Sentences with phrase «of glacial response»

We can do this for obliquity and precession themselves, to gauge the changing strength of the driving influence, and to the LR04 stack to gauge the strength of the glacial response.

Not exact matches

In response to a shareholder question about what could be done to speed up the glacial pace of adoption of electric car production by other car companies, Musk said he was «playing with doing something fairly significant on this front which would be kind of controversial with respect to Tesla's patents.»

«the last glacial period is a good example of a large forcing (~ 7 W / m ^ 2 from ice sheets, greenhouse gases, dust and vegetation) giving a large temperature response (~ 5 ºC) and implying a sensitivity of about 3ºC (with substantial error bars).»

As we have discussed previously, the last glacial period is a good example of a large forcing (~ 7 W / m2 from ice sheets, greenhouse gases, dust and vegetation) giving a large temperature response (~ 5 ºC) and implying a sensitivity of about 3ºC (with substantial error bars).

The sequence of climatic forcings and responses during deglaciations (transitions from full glacial conditions to warm interglacials) are well documented.

Kim, S. - J., G.M. Flato, G.J. Boer, and N.A. McFarlane, 2002: A coupled climate model simulation of the Last Glacial Maximum, Part 1: Transient multi-decadal response.

Glacial Isostatic Adjustment (GIA) occurs in response to retreating ice from the last glacial period, where around most of the world, land is subsiding at a fraction of a millimetre per year, compounding the problem of sea - leveGlacial Isostatic Adjustment (GIA) occurs in response to retreating ice from the last glacial period, where around most of the world, land is subsiding at a fraction of a millimetre per year, compounding the problem of sea - leveglacial period, where around most of the world, land is subsiding at a fraction of a millimetre per year, compounding the problem of sea - level rise.

CAMBRIDGE, MA — The Obama administration characterizes its plan to offer states waivers from some provisions of the No Child Left Behind Act (NCLB) as a necessary response to glacial congressional progress on reauthorizing and revising the Elementary and Secondary Education Act (whose current version is NCLB).

[Response: Given your extensive reading of the blog, you surely can't be unaware that I have consistently stated that the best constraints on sensitivity come from the paleo record - and most importantly the last glacial period.

«the last glacial period is a good example of a large forcing (~ 7 W / m ^ 2 from ice sheets, greenhouse gases, dust and vegetation) giving a large temperature response (~ 5 ºC) and implying a sensitivity of about 3ºC (with substantial error bars).»

Two independent multidisciplinary studies of climatic change during the glacial - Holocene transition (ca, 14,000 - 9,000 calendar yr B.P.) from Norway and Switzerland have assessed organism responses to the rapid climatic changes and made quantitative temperature reconstructions with modern calibration data sets (transfer functions).

«Data from GPS measurements and carbon dating of marsh sediments indicate that regional land subsidence in response to glacial isostatic adjustment in the southern Chesapeake Bay region may have a current rate of about 1 mm / yr (Engelhart and others, 2009; Engelhart and Horton, 2012).

Glacial Isostatic Adjustment (GIA) occurs in response to retreating ice from the last glacial period, where around most of the world, land is subsiding at a fraction of a millimetre per year, compounding the problem of sea - leveGlacial Isostatic Adjustment (GIA) occurs in response to retreating ice from the last glacial period, where around most of the world, land is subsiding at a fraction of a millimetre per year, compounding the problem of sea - leveglacial period, where around most of the world, land is subsiding at a fraction of a millimetre per year, compounding the problem of sea - level rise.

The mid-Holocene (6000 years ago) and Last Glacial Maximum (~ 20,000 years ago) are also attractive targets of model validation, and while some successes have been noted (i.e. Joussaume et al, 1999, Rind and Peteet, 1985) there is still some uncertainty in the forcings and response.

[Response: All forcings are calculated by changing the boundary conditions (in this case the distribution of glacial ice, and looking to see what the change in net radiation is while keeping everything else constant.

[Response: To pre-empt some mutual incomprehension, note that industrial CO2 rises are certainly an anthropgenic forcing and not a response (see here and here), but clearly CO2 changes over glacial - interglacial cycles is both a response (to Milankovitch - driven changes) and a forcing (since the additional radiative forcing from CO2 is about a third of that needed to keep the ice ages as cold as they are — seResponse: To pre-empt some mutual incomprehension, note that industrial CO2 rises are certainly an anthropgenic forcing and not a response (see here and here), but clearly CO2 changes over glacial - interglacial cycles is both a response (to Milankovitch - driven changes) and a forcing (since the additional radiative forcing from CO2 is about a third of that needed to keep the ice ages as cold as they are — seresponse (see here and here), but clearly CO2 changes over glacial - interglacial cycles is both a response (to Milankovitch - driven changes) and a forcing (since the additional radiative forcing from CO2 is about a third of that needed to keep the ice ages as cold as they are — seresponse (to Milankovitch - driven changes) and a forcing (since the additional radiative forcing from CO2 is about a third of that needed to keep the ice ages as cold as they are — see here).

