Teleconnected ocean forcing of Western North American droughts and pluvials during the last millennium
Western North America (WNA) is rich in hydroclimate reconstructions, yet questions remain about the causes of decadal-to-multidecadal hydroclimate variability. Teleconnection patterns preserved in annually-resolved tree-ring reconstructed drought maps, and anomalies in a global network of proxy sea...
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ftarchimer:oai:archimer.ifremer.fr:60719 2023-05-15T17:33:45+02:00 Teleconnected ocean forcing of Western North American droughts and pluvials during the last millennium Routson, Cody C. Woodhouse, Connie A. Overpeck, Jonathan T. Betancourt, Julio L. Mckay, Nicholas P. 2016-08 application/pdf https://archimer.ifremer.fr/doc/00496/60719/65283.pdf https://archimer.ifremer.fr/doc/00496/60719/65284.xlsx https://archimer.ifremer.fr/doc/00496/60719/65285.xlsx https://doi.org/10.1016/j.quascirev.2016.06.017 https://archimer.ifremer.fr/doc/00496/60719/ eng eng Pergamon-elsevier Science Ltd https://archimer.ifremer.fr/doc/00496/60719/65283.pdf https://archimer.ifremer.fr/doc/00496/60719/65284.xlsx https://archimer.ifremer.fr/doc/00496/60719/65285.xlsx doi:10.1016/j.quascirev.2016.06.017 https://archimer.ifremer.fr/doc/00496/60719/ info:eu-repo/semantics/openAccess restricted use Quaternary Science Reviews (0277-3791) (Pergamon-elsevier Science Ltd), 2016-08 , Vol. 146 , P. 238-250 Western North America Drought Pluvial Synthesis Climate change Multi-proxy text Publication info:eu-repo/semantics/article 2016 ftarchimer https://doi.org/10.1016/j.quascirev.2016.06.017 2021-09-23T20:32:46Z Western North America (WNA) is rich in hydroclimate reconstructions, yet questions remain about the causes of decadal-to-multidecadal hydroclimate variability. Teleconnection patterns preserved in annually-resolved tree-ring reconstructed drought maps, and anomalies in a global network of proxy sea surface temperature (SST) reconstructions, were used to reassess the evidence linking ocean forcing to WNA hydroclimate variability over the past millennium. Potential forcing mechanisms of the Medieval Climate Anomaly (MCA) and individual drought and pluvial events including two multidecadal-length MCA pluvials were evaluated. We show strong teleconnection patterns occurred during the driest (wettest) years within persistent droughts (pluvials), implicating SSTs as a potent hydroclimate forcing mechanism. The role of the SSTs on longer timescales is more complex. Pacific teleconnection patterns show little long-term change, whereas low-resolution SST reconstructions vary over decades to centuries. While weaker than the tropical Pacific teleconnections, North Atlantic teleconnection patterns and SST reconstructions also show links to WNA droughts and pluvials, and may in part account for longer term WNA hydroclimate changes. Nonetheless, evidence linking WNA hydroclimate to SSTs still remains sparse and nuanced especially over long-timescales with a broader range of hydroclimatic variability than characterized during the 20th century. Article in Journal/Newspaper North Atlantic Archimer (Archive Institutionnelle de l'Ifremer - Institut français de recherche pour l'exploitation de la mer) Pacific Quaternary Science Reviews 146 238 250 |
institution |
Open Polar |
collection |
Archimer (Archive Institutionnelle de l'Ifremer - Institut français de recherche pour l'exploitation de la mer) |
op_collection_id |
ftarchimer |
language |
English |
topic |
Western North America Drought Pluvial Synthesis Climate change Multi-proxy |
spellingShingle |
Western North America Drought Pluvial Synthesis Climate change Multi-proxy Routson, Cody C. Woodhouse, Connie A. Overpeck, Jonathan T. Betancourt, Julio L. Mckay, Nicholas P. Teleconnected ocean forcing of Western North American droughts and pluvials during the last millennium |
topic_facet |
Western North America Drought Pluvial Synthesis Climate change Multi-proxy |
description |
Western North America (WNA) is rich in hydroclimate reconstructions, yet questions remain about the causes of decadal-to-multidecadal hydroclimate variability. Teleconnection patterns preserved in annually-resolved tree-ring reconstructed drought maps, and anomalies in a global network of proxy sea surface temperature (SST) reconstructions, were used to reassess the evidence linking ocean forcing to WNA hydroclimate variability over the past millennium. Potential forcing mechanisms of the Medieval Climate Anomaly (MCA) and individual drought and pluvial events including two multidecadal-length MCA pluvials were evaluated. We show strong teleconnection patterns occurred during the driest (wettest) years within persistent droughts (pluvials), implicating SSTs as a potent hydroclimate forcing mechanism. The role of the SSTs on longer timescales is more complex. Pacific teleconnection patterns show little long-term change, whereas low-resolution SST reconstructions vary over decades to centuries. While weaker than the tropical Pacific teleconnections, North Atlantic teleconnection patterns and SST reconstructions also show links to WNA droughts and pluvials, and may in part account for longer term WNA hydroclimate changes. Nonetheless, evidence linking WNA hydroclimate to SSTs still remains sparse and nuanced especially over long-timescales with a broader range of hydroclimatic variability than characterized during the 20th century. |
format |
Article in Journal/Newspaper |
author |
Routson, Cody C. Woodhouse, Connie A. Overpeck, Jonathan T. Betancourt, Julio L. Mckay, Nicholas P. |
author_facet |
Routson, Cody C. Woodhouse, Connie A. Overpeck, Jonathan T. Betancourt, Julio L. Mckay, Nicholas P. |
author_sort |
Routson, Cody C. |
title |
Teleconnected ocean forcing of Western North American droughts and pluvials during the last millennium |
title_short |
Teleconnected ocean forcing of Western North American droughts and pluvials during the last millennium |
title_full |
Teleconnected ocean forcing of Western North American droughts and pluvials during the last millennium |
title_fullStr |
Teleconnected ocean forcing of Western North American droughts and pluvials during the last millennium |
title_full_unstemmed |
Teleconnected ocean forcing of Western North American droughts and pluvials during the last millennium |
title_sort |
teleconnected ocean forcing of western north american droughts and pluvials during the last millennium |
publisher |
Pergamon-elsevier Science Ltd |
publishDate |
2016 |
url |
https://archimer.ifremer.fr/doc/00496/60719/65283.pdf https://archimer.ifremer.fr/doc/00496/60719/65284.xlsx https://archimer.ifremer.fr/doc/00496/60719/65285.xlsx https://doi.org/10.1016/j.quascirev.2016.06.017 https://archimer.ifremer.fr/doc/00496/60719/ |
geographic |
Pacific |
geographic_facet |
Pacific |
genre |
North Atlantic |
genre_facet |
North Atlantic |
op_source |
Quaternary Science Reviews (0277-3791) (Pergamon-elsevier Science Ltd), 2016-08 , Vol. 146 , P. 238-250 |
op_relation |
https://archimer.ifremer.fr/doc/00496/60719/65283.pdf https://archimer.ifremer.fr/doc/00496/60719/65284.xlsx https://archimer.ifremer.fr/doