In the central parts of the large polar ice sheets ice is formed by dry sintering of cold snow. The analyses of air extracted from bubbles of well dated ice samples from such locations, allow to determine the composition of the atmosphere at the time of ice formation. Of special interest are the two dominant greenhouse gases carbon dioxide and methane. The methane concentrations are very reproducible and represent the atmospheric concentration at the time of ice formation with a good accuracy. The records show unexpected variations of this concentration during the glacial epoch as well as during the Holocene. The concentration differences measured on ice cores from Greenland and Antarctica allow to determine concentration differences betwee...
Analyses of atmospheric air extracted from air bubbles in polar glacier ice provide a measure of pas...
Analysis of air extracted from bubbles of polar ice showed the anthropogenic increase of atmospheric...
The composition of air in bubbles of ice reveals important information on the composition of the atm...
In the central parts of the large polar ice sheets ice is formed by dry sintering of cold snow. The ...
Air in the bubbles of polar ice has in principal the same composition as the atmospheric air at the ...
Information on the history of the atmospheric CO2 content and the 12C /12 and 14C/C ratios is record...
Information on the history of the atmospheric CO2 content and the 13C/12 and 14C/C ratios is recorde...
Analysis of impurities entrapped in natural ice is the most promising method for reconstructing the ...
Analyses of air extracted from polar ice cores are the most straightforward method of reconstructing...
Analyses of air extracted from polar ice cores are the most straightforward method of reconstructing...
CO2 ice-core records show an increase in the atmospheric concentration of 80–100 parts per million b...
Recent measurements (1,2) on ice samples from Camp Century (Greenland, 77°10'N, 61°08'W), Byrd Stati...
One of the great challenges in climate research is to investigate the principal mechanisms that cont...
Detailed CO2 measurements on ice cores from Greenland and Antarctica show different mean CO2 concent...
The analysis of air bubbles trapped in polar ice has permitted the reconstruction of past atmospheri...
Analyses of atmospheric air extracted from air bubbles in polar glacier ice provide a measure of pas...
Analysis of air extracted from bubbles of polar ice showed the anthropogenic increase of atmospheric...
The composition of air in bubbles of ice reveals important information on the composition of the atm...
In the central parts of the large polar ice sheets ice is formed by dry sintering of cold snow. The ...
Air in the bubbles of polar ice has in principal the same composition as the atmospheric air at the ...
Information on the history of the atmospheric CO2 content and the 12C /12 and 14C/C ratios is record...
Information on the history of the atmospheric CO2 content and the 13C/12 and 14C/C ratios is recorde...
Analysis of impurities entrapped in natural ice is the most promising method for reconstructing the ...
Analyses of air extracted from polar ice cores are the most straightforward method of reconstructing...
Analyses of air extracted from polar ice cores are the most straightforward method of reconstructing...
CO2 ice-core records show an increase in the atmospheric concentration of 80–100 parts per million b...
Recent measurements (1,2) on ice samples from Camp Century (Greenland, 77°10'N, 61°08'W), Byrd Stati...
One of the great challenges in climate research is to investigate the principal mechanisms that cont...
Detailed CO2 measurements on ice cores from Greenland and Antarctica show different mean CO2 concent...
The analysis of air bubbles trapped in polar ice has permitted the reconstruction of past atmospheri...
Analyses of atmospheric air extracted from air bubbles in polar glacier ice provide a measure of pas...
Analysis of air extracted from bubbles of polar ice showed the anthropogenic increase of atmospheric...
The composition of air in bubbles of ice reveals important information on the composition of the atm...