Multi-specimen and multi-site calibration of Aleutian coralline algal Mg/Ca to sea surface temperature
Higher latitude oceanic and climatic reconstructions are needed to distinguish natural climate variability from anthropogenic warming in regions projected to experience significant increases in temperature during this century. Clathromorphum nereostra turn is a long-lived coralline alga abundant alo...
Published in: | Geochimica et Cosmochimica Acta |
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Main Authors: | , , , , , |
Format: | Article in Journal/Newspaper |
Language: | English |
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Elsevier
2014
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Online Access: | https://oceanrep.geomar.de/id/eprint/24384/ https://oceanrep.geomar.de/id/eprint/24384/1/Williams%20et%20al.%202014_accepted.pdf https://oceanrep.geomar.de/id/eprint/24384/7/mmc1.pdf https://oceanrep.geomar.de/id/eprint/24384/8/1-s2.0-S0016703714002282-main.pdf https://doi.org/10.1016/j.gca.2014.04.006 |
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ftoceanrep:oai:oceanrep.geomar.de:24384 2023-05-15T15:43:54+02:00 Multi-specimen and multi-site calibration of Aleutian coralline algal Mg/Ca to sea surface temperature Williams, B. Halfar, J. DeLong, K. L. Hetzinger, Steffen Steneck, R. S. Jacob, D. E. 2014-08-15 text https://oceanrep.geomar.de/id/eprint/24384/ https://oceanrep.geomar.de/id/eprint/24384/1/Williams%20et%20al.%202014_accepted.pdf https://oceanrep.geomar.de/id/eprint/24384/7/mmc1.pdf https://oceanrep.geomar.de/id/eprint/24384/8/1-s2.0-S0016703714002282-main.pdf https://doi.org/10.1016/j.gca.2014.04.006 en eng Elsevier https://oceanrep.geomar.de/id/eprint/24384/1/Williams%20et%20al.%202014_accepted.pdf https://oceanrep.geomar.de/id/eprint/24384/7/mmc1.pdf https://oceanrep.geomar.de/id/eprint/24384/8/1-s2.0-S0016703714002282-main.pdf Williams, B., Halfar, J., DeLong, K. L., Hetzinger, S. , Steneck, R. S. and Jacob, D. E. (2014) Multi-specimen and multi-site calibration of Aleutian coralline algal Mg/Ca to sea surface temperature. Open Access Geochimica et Cosmochimica Acta, 139 . pp. 190-204. DOI 10.1016/j.gca.2014.04.006 <https://doi.org/10.1016/j.gca.2014.04.006>. doi:10.1016/j.gca.2014.04.006 info:eu-repo/semantics/openAccess Article PeerReviewed 2014 ftoceanrep https://doi.org/10.1016/j.gca.2014.04.006 2023-04-07T15:13:02Z Higher latitude oceanic and climatic reconstructions are needed to distinguish natural climate variability from anthropogenic warming in regions projected to experience significant increases in temperature during this century. Clathromorphum nereostra turn is a long-lived coralline alga abundant along the Aleutian archipelago that records seasonal to centennial fluctuations in seawater temperatures in its high-Mg calcite skeleton. Thus, C. nereostratum is an important proxy archive to reconstruct past seawater temperature variability in this data-poor subarctic region. Here, we measured magnesium to calcium ratios (Mg/Ca) by laser ablation-inductively coupled plasma-mass spectrometry (LA-ICP-MS) along the growth axis in six live-collected specimens from three islands in the Aleutian archipelago to assess Mg/Ca reproducibility and to calibrate algal Mg/Ca against modern gridded sea surface temperature (SST) data products. The master Mg/Ca SST transfer function, determined by averaging the algal Mg/Ca SST from each island (n = 6), resulted in a reconstruction error of +/-0.45 degrees C, a 31-46% reduction in error compared to the reconstruction error for a single alga. The master algal-SST record interpolated to monthly and annual resolution significantly varied with gridded SST data products (r(2) = 0.98, p < 0.0001, n = 517 and r(2) = .27, p < 0.0003, n = 44, respectively) for the period from 1960 to 2003. Therefore, coralline algal Mg/Ca-derived SST reconstructions record absolute changes in past SST variability in the Aleutian archipelago. The transfer functions developed here can be applied to Mg/Ca records generated from long-lived specimens of C. nereostra turn to reconstruct northern North Pacific and Bering Sea SST variability for the past several hundred years. Article in Journal/Newspaper Bering Sea Subarctic OceanRep (GEOMAR Helmholtz Centre für Ocean Research Kiel) Bering Sea Pacific Geochimica et Cosmochimica Acta 139 190 204 |
institution |
Open Polar |
collection |
OceanRep (GEOMAR Helmholtz Centre für Ocean Research Kiel) |
