Sentences with phrase «paleoclimate studies»

The research drew lessons from paleoclimate studies of the Last Glacial Maximum, the cold peak of the last ice age, that relate to the extent of warmth possible in an era of accumulating greenhouse gases:

However, the separation of char from soot has rarely been applied in paleoclimate studies using sediment analysis, much less in investigations of long - term records of paleo - fires.

The finding that the last century has seen an exceptional rise in global temperatures at the same time that physics indicates that extra energy is being retained by the rising CO2 is common to many paleoclimate studies.

It was mainly because guys like this — ok, shall be nameless, you read it yourself [points to slide with images of David Halpern, NASA and Mark Eakin NOAA]-- Who at that time was actually working for NOAA and NASA and was funding some of those guys like Michael Mann and all that on paleoclimate study was saying, look man, we need some kind of cogent reply, some kind of serious critical discussion so they could pass on to somebody in OSTP.

steven mosher Says: August 30th, 2011 at 2:20 pm Marlowe Johnson Says: August 30th, 2011 at 1:30 pm «paleoclimate studies offer very little useful information in relation to the determination of climate sensitivity.»

To conduct landmark paleoclimate studies from Lake El «gygytgyn in eastern Siberia, geologist Julie Brigham - Grette of the University of Massachusetts, Amherst, relied heavily on Russian collaborators she has partnered with for years.

The example of millennial paleoclimate studies emphasises the paucity of this argument, as the expert list is very small.

Further evidence from paleoclimate studies indicate that many other variables are involved.

[5] Additional paleoclimate studies are still needed in order to test the reliability of these coral results.

Answer: The first order of business here is to correct the mischaracterization of this single paleoclimate study as the «foundation» of global warming theory.

Figure 4 Figure 5 Figure 7 (Source CDIAC) A never before western published paleoclimate study from China suggests warmer temperatures in the past.

Chapter 6 highlights the fact that there are now a large number of different paleoclimate studies which all lead to the same key conclusion that northern hemisphere mean temperatures in recent decades are likely unprecedented in at least a millennial timeframe.

In summary, paleoclimate studies provide one line of evidence that supports an equilibrium climate sensitivity between about 2 and 4.5 °C, and the GWPF justification for dismissing these estimates is weak.

Paleoclimate studies attempt to estimate climate sensitivity based on the forcings and temperature responses from climate change events in the geologic record.

James, let me ask the question another way - you may feel paleoclimate studies including your own points strongly to a most likely value and range on climate sensitivity.

We surmise, based on our implementation of the methodology, that the R - squared and Coefficient of Efficiency (as this is defined in paleoclimate studies) statistics fail to reach statistical significance for the AD1400 step.

...... physics indicates that extra energy is being retained by the rising CO2 is common to many paleoclimate studies.......

The paleoclimatology community seems to be tightly coupled as indicated by our social network analysis, has rallied around the [Mann] position, and has issued an extensive series of alternative assessments most of which appear to support the conclusions of MBH98 / 99... Our findings from this analysis suggest that authors in the area of paleoclimate studies are closely connected and thus «independent studies» may not be as independent as they might appear on the surface.

There are tons of studies — ranging from paleoclimate studies to studies of volcanic effects, etc. that constrain climate response and which generally yield results consistent with the models.

Paleoclimate studies of this sort depend on how well scientists can reconstruct past conditions using proxies.

This is a very important number, and probably the most relevant number as we progress into the 21st century, but paleoclimate studies are primarily focused on the equilibrium response (i.e., after the oceans have warmed up sufficiently to allow the top of atmosphere radiative budget to be balanced).

Paleoclimate studies (e.g., Peterson et al. 2000, Haug et al. 2001) and a series of modeling studies starting with Vellinga and Wood (2002), Chiang and Bitz (2005) and Broccoli et al. (2006) have revealed one important driver of ITCZ shifts: differential heating or cooling of the hemispheres shifts the ITCZ toward the differentially warming hemisphere.

Paleoclimate studies may be of a high quality.

Martin, when you have seen enough of these paleoclimate studies having been shown to have major flaws you don't believe any of them until they have been properly audited by someone like Steve McIntyre.

He has been critical of some of the paleoclimate studies which have claimed that 20th century temperatures are the hottest in a thousand years.

Our analysis is based on about equal parts of information gleaned from paleoclimate studies, climate modeling, and modern observations of ongoing climate changes.

That estimate appears to rely, I'm not sure, on a paleoclimate study, Santer et al 1995b, on SST.

The new best estimate puts climate sensitivity right around 3 °C warming in response to doubled carbon dioxide levels, in line with estimates from climate models and paleoclimate studies.

Shortly thereafter, Kummer & Dessler published a paper noting that this issue could potentially bring the climate sensitivity estimates from the energy budget method in line with estimates from climate models and paleoclimate studies.

Unfortunately, paleoclimate studies have shown that this effect isn't large enough to keep the planet from getting uncomfortably hot (with numerous unpleasant side - effects) should enough greenhouses gases get added to the atmosphere.

A coupled dynamical ocean - energy balance atmosphere model for paleoclimate studies.

We had no «globally and annually averaged land and sea surface temperature» indicator back in medieval times, so we have to rely on the information we can get from historical records and paleoclimate studies.