Past atmospheric composition and climate, gas parameters measured on ice cores

Berner, W.; Stauffer, B.; Oeschger, H. (1978). Past atmospheric composition and climate, gas parameters measured on ice cores. Nature, 276(5683), pp. 53-55. Macmillan Journals Ltd. 10.1038/276053a0

[img] Text
276053a0.pdf - Published Version
Restricted to registered users only
Available under License Publisher holds Copyright.

Download (758kB) | Request a copy

Variations of physical and chemical properties of ice cores have been observed by many authors (1–3). These variations could be attributed to temperature effects, different origins of moisture and changes in concentrations and isotopic composition of atmospheric constituents. We report here data from parameters measured in a section of the Camp Century ice core from Greenland. Gas content and composition were measured systematically in a continuous set of samples covering ∼2 yr of precipitation. The data are compared with measurements of 18O/16O ratio, electrical conductivity, pH values and crystal size. The aim of the investigation was to determine which parameters show random and which seasonal variations. Special consideration is given to the CO2 content, which is higher in the gas extracted from natural ice than in the atmosphere (4) and shows short-term variations which cannot be explained by variations of the atmospheric CO2 content alone. These probably reflect variations in the meteorological conditions at the time of precipitation. Meterological conditions may influence other parameters of the ice in a similar way. If such correlations could be found, one might be able to correct the observed CO2 variations for the meterological effect and sort out the effect related to changes in the atmospheric CO2 content. Measurements of the CO2 content of ice cores of different age could then be used to reconstruct the history of the atmospheric CO2 content from present to 100,000 yr BP.

Item Type:

Journal Article (Original Article)

Division/Institute:

08 Faculty of Science > Physics Institute
08 Faculty of Science > Physics Institute > Climate and Environmental Physics

UniBE Contributor:

Stauffer, Bernhard

Subjects:

500 Science > 530 Physics

ISSN:

0028-0836

Publisher:

Macmillan Journals Ltd.

Language:

English

Submitter:

BORIS Import 2

Date Deposited:

18 Aug 2021 12:00

Last Modified:

22 Aug 2021 02:59

Publisher DOI:

10.1038/276053a0

BORIS DOI:

10.48350/158261

URI:

https://boris.unibe.ch/id/eprint/158261

Actions (login required)

Edit item Edit item
Provide Feedback