op_collection_id |
ftoceanrep |
language |
English |
description |
Higher latitude oceanic and climatic reconstructions are needed to distinguish natural climate variability from anthropogenic warming in regions projected to experience significant increases in temperature during this century. Clathromorphum nereostra turn is a long-lived coralline alga abundant along the Aleutian archipelago that records seasonal to centennial fluctuations in seawater temperatures in its high-Mg calcite skeleton. Thus, C. nereostratum is an important proxy archive to reconstruct past seawater temperature variability in this data-poor subarctic region. Here, we measured magnesium to calcium ratios (Mg/Ca) by laser ablation-inductively coupled plasma-mass spectrometry (LA-ICP-MS) along the growth axis in six live-collected specimens from three islands in the Aleutian archipelago to assess Mg/Ca reproducibility and to calibrate algal Mg/Ca against modern gridded sea surface temperature (SST) data products. The master Mg/Ca SST transfer function, determined by averaging the algal Mg/Ca SST from each island (n = 6), resulted in a reconstruction error of +/-0.45 degrees C, a 31-46% reduction in error compared to the reconstruction error for a single alga. The master algal-SST record interpolated to monthly and annual resolution significantly varied with gridded SST data products (r(2) = 0.98, p < 0.0001, n = 517 and r(2) = .27, p < 0.0003, n = 44, respectively) for the period from 1960 to 2003. Therefore, coralline algal Mg/Ca-derived SST reconstructions record absolute changes in past SST variability in the Aleutian archipelago. The transfer functions developed here can be applied to Mg/Ca records generated from long-lived specimens of C. nereostra turn to reconstruct northern North Pacific and Bering Sea SST variability for the past several hundred years. |
format |
Article in Journal/Newspaper |
author |
Williams, B. Halfar, J. DeLong, K. L. Hetzinger, Steffen Steneck, R. S. Jacob, D. E. |
spellingShingle |
Williams, B. Halfar, J. DeLong, K. L. Hetzinger, Steffen Steneck, R. S. Jacob, D. E. Multi-specimen and multi-site calibration of Aleutian coralline algal Mg/Ca to sea surface temperature |
author_facet |
Williams, B. Halfar, J. DeLong, K. L. Hetzinger, Steffen Steneck, R. S. Jacob, D. E. |
author_sort |
Williams, B. |
title |
Multi-specimen and multi-site calibration of Aleutian coralline algal Mg/Ca to sea surface temperature |
title_short |
Multi-specimen and multi-site calibration of Aleutian coralline algal Mg/Ca to sea surface temperature |
title_full |
Multi-specimen and multi-site calibration of Aleutian coralline algal Mg/Ca to sea surface temperature |
title_fullStr |
Multi-specimen and multi-site calibration of Aleutian coralline algal Mg/Ca to sea surface temperature |
title_full_unstemmed |
Multi-specimen and multi-site calibration of Aleutian coralline algal Mg/Ca to sea surface temperature |
title_sort |
multi-specimen and multi-site calibration of aleutian coralline algal mg/ca to sea surface temperature |
publisher |
Elsevier |
publishDate |
2014 |
url |
https://oceanrep.geomar.de/id/eprint/24384/ https://oceanrep.geomar.de/id/eprint/24384/1/Williams%20et%20al.%202014_accepted.pdf https://oceanrep.geomar.de/id/eprint/24384/7/mmc1.pdf https://oceanrep.geomar.de/id/eprint/24384/8/1-s2.0-S0016703714002282-main.pdf https://doi.org/10.1016/j.gca.2014.04.006 |
geographic |
Bering Sea Pacific |
geographic_facet |
Bering Sea Pacific |
genre |
Bering Sea Subarctic |
genre_facet |
Bering Sea Subarctic |
op_relation |
https://oceanrep.geomar.de/id/eprint/24384/1/Williams%20et%20al.%202014_accepted.pdf https://oceanrep.geomar.de/id/eprint/24384/7/mmc1.pdf https://oceanrep.geomar.de/id/eprint/24384/8/1-s2.0-S0016703714002282-main.pdf Williams, B., Halfar, J., DeLong, K. L., Hetzinger, S. , Steneck, R. S. and Jacob, D. E. (2014) Multi-specimen and multi-site calibration of Aleutian coralline algal Mg/Ca to sea surface temperature. Open Access Geochimica et Cosmochimica Acta, 139 . pp. 190-204. DOI 10.1016/j.gca.2014.04.006 <https://doi.org/10.1016/j.gca.2014.04.006>. doi:10.1016/j.gca.2014.04.006 |
op_rights |
info:eu-repo/semantics/openAccess |
op_doi |
https://doi.org/10.1016/j.gca.2014.04.006 |
container_title |
Geochimica et Cosmochimica Acta |
container_volume |
139 |
container_start_page |
190 |
op_container_end_page |
204 |
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1766378123056644096 |