[Response: If the rise in atmospheric CO2 at the end of the last glacial time had come from organic carbon (trees, peat, dissolved organic matter in the ocean) or especially methane (which is even more isotopically «light» than CO2) it would have left an isotopic signature.

[Response: The climate of the last glacial maximum was six degrees colder than today.

Once the ice reaches the equator, the equilibrium climate is significantly colder than what would initiate melting at the equator, but if CO2 from geologic emissions build up (they would, but very slowly — geochemical processes provide a negative feedback by changing atmospheric CO2 in response to climate changes, but this is generally very slow, and thus can not prevent faster changes from faster external forcings) enough, it can initiate melting — what happens then is a runaway in the opposite direction (until the ice is completely gone — the extreme warmth and CO2 amount at that point, combined with left - over glacial debris available for chemical weathering, will draw CO2 out of the atmosphere, possibly allowing some ice to return).

A process of dynamic glacial thinning also seems to occur, running back - stream up the glacier, in response to the initial shock of the ice - shelf loss.

Nor can it create the match between changes in the * amplitude * of astronomical cycles and glacial response.

However, there's less match between the amplitude changes in the most recent million years or so, yet another indicator that the response of glacial changes to astronomical cycles is itself changing over time.

The one big temp response that may increase is a decrease in glacial melt which would reduce the dampening effect of latent heat transfer.

Abrupt and severe temperature shifts have occurred on occasion in the past, typically separated by hundreds of years or more, but shifts of this magnitude that are global in extent have almost always occurred during glacial eras, when the extent of snow and ice allowed for great changes in feedback in response to only modest signals.

A, G., J. Wahr, and S. Zhong (2013) «Computations of the viscoelastic response of a 3 - D compressible Earth to surface loading: an application to Glacial Isostatic Adjustment in Antarctica and Canada», Geophys.

That is to say that we have seen 100ppm CO2 rise for * maybe * one degree warming in the MWP whereas the ~ 100ppm CO2 response in the glacial periods was in response to a rise of 10oC.

This is pretty lame as the CO2 in the atmosphere is clearly unnatural and the response is an order of magnitude greater than what the MWP might cause if it were the same mechanism as in the glacial periods.

The latest slandering of climate science in the press has been dubbed «glaciergate «-- about the Himalayan glacial melt issue (see David Spratt's response here).

Glacial ice presses down on the bedrock below it: when the ice melts, the bedrock rises in response to the drop in pressure, and sophisticated satellite measurements can deliver enough information to help scientists put a figure on the loss of ice.

Second, the abstract admits that, «Pleistocene climate oscillations yield a fast - feedback climate sensitivity of 3 ± 1 °C for a 4 W m − 2 CO2 forcing if Holocene warming relative to the Last Glacial Maximum (LGM) is used as calibration, but the error (uncertainty) is substantial and partly subjective» and also «Ice sheet response time is poorly defined».

Glacial earthquakes are associated with the accelerating retreat of glaciers such as Kangerdlugssuaq in response to global warming.1

This is supported by multiple lines of evidence, including GCMs, paleoclimate evidence (including climate response to forcing during glacial periods as well as millennial proxies), the instrumental record, and the climate response to volcanic forcings among others.

GMT drops initially at glacial inception in response to decreased summer radiation at high northern latitudes that would have led to equatorward extension of sea ice and snow cover with associated cooling from increased albedo.

This second point was also made by James Annan in response to Hansen's 2008 Target CO2 paper, where he essentially used the same method as Snyder is using (but came to a smaller ESS value of 6 degrees, because Snyder uses a greater temperature - amplitude between glacial - interglacial).

Mann, D.H., D.M. Peteet, R.E. Reanier, and M.L. Kunz, 2002: Responses of an arctic landscape to late glacial and early Holocene climatic changes: The importance of moisture.

Related Volcanoes, Tree Rings, and Climate Models: This is how science works Fossil Focus: Using Plant Fossils to Understand Past Climates and Environments Atmospheric oxygen over Phanerozoic time Coupled carbon isotopic and sedimentological records from the Permian system of eastern Australia reveal the response of atmospheric carbon dioxide to glacial growth and decay during the late Palaeozoic Ice Age

That was toward the end of the Holocene Thermal Maximum, itself the drawn - out response to peak orbital (Milankovitch) forcing and associated feedbacks that terminated the last glacial 11.5 ka.

Researchers investigated the response of Atlantic Meridional Overturning Circulation (AMOC) to the rise of atmospheric CO2 in the NCAR Climate System Model version 3, with the focus on the different responses under modern and glacial periods.

Florida scientists have identified a series of these natural marine «hotspots» where the seas are rising far faster than the oceans as a whole, in response to glacial melting and thermal expansion of the waters.