Coralline alga reveals first marine record of subarctic North Pacific climate change
While recent changes in subarctic North Pacific climate had dramatic effects on ecosystems and fishery yields, past climate dynamics and teleconnection patterns are poorly understood due to the absence of century-long high-resolution marine records. We present the first 117-year long annually resolv...
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2007
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Online Access: | https://oceanrep.geomar.de/id/eprint/3429/ https://oceanrep.geomar.de/id/eprint/3429/1/grl22722.pdf https://doi.org/10.1029/2006GL028811 |
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ftoceanrep:oai:oceanrep.geomar.de:3429 2024-09-15T17:36:26+00:00 Coralline alga reveals first marine record of subarctic North Pacific climate change Halfar, J. Steneck, R. Schöne, B. Moore, G. W. K. Joachimski, M. Kronz, A. Fietzke, Jan Estes, J. 2007 text https://oceanrep.geomar.de/id/eprint/3429/ https://oceanrep.geomar.de/id/eprint/3429/1/grl22722.pdf https://doi.org/10.1029/2006GL028811 en eng AGU (American Geophysical Union) https://oceanrep.geomar.de/id/eprint/3429/1/grl22722.pdf Halfar, J., Steneck, R., Schöne, B., Moore, G. W. K., Joachimski, M., Kronz, A., Fietzke, J. and Estes, J. (2007) Coralline alga reveals first marine record of subarctic North Pacific climate change. Open Access Geophysical Research Letters, 34 . L07702. DOI 10.1029/2006GL028811 <https://doi.org/10.1029/2006GL028811>. doi:10.1029/2006GL028811 info:eu-repo/semantics/openAccess Article PeerReviewed 2007 ftoceanrep https://doi.org/10.1029/2006GL028811 2024-09-04T05:04:40Z While recent changes in subarctic North Pacific climate had dramatic effects on ecosystems and fishery yields, past climate dynamics and teleconnection patterns are poorly understood due to the absence of century-long high-resolution marine records. We present the first 117-year long annually resolved marine climate history from the western Bering Sea/Aleutian Island region using information contained in the calcitic skeleton of the long-lived crustose coralline red alga Clathromorphum nereostratum, a previously unused climate archive. The skeletal δ18O-time series indicates significant warming and/or freshening of surface waters after the middle of the 20th century. Furthermore, the time series is spatiotemporally correlated with Pacific Decadal Oscillation (PDO) and tropical El Niño-Southern Oscillation (ENSO) indices. Even though the western Bering Sea/Aleutian Island region is believed to be outside the area of significant marine response to ENSO, we propose that an ENSO signal is transmitted via the Alaskan Stream from the Eastern North Pacific, a region of known ENSO teleconnections. Article in Journal/Newspaper Aleutian Island Bering Sea Subarctic OceanRep (GEOMAR Helmholtz Centre für Ocean Research Kiel) Geophysical Research Letters 34 7 |
institution |
Open Polar |
collection |
OceanRep (GEOMAR Helmholtz Centre für Ocean Research Kiel) |
op_collection_id |
ftoceanrep |
language |
English |
description |
While recent changes in subarctic North Pacific climate had dramatic effects on ecosystems and fishery yields, past climate dynamics and teleconnection patterns are poorly understood due to the absence of century-long high-resolution marine records. We present the first 117-year long annually resolved marine climate history from the western Bering Sea/Aleutian Island region using information contained in the calcitic skeleton of the long-lived crustose coralline red alga Clathromorphum nereostratum, a previously unused climate archive. The skeletal δ18O-time series indicates significant warming and/or freshening of surface waters after the middle of the 20th century. Furthermore, the time series is spatiotemporally correlated with Pacific Decadal Oscillation (PDO) and tropical El Niño-Southern Oscillation (ENSO) indices. Even though the western Bering Sea/Aleutian Island region is believed to be outside the area of significant marine response to ENSO, we propose that an ENSO signal is transmitted via the Alaskan Stream from the Eastern North Pacific, a region of known ENSO teleconnections. |
format |
Article in Journal/Newspaper |
author |
Halfar, J. Steneck, R. Schöne, B. Moore, G. W. K. Joachimski, M. Kronz, A. Fietzke, Jan Estes, J. |
spellingShingle |
Halfar, J. Steneck, R. Schöne, B. Moore, G. W. K. Joachimski, M. Kronz, A. Fietzke, Jan Estes, J. Coralline alga reveals first marine record of subarctic North Pacific climate change |
author_facet |
Halfar, J. Steneck, R. Schöne, B. Moore, G. W. K. Joachimski, M. Kronz, A. Fietzke, Jan Estes, J. |
author_sort |
Halfar, J. |
title |
Coralline alga reveals first marine record of subarctic North Pacific climate change |
title_short |
Coralline alga reveals first marine record of subarctic North Pacific climate change |
title_full |
Coralline alga reveals first marine record of subarctic North Pacific climate change |
title_fullStr |
Coralline alga reveals first marine record of subarctic North Pacific climate change |
title_full_unstemmed |
Coralline alga reveals first marine record of subarctic North Pacific climate change |
title_sort |
coralline alga reveals first marine record of subarctic north pacific climate change |
publisher |
AGU (American Geophysical Union) |
publishDate |
2007 |
url |
https://oceanrep.geomar.de/id/eprint/3429/ https://oceanrep.geomar.de/id/eprint/3429/1/grl22722.pdf https://doi.org/10.1029/2006GL028811 |
genre |
Aleutian Island Bering Sea Subarctic |
genre_facet |
Aleutian Island Bering Sea Subarctic |
op_relation |
https://oceanrep.geomar.de/id/eprint/3429/1/grl22722.pdf Halfar, J., Steneck, R., Schöne, B., Moore, G. W. K., Joachimski, M., Kronz, A., Fietzke, J. and Estes, J. (2007) Coralline alga reveals first marine record of subarctic North Pacific climate change. Open Access Geophysical Research Letters, 34 . L07702. DOI 10.1029/2006GL028811 <https://doi.org/10.1029/2006GL028811>. doi:10.1029/2006GL028811 |
op_rights |
info:eu-repo/semantics/openAccess |
op_doi |
https://doi.org/10.1029/2006GL028811 |
container_title |
Geophysical Research Letters |
container_volume |
34 |
container_issue |
7 |
_version_ |
1810489603418750976 |