Sentences with phrase «analyzing ice cores»

You then repeat your baseless claim that the methodology used in analyzing the ice cores is poor.

Spencer Weart, in his book «The discovery of Global Warming» mentions it took two decades to develop reliable methods of giving plausible results when analyzing ice cores and states «The trick was to clean an ice sample scrupulously, crush it in a vacuum, and quickly measure what came out».

This project brings together senior scientists from the Desert Research Institute, the University of Colorado, the University of Southern Mississippi, the University Libre de Brussels, and the University of Alaska Fairbanks to tackle these problems as a team to create transformative new approaches to analyzing ice cores from polythermal valley glaciers to create unique records of value to a broad - base of scientists and policy makers.

Researchers at Princeton University analyzed ice cores collected in Greenland and Antarctica to determine levels of atmospheric oxygen over the last 800,000 years.

The researchers analyzed the ice cores for different trace elements — such as lead, antimony, arsenic, bismuth and molybdenum — that may have been floating around the atmosphere during different points in time.

To see how far back humans were producing significant amounts of methane, Sapart and her colleagues analyzed ice cores from Greenland.

He said scientists have been able to correlate changes in atmospheric temperature with changes in levels of carbon dioxide going back more than 500,000 years by analyzing ice core samples and the CO2 bubbles trapped inside.

I also collect and analyze ice cores from alpine glaciers to learn about the history of temperature and snow accumulation.

The researchers routinely analyze ice cores for a host of indicators — particulates, dust, oxygen isotopes, etc. — that can paint a picture of past climate in that region.

Not exact matches

IceBridge's flight lines often intersect ice core sites where other scientists have analyzed the ice's chemical composition to map and date layers in the ice.

One such ice core, known as the West Antarctic Ice Sheet Divide (WAIS Divide) core was drilled to a depth of more than two miles (3,405 meters), and much of it was analyzed in the DRI Ultra-Trace Laboratory for more than 30 different elements and chemical speciice core, known as the West Antarctic Ice Sheet Divide (WAIS Divide) core was drilled to a depth of more than two miles (3,405 meters), and much of it was analyzed in the DRI Ultra-Trace Laboratory for more than 30 different elements and chemical speciIce Sheet Divide (WAIS Divide) core was drilled to a depth of more than two miles (3,405 meters), and much of it was analyzed in the DRI Ultra-Trace Laboratory for more than 30 different elements and chemical species.

Recent publications analyzing the Russian ice cores have suggested the presence of heat - loving microorganisms called thermophiles, suggesting hot geothermal vents like those in the ocean may exist at the bottom of the lake.

A state - of - the - art continuous ice core analytical system was used to analyze ~ 3 cm by ~ 3 cm longitudinal samples from ~ 1300 to ~ 3404 m depth in the recently collected WAIS Divide deep ice core from West Antarctica.

A state - of - the - art continuous ice core analytical system was used to analyze samples from ~ 1.5 to ~ 577 m depth in the recently collected WAIS Divide deep ice core from West Antarctica.

A state - of - the - art continuous ice core analytical system was used to analyze samples from 0 to ~ 130 m depth of the recently collected intermediate core WDC05Q from West Antarctica.

A state - of - the - art continuous ice core analytical system was used to analyze samples from the firn portion (0 to ~ 70 m depth) of the recently collected intermediate core WDC05A from West Antarctica.

These intervals are often analyzed for volcanic sulfate by ice core scientists.

Neff also noted that most of the ice cores were collected in the last 20 years, meaning trends can not be analyzed up to present day, when we'd expect the imprint of climate change to become most obvious.

«Although this paper will likely become a classic compilation of our view in 2017, the 79 ice cores analyzed are spatially restricted,» he told Earther, noting that West Antarctic cores are biased toward the highest ground, and that East Antarctic record is biased because of a cluster of cores in Dronning Maud Land, a vast chunk of ice annexed by Norway in 1939.

For six weeks every summer between 1989 and 1993, Alley and other scientists pushed columns of ice along the science assembly line, labeling and analyzing the snow for information about past climate, then packaging it to be sent for further analysis and cold storage at the National Ice Core Laboratory in Denver, Coloraice along the science assembly line, labeling and analyzing the snow for information about past climate, then packaging it to be sent for further analysis and cold storage at the National Ice Core Laboratory in Denver, ColoraIce Core Laboratory in Denver, Colorado.

I've just returned from the deep field site at Aurora Basin where the Australians are drilling a new 400 - meter ice core which we will analyze in my lab in Reno.

I've also analyzed data (not conclusions, but raw data) relating to paleoclimate reconstructions such as tree rings, ice cores, and (my personal favorite) borehole temperature profiles.

Finally, I've throughly analyzed the GISP2 ice core record of periodic and quasi-periodic phenomena.

For six weeks every summer between 1989 and 1993, Alley and other scientists pushed columns of ice along the science assembly line, labeling and analyzing the snow for information about past climate, then packaging it to be sent for further analysis and cold storage at the National Ice Core Laboratory in Denver, Coloraice along the science assembly line, labeling and analyzing the snow for information about past climate, then packaging it to be sent for further analysis and cold storage at the National Ice Core Laboratory in Denver, ColoraIce Core Laboratory in Denver, Colorado.

I also found a paper analyzing sulfate from a different Greenland ice core for volcanic eruption signals: http://epic.awi.de/Publications/Big2001a.pdf

Researchers led by Baiqing Xu of the Chinese Academy drilled and analyzed five ice cores from various locations across the Tibetan Plateau, looking for black carbon (a key component of soot) as well as organic carbon.

This paper analyzes the 420,00 o year Antarctic Vostok ice core data comparing the CO2, CH4, sea level, and surface albedo changes do derive his empirical 3 °C per 4 W / m2 climate sensitivity from the ice core data.

Ice cores have bands of light and dark areas with traces of various substances, which can be analyzed as to composition and age, yielding important information about the environmental conditions throughout time.

report that ocean sediment cores containing an «undisturbed history of the past» have been analyzed for variations in PP over timescales that include the Little Ice Age... they determined that during the LIA the ocean off Peru had «low PP, diatoms and fish,» but that «at the end of the LIA, this condition changed abruptly to the low subsurface oxygen, eutrophic upwelling ecosystem that today produces more fish than any region of the world's oceans... write that «in coastal environments, PP, diatoms and fish and their associated predators are predicted to decrease and the microbial food web to increase under global warming scenarios,» citing Ito et al..

They plan to drill short ice core samples and analyze the past role of black carbon, including layers from 2012 (though Doherty points out that it may be difficult to tell how much black carbon was deposited then, rather than deposited in earlier years and concentrated by the melting).

This knowledge of the stratigraphy and other properties can be an asset when analyzing the hundreds of thousands of years of snowfall recorded in ice cores.

Once the ice cores from Greenland were analyzed in the 1980s, experts such as Willi Dansgaard and Hans Oeschger made us aware that big warmings or coolings had occurred in less than a decade.

For the South Pole Ice Core project, in which scientists drilled a core from 2014 to 2016 and continue the research today, Casey and her NASA colleagues helped analyze satellite, airborne and field data to select a place to drill the ice coIce Core project, in which scientists drilled a core from 2014 to 2016 and continue the research today, Casey and her NASA colleagues helped analyze satellite, airborne and field data to select a place to drill the ice cCore project, in which scientists drilled a core from 2014 to 2016 and continue the research today, Casey and her NASA colleagues helped analyze satellite, airborne and field data to select a place to drill the ice ccore from 2014 to 2016 and continue the research today, Casey and her NASA colleagues helped analyze satellite, airborne and field data to select a place to drill the ice coice corecore.

The new study gathered sea ice samples near Greenland in 2014 and 2015 that the researchers then analyzed in a lab, comparing them to previously gathered cores from there and elsewhere in the Arctic.

I don't think all ice cores were treated with some standard procedure and they were not analyzed by a single laboratory.

«[Siegenthaler et al. (2005)-RSB- analyzed CO2 and proxy temperature (äD, the ratio of deuterium to hydrogen) data derived from an ice core in Antarctica.

Ice core samples become very hard to analyze the further one goes back in time, so I am not sure exactly how good it is for determining climate in the deep past.

Has anyone taken recently deposited firn, mechanically compressed it to form ice, aged it for a while, then analyzed the ice using the present ice core analysis techniques to see if the results agree with the present atmosphere?

In this link https://bravenewclimate.com/2016/09/10/open-thread-26/#comment-470348 I briefly outline the results of an important paper which uses Liang causality, a statistical notion superior to the older Granger causality, to analyze the climate data, both ice core and recent, to obtain the expected result that CO2 Liang causes global warming in recent times but the opposite conclusion for the paleodata.