Gaseous components in the atmosphere and the historic record revealed by ice cores

Stauffer, B.; Oeschger, H. (1985). Gaseous components in the atmosphere and the historic record revealed by ice cores. Annals of glaciology, 7, pp. 54-59. International Glaciological Society 10.3189/S0260305500005905

[img] Text
stauffer85ag_a.pdf - Published Version
Restricted to registered users only
Available under License Publisher holds Copyright.

Download (5MB) | Request a copy

The composition of air in bubbles of ice reveals important information on the composition of the atmosphere at the time at which the ice was formed. The enclosed air has essentially an atmospheric composition if the ice formation occurred by dry sintering of snow and firn at low temperatures. The history of atmospheric CO2 concentration is of special interest due to its present increase and its climatic implications. Currently, CO2 analysis of air extracted from ice cores seems the best and most direct method of determining the natural CO2 concentration before 1950 and possible pre-industrial variations. Analyses of ice samples representing the past 40 ka show that there were significant changes in concentration of atmospheric CO2 at the end, and probably during part, of the last glaciation. δ13C measurements on CO2 extracted from ice cores can indicate possible mechanisms causing these changes in the concentration of atmospheric CO2.

Item Type:

Conference or Workshop Item (Paper)

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:

0260-3055

Publisher:

International Glaciological Society

Language:

English

Submitter:

BORIS Import 2

Date Deposited:

14 Oct 2021 09:31

Last Modified:

14 Oct 2021 09:31

Publisher DOI:

10.3189/S0260305500005905

BORIS DOI:

10.48350/158755

URI:

https://boris.unibe.ch/id/eprint/158755

Actions (login required)

Edit item Edit item
Provide Feedback