Sentences with phrase «ice core archive»

Investigators who wish to contribute their data to our Ice Core archive can find information on contributing below.

This mission represented the first stage in demonstrating the feasibility of the «ice core archive» project.

Not exact matches

«We also found the chemical anomaly in ice from two other Antarctic ice cores including archived samples from the Byrd Core available from the University of Copenhagen and ice from Taylor Glacier in the Antarctic Dry Valleys,» said Nathan Chellman, a graduate student working in McConnell's laboratory.

«Ice cores contain little air bubbles and, thus, represent the only direct archive of the composition of the past atmosphere,» says Hubertus Fischer, an experimental climate physics professor at the University of Bern in Switzerland and lead author of the study.

The GRIP ice core is a unique archive of past climate and atmospheric chemistry which will improve climate models.

Ice core records are rich archives of the climate history during glacial - interglacial cycles over timescales of up to ~ 800 kyr before the current age.

20th - Century doubling in dust archived in an Antarctic Peninsula ice core parallels climate change and desertification in South America.

The potential for confusion on any large science archive like this is always important to watch for — especially here where several different dating systems (tree rings, ice cores, lake sediments, ocean sediments) are being correlated.

The biggest uncertainties lies in the interpretation of the radionuclide records that can be measured in natural archives such as ice cores in the case of 10Be or tree rings in the case of 14C.

He said that Ohio State was accumulating an archive of sections of ice cores in a complex of huge freezers.

«Ice cores are an excellent archive,» says Mosley - Thompson, noting that in a few places in the world ice is more or less permanent and contains a precise, datable record of the chemical and physical properties of the atmospheIce cores are an excellent archive,» says Mosley - Thompson, noting that in a few places in the world ice is more or less permanent and contains a precise, datable record of the chemical and physical properties of the atmospheice is more or less permanent and contains a precise, datable record of the chemical and physical properties of the atmosphere.

Based on proxy records from ice, terrestrial and marine archives, the LIG is characterized by an atmospheric CO2 concentration of about 290 ppm, i.e., similar to the pre-industrial (PI) value13, mean air temperatures in Northeast Siberia that were about 9 °C higher than today14, air temperatures above the Greenland NEEM ice core site of about 8 ± 4 °C above the mean of the past millennium15, North Atlantic sea - surface temperatures of about 2 °C higher than the modern (PI) temperatures12, 16, and a global sea level 5 — 9 m above the present sea level17.

The computations show similar long - term variations with the global radionuclides production records from terrestrial archives such as tree rings and ice cores which validate the approach.

There is more evidence of abrupt and violent change, most of it culled from ice cores, lake sediments, tree rings and other natural archives of climate.

The modelled series are next compared with the records from terrestrial archives such as tree rings (Roth & Joos 2013) and ice cores (Berggren et al. 2009).

However, both the driving force and the climate reconstructions over the pre-industrial era are based on the analysis of the natural archives of climate sensitive quantities, such as the growth of trees and seashells, and the changes of chemical, biological, and isotopic compositions in lake sediments and ice core samples.

It was the first comprehensive study combining data from many different archives of temperature including tree rings, ice cores, and coral reefs.

The World Data Center (WDC) for Paleoclimatology maintains archives of ice core data from polar and low - latitude mountain glaciers and ice caps throughout the world.

Scientists measure these ratios in the layers of many different natural archives, such as ice cores, cave formations, tree rings, corals, and even ocean and lake sediments.

Five Weird Archives That Scientists Use to Study Past Climates When tree rings, ice cores, and cave formations can't cut it, try your luck with whale earwax or bat poop.

The U.S. National Ice Core Laboratory, in Lakewood, Colorado, is the U.S. storage facility, which archives ice cores from all over the worIce Core Laboratory, in Lakewood, Colorado, is the U.S. storage facility, which archives ice cores from all over the worice cores from all over the world.

It is well known that the Sun plays the fundamental role as our energy source... To date, the only proxy providing information about the solar variability on millennial time scales are cosmogenic radionuclides stored in natural archives such as ice cores.

For earlier times, we adopt Greenland temperature estimated as follows (33): For the period 128,700 B.P. to 340,000 B.P., this temperature was derived from a proxy based on Antarctic ice core methane data using the relation T = − 51.5 + 0.0802 [CH4 (ppb)-RSB- from a linear regression of Greenland temperature estimates on Antarctic methane for the period 150 B.P. to 122,400 B.P.. For the remaining period of 122,400 B.P. to 128,700 B.P., data from a variety of climate archives indicate that Greenland warming lags that of Antarctica, with rapid warming commencing around 128.5 ky B.P. in the northern North Atlantic and reaching full interglacial levels by about 127 ky B.P. (51).

Steve McIntyre, Would a direct comparison of the now archived Law Dome data and the Greenland ice core data be informative?

To gain a longer view, Dr Jones and her colleagues used a compilation of records from natural archives such as ice cores from the Antarctic ice sheet, which show how the region's climate has changed over the last 200 years.

Estimates of surface temperature changes further back in time must therefore make use of the few long available instrumental records or historical documents and natural archives or «climate proxy» indicators, such as tree rings, corals, ice cores and lake sediments, and historical documents to reconstruct patterns of past surface temperature change.

The lack of widespread instrumental climate records introduces the need for the use of natural climate archives from «proxy» data such as tree - rings, corals, speleothems and ice cores, as well as documentary evidence to reconstruct climate in past centuries (see Jones et al. 2009 for a review).