Sentences with phrase «ancient ice cores»

A discussion of the methods for determining the ages of ancient ice cores.

Ancient ice core samples show that temperature changes and CO2 levels are not correlated.

To work out how long - term climate variability changed over the period, the researchers analysed data taken from ancient ice cores, marine sediments and animal and plant fossils stretching back thousands of years.

Detailed ana / lysis of acient ice cores can be found in the paper: «Microbial Ana.lyses of Ancient Ice Core Sections from Greenland and Antarctica» — Caitlin Knowlton, Ram Veerapaneni, Tom D'Elia, and Scott O. Roger

Video protocol for ancient ice cores: Removal of Exogenous Materials from the Outer Portion of Frozen Cores to Investigate the Ancient Biological Communities Harbored Inside — Robyn A. Barbato — JOVE

But the latest research into sulphur - producing algae, ancient ice cores, and sea sediments from the North Atlantic region could help climatologists

Previous studies suggest that natural geologic methane emissions of the past are at least as high as natural emissions today, so studying the ancient ice cores allows researchers to accurately determine the upper limit of geologic emissions, separate from their anthropogenic counterparts.

KERRY: It's a conclusion based on established physics and on evidence gathered from satellite data, ancient ice cores, temperature stations, and fossilized trees and corals.

They measured evidence of atmospheric carbon dioxide, trapped in ancient ice cores, and found a lower limit.