Sentences with phrase «paleoclimatologists in»

This May, three of us were at a conference of almost one thousand paleoclimatologists in Zaragoza (see photo below).

Not exact matches

Paleoclimatologists have probed ancient silt for grains of crop pollen and charcoal from fires, for instance, in attempts to say definitively whether and when human beings were on the scene.

«This is a snapshot of a hominin in a landscape that's really open,» agrees paleoclimatologist Peter deMenocal of Columbia University's Lamont - Doherty Earth Observatory in Palisades, New York, who has argued that climate change sparked intense periods of speciation.

In order to understand Earth's recent temperature record, it's essential to understand the impacts from these natural cycles, says Byron Steinman, a paleoclimatologist at the University of Minnesota's Large Lakes Observatory in Duluth and lead author of the new studIn order to understand Earth's recent temperature record, it's essential to understand the impacts from these natural cycles, says Byron Steinman, a paleoclimatologist at the University of Minnesota's Large Lakes Observatory in Duluth and lead author of the new studin Duluth and lead author of the new study.

«There is no convincing evidence that a sufficiently large reservoir of old metabolic carbon existed in some mysterious location in the glacial ocean only to be ventilated during deglaciation,» argues paleoclimatologist Lowell Stott of the University of Southern California, who was not involved in the study.

asks Bette Otto - Bliesner, a paleoclimatologist at the National Center for Atmospheric Research in Boulder, Colo. «That's something we're still trying to determine.»

In contrast, the consensus view among paleoclimatologists is that the Medieval Warming Period was a regional phenomenon, that the worldwide nature of the Little Ice Age is open to question and that the late 20th century saw the most extreme global average temperatures.

«Looking back on 2500 years, there are examples where climate change impacted human history,» says the study's lead author, Ulf Büntgen, a paleoclimatologist at the Swiss Federal Research Institute for Forest, Snow and Landscape in Zurich.

One of the researchers affected by the cuts is Romanian paleoclimatologist Bogdan Onac of the University of South Florida in Tampa, who used his 2011 CNCS grant, worth $ 455,000, to rekindle research relationships with his home country.

That way, says paleoclimatologist Julian Sachs of the University of Washington, Seattle, «we can establish very well the maximum and minimum temperature in each year the clam lived.»

In the past decade, paleoclimatologists have reconstructed a record of climate change over the last millennium by consulting historical documents and examining indicators of temperature change like tree rings, as well as oxygen isotopes in ice cores and coral skeletonIn the past decade, paleoclimatologists have reconstructed a record of climate change over the last millennium by consulting historical documents and examining indicators of temperature change like tree rings, as well as oxygen isotopes in ice cores and coral skeletonin ice cores and coral skeletons.

Modeler Bette Otto - Bliesner of the National Center for Atmospheric Research in Boulder and paleoclimatologist Jonathan Overpeck of the University of Arizona matched results from the Community Climate System Model and climate records preserved in ice cores, exposed coral reefs, fossilized pollen and the chemical makeup of shells to determine the accuracy of the computer simulation.

For paleoclimatologist James White, adventures begin when a C - 130 transport plane drops him and his team in the middle of Greenland's ice cap.

Instead, Columbia University climate scientist Kevin Anchukaitis and paleoclimatologist Michael Evans of the University of Maryland, College Park, took samples the diameter of a pencil from two trees in the region.

«It is simply startling that a state government in the United States would... deny its citizens the opportunity to learn about the history and prehistory of their own state,» says paleoclimatologist Glen MacDonald of the University of California, Los Angeles.

«Beyond that we have to rely on indirect, or proxy, methods to reconstruct CO2,» said Miguel Martinez - Boti, a paleoclimatologist at the University of Southampton and the lead author of the study, in an email.

The 20th century increases look unusual,» said Elizabeth Thomas, a paleoclimatologist with the British Antarctic Survey in Cambridge, United Kingdom, and lead author of the new study.

By studying sediment cores from the deep Pacific near the Philippines, paleoclimatologist Lowell Stott of the University of Southern California in Los Angeles and his colleagues revealed that the temperatures of the deepest seas rose by around 2 degrees Celsius (3.6 degrees Fahrenheit) at least 1,000 years before sea - surface temperatures.

Relevant to this issue, there is currently a debate among paleoclimatologists with respect to the following condundrum: A dramatic recession of the more - than - 11,000 year old ice cap of Mt. Kilimanjaro in tropical East Africa is taking place despite any clear evidence that temperatures have exceeded the melting threshold (one explanation is that the changes are largely associated with a drying atmosphere in the region; the most recent evidence, however, seems to indicate that melting may indeed now be underway).

And at least one of these common passages on tree ring proxies closely follows a classic text by noted paleoclimatologist Raymond Bradley, but with a key alteration not found in the original.

This expected large sea - level rise does of course not surprise us paleoclimatologists, given that in earlier warm periods of Earth's history sea level has been many meters higher than now due to the diminished continental ice cover (see the recent review by Dutton et al. 2015 in Science).

Authors of the study, in addition to Bird and Wilson, are IUPUI assistant professor of earth sciences William P. Gilhooly III, former IUPUI graduate student Lucas Stamps, and University of Minnesota Duluth paleoclimatologist and paleolimnologist Byron A. Steinman.

After undertaking many computer simulations lasting 30 theoretical years of 365 days (with the GENESIS2 model), however, astronomer Darren Williams, paleoclimatologist David Pollard, and their colleagues at Pennsylvania State University at Erie have come to believe that Earth could support life even in highly elliptical orbits (0.3 > e > 0.7).

Variations in the literature abound with regard to the precise definition, and the term is often used by paleoclimatologists and glaciologists without formal dates attached.

On Friday, March 16, 2012, the famous paleoclimatologist Dr. Michael Mann spoke to all the students and faculty at Bishop O'Connell High School, a very large Catholic high school in Arlington, VA..

Although globally averaged annual temperatures warmed about 1 deg F since the early 1900s (viewed as rapid by paleoclimatologists and geologists), regional climate station annual temperatures in northern Minnesota show warming by several degrees F since the early 1900s.

Relevant to this issue, there is currently a debate among paleoclimatologists with respect to the following condundrum: A dramatic recession of the more - than - 11,000 year old ice cap of Mt. Kilimanjaro in tropical East Africa is taking place despite any clear evidence that temperatures have exceeded the melting threshold (one explanation is that the changes are largely associated with a drying atmosphere in the region; the most recent evidence, however, seems to indicate that melting may indeed now be underway).

While we are pleased that some of our observations, in particular, about verification statistics and non-robustness, have attracted academic interest (e.g. from Bürger), it was not our intent to develop methodological innovations or tell paleoclimatologists how to do their job.

On Friday, March 16, 2012, The famous paleoclimatologist Dr. Michael Mann spoke to all the students and faculty at Bishop O'Connell High School, a very large Catholic high school in Arlington, VA..

Like other paleoclimatologists, he also is finding that the warming trend that began in the 20th century is more pronounced in the Arctic than it is in the rest of the globe.

«As paleoclimatologists, we want to study Earth under conditions similar to those we have today, what we call «climate analogues,» which might tell us what to expect in the future,» he said.

Paleoclimatologists see it very clearly in climate proxies, while solar physicists reject it on the basis of a lack of mechanism.

The natural world has recorded its own stories in tree rings, lake sediments, ice, cave deposits, and fossils, and paleoclimatologists can put that information together to assemble thousands of years of climate history.

We should prepare now for dangerous global cooling (By Paleoclimatologist Tim Patterson, professor in the department of Earth Sciences at Carleton University in Ottawa)-- Excerpt: Solar scientists predict that, by 2020, the sun will be starting into its weakest Schwabe solar cycle of the past two centuries, likely leading to unusually cool conditions on Earth.

Peter Clark, an OSU paleoclimatologist and co-author of the Science paper, says that many previous temperature reconstructions were regional and not placed in a global context.

In summary, Mr. Frank actually becomes an arm waving paleoclimatologist (people who he really loathes) when he says that foram δ18O is a direct function of salinity (PSU).

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

As related in USA Today, the investigation followed a formal complaint by paleoclimatologist Raymond Bradley, co-author of the seminal (and controversial) 1998 and 1999 «hockey stick» temperature reconstructions.

«leading paleoclimatologists, Al Gore and U. N. have perpetrated misinformation on the world at large, which may in the end cost all of us trillions of dollars.

But it turned out that my work had come to the attention of at least one important player in this drama — paleoclimatologist and «hockey stick» co-author Raymond Bradley.

But «big changes in less than a decade» is how paleoclimatologists typically characterize all of the abrupt warmings and coolings in the best ice cores, though the full time course from one stable state to another may take a few decades.

There is a reference in M&M to AR1 -LRB-.2) as being used for benchmarking by paleoclimatologists.

An example: Earlier this year, Texas Rep. Joe Barton issued letters to paleoclimatologist Michael Mann and some of his co-authors seeking the details behind a taxpayer - funded analysis that claimed the 1990s were likely the warmest decade and 1998 the warmest year in the last millennium.

In 2005, «US paleoclimatologist Tim Patterson told a congressional committee... that there was no meaningful correlation between carbon dioxide levels and Earth's temperature during this geologic time frame.

Some paleoclimatologists and historians claim that the pleasant conditions of the MWP allowed the settlements in Iceland and Greenland to prosper and Norse explorers to venture to the coasts of Labrador and Newfoundland to hunt and fish.

So why do you believe in what paleoclimatologists say?

Using evidence garnered from samples of glacial cores and deep sea sediment, paleoclimatologists can find patterns in the natural changes of the past and use them to predict future changes.

The study may give scientists a better understanding of how changing dust levels relate to climate by providing inputs for climate models, David McGee, an MIT paleoclimatologist and lead study author, said in a statement.

«We have trillions of dollars of infrastructure in cities along the coast alone,» said White, a geochemist and paleoclimatologist at the University of Colorado.

Rather than seeing global anomalies, many paleoclimatologists subscribe to the conclusions of Phil Jones of the University of East Anglia, Michael Mann of the University of Virginia and their colleagues, who began in 1998 to quantitatively splice together the proxy records.