Sentences with phrase «of paleoclimate»

It's unfortunate that Mark failed to realise, that there are now 36 separate studies that all find a hockey stick from reconstructions of paleoclimate data.

In my opinion, while the techniques used in the original Mann et al papers may have been slightly flawed, the work was the first of its kind and deserves considerable credit for moving the field of paleoclimate research forward.

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.

The committee has prepared a report that, in my view, provides policy makers and the scientific community with a critical view of surface temperature reconstructions and how they are evolving over time, as well as a good sense of how important our understanding of the paleoclimate temperature record is within the overall state of scientific knowledge on global climate change.

Climate model studies and empirical analyses of paleoclimate data can provide estimates of the amplification of climate sensitivity caused by slow feedbacks, excluding the singular mechanisms that caused the hyperthermal events.

It is through careful comparison of paleoclimate proxy data and climate models that understanding of past warm climates is improved.

Successful modeling of paleoclimate data with the high temperatures of the late 1990s is essential if we are to make robust, definitive conclusions about past temperature amplitudes and variability.»

In discussing the «pros and cons of the different lines of evidence», he questions the validity of the paleoclimate evidence (which supports the higher end of the range for equilibrium climate sensitivity):

Figure 5.7 from the AR5 compiles a range of paleoclimate reconstructions for the past two millennia:

But please spare us the lecturing from the mountaintop — you need to crawl out from that puddle of paleoclimate ignorance first.

It's not even true that this is the first time the IPCC report has made use of paleoclimate data; references to past climates can be found many places in the Third Assessment Report.

«This does not necessarily mean that a similar response would happen in the future with increasing CO2 levels, since the boundary conditions are different from the ice age,» added by Professor Gerrit Lohmann, leader of the Paleoclimate Dynamics group at the Alfred Wegener Institute.

Professor Gerrit Lohmann, leader of the Paleoclimate Dynamics group at the AWI said: «In terms of the Earth's history, we are currently in one of the climate system's more stable phases.

Now note that the most recent IPCC results (Fourth Assessment Report) indicate, with high confidence, a 21st - century temp increase of 3.5 - 8 deg F. My reading of the paleoclimate data suggests that the last time GAT was 3.5 deg F warmer was roughly 4 million years ago (whereas modern humans came on the scene roughly 150,000 years ago).

By incorporating multiple records, we can identify which aspects of paleoclimate best predict hominin evolution.

Here we use a comprehensive set of paleoclimate indicators: East African Rift lake presence, regional Aeolian flux records from the Arabian Sea, the Mediterranean and the East Atlantic together global benthic foraminifera δ18O with to develop models predicting hominin brain size.

The students in the hurricane seminar course are students mainly interested in atmospheric dynamics and I do not believe that any of them have taken the paleoclimate course or have much knowledge of paleoclimate or the hockey stick debate.

Zorita is a Spanish paleoclimatologist who is currently is the head of the Department of Paleoclimate at the GKSS Research Centre in Germany.

Tony Brown has offered an insightful analysis concerning Central England Temperature and its implications for the validity of paleoclimate reconstructions.

* When instrumental records are not available, the historic observed record of the past millennium is likely to be a valuable aid to the development of paleoclimate reconstructions using proxies.

«Most of the paleoclimate records from this region are plant - based, and track only the warm part of the year — the growing season,» says Candace Major, program director in NSF's Directorate for Geosciences, which funded the research.

Reply to Roberts et al.: A subdecadal record of paleoclimate around the Youngest Toba Tuff in Lake Malawi

One approach to answer these important questions is the investigation of paleoclimate data like the ancient alkenones analyzed by van der Bilt and colleagues.

For example, Jessica tell Mike how she and her colleagues pulled together a sweeping collection of paleoclimate evidence to reveal how the jet stream contracted and twisted in glacial boundary conditions, rather than moving monolithically south.

These long - term trends show the largest increase in temperatures of any paleoclimate event during the past millions of years.

It may be that ice records are the only sources of paleoclimate data he knows about.

As a geologist, I can't help but wonder whether the huge influx of paleoclimate data represented by Vostok and similar ice cores might not drive us to a new consensus, much as new information about the sea floor revolutionized thinking about the movement of continents (and later «plates») on the surface of the dynamic earth.