| Online-Ressource |
Verfasst von: | May, Barbara Luise [VerfasserIn]  |
| Wagenbach, Dietmar [VerfasserIn]  |
| Hoffmann, Helene [VerfasserIn]  |
| Legrand, M. [VerfasserIn]  |
| Preunkert, S. [VerfasserIn]  |
| Steier, P. [VerfasserIn]  |
Titel: | Constraints on the major sources of dissolved organic carbon in Alpine ice cores from radiocarbon analysis over the bomb-peak period |
Verf.angabe: | B. May, D. Wagenbach, H. Hoffmann, M. Legrand, S. Preunkert, and P. Steier |
E-Jahr: | 2013 |
Jahr: | 16 April 2013 |
Umfang: | 9 S. |
Fussnoten: | Gesehen am 25.11.2021 ; Dieser Artikel ist eine Ergänzung zu Guilhermet et al. [2013] doi:10.1002/jgrd.50201 und Legrand [2013] doi:10.1002/jgrd.50202 |
Titel Quelle: | Enthalten in: JGR. Atmospheres |
Ort Quelle: | Hoboken, NJ : Wiley, 2013 |
Jahr Quelle: | 2013 |
Band/Heft Quelle: | 118(2013), 8, Seite 3319-3327 |
ISSN Quelle: | 2169-8996 |
Abstract: | Radiocarbon (14C) has proven to be a powerful tool in distinguishing modern and fossil fuel sources contributing to organic aerosols. By applying this concept to ice core records of the dissolved organic carbon (DOC) fraction, we developed a setup dedicated to the extraction of DOC from Alpine ice core samples for 14C microanalysis. With respect to the difficulties and limitations of this analytical method, it is shown that a total process blank mass of (6 ± 3) μgC with a 14C signature of (0.71 ± 0.17) can be obtained, corresponding to a minimum sample size between 200 g for industrial and 800 g for pre-industrial ice. Radiocarbon analyses of eight DOC ice core samples from the high accumulation glacier Col du Dôme (European Alps) were mainly performed over the bomb-peak period. These data, being associated with snow deposition over the summer half-years, show an overall mean fossil contribution of (25 ± 9) %. Adaptation of the DO14C values to the atmospheric 14CO2 record revealed that the biogenic input to ice core DOC is associated with a fast recycling biospheric component, likely linked to a turnover time of less than 3 years. |
DOI: | doi:10.1002/jgrd.50200 |
URL: | Bitte beachten Sie: Dies ist ein Bibliographieeintrag. Ein Volltextzugriff für Mitglieder der Universität besteht hier nur, falls für die entsprechende Zeitschrift/den entsprechenden Sammelband ein Abonnement besteht oder es sich um einen OpenAccess-Titel handelt.
Volltext ; Verlag: https://doi.org/10.1002/jgrd.50200 |
| Volltext: https://agupubs.onlinelibrary.wiley.com/doi/abs/10.1002/jgrd.50200 |
| DOI: https://doi.org/10.1002/jgrd.50200 |
Datenträger: | Online-Ressource |
Sprache: | eng |
Bibliogr. Hinweis: | Ergänzung: Legrand, Michel: Major 20th century changes of the content and chemical speciation of organic carbon archived in Alpine ice cores |
Sach-SW: | Alpine ice core |
| biogenic sources |
| bomb peak |
| dissolved organic carbon |
| radiocarbon |
K10plus-PPN: | 1761630881 |
Verknüpfungen: | → Zeitschrift |
Constraints on the major sources of dissolved organic carbon in Alpine ice cores from radiocarbon analysis over the bomb-peak period / May, Barbara Luise [VerfasserIn]; 16 April 2013 (Online-Ressource)