent Pliocene paleotemperature SST estimates near Svalbard between 10 and 18 °C (Robinson, 2009).

The SECONDARY oscillations would still occur however, but would NOT dip into «glaciations».

The time line involving the last 2 to 3 Million years of the appearance of «Human forms» and the return into a Period of recurring glaciation are near simultaneous (in terms of the «times» involved).