dc.contributor.author | Hetzinger, S. | |
dc.contributor.author | Halfar, J. | |
dc.contributor.author | Zack, T | |
dc.contributor.author | Mecking, Jennifer V. | |
dc.contributor.author | Kunz, B.E. | |
dc.contributor.author | Jacob, D.E. | |
dc.contributor.author | Adey, Walter H. | |
dc.date.accessioned | 2016-08-01T07:08:13Z | |
dc.date.available | 2016-08-01T07:08:13Z | |
dc.date.issued | 2013 | |
dc.Published | Scientific Reports 2013, 3:1761 | eng |
dc.identifier.issn | 2045-2322 | en_US |
dc.identifier.uri | https://hdl.handle.net/1956/12361 | |
dc.description.abstract | During the past decades climate and freshwater dynamics in the northwestern North Atlantic have undergone major changes. Large-scale freshening episodes, related to polar freshwater pulses, have had a strong influence on ocean variability in this climatically important region. However, little is known about variability before 1950, mainly due to the lack of long-term high-resolution marine proxy archives. Here we present the first multidecadal-length records of annually resolved Ba/Ca variations from Northwest Atlantic coralline algae. We observe positive relationships between algal Ba/Ca ratios from two Newfoundland sites and salinity observations back to 1950. Both records capture episodical multi-year freshening events during the 20th century. Variability in algal Ba/Ca is sensitive to freshwater-induced changes in upper ocean stratification, which affect the transport of cold, Ba-enriched deep waters onto the shelf (highly stratified equals less Ba/Ca). Algal Ba/Ca ratios therefore may serve as a new resource for reconstructing past surface ocean freshwater changes. | en_US |
dc.language.iso | eng | eng |
dc.publisher | Nature Publishing Group | en_US |
dc.rights | Attribution-NonCommercial-NoDerivs CC BY-NC-ND | eng |
dc.rights.uri | http://creativecommons.org/licenses/by-nc-nd/3.0/ | eng |
dc.title | Coralline algal Barium as indicator for 20th century northwestern North Atlantic surface ocean freshwater variability | en_US |
dc.type | Peer reviewed | |
dc.type | Journal article | |
dc.date.updated | 2016-04-11T09:15:12Z | |
dc.description.version | publishedVersion | en_US |
dc.identifier.doi | https://doi.org/10.1038/srep01761 | |
dc.identifier.cristin | 1038392 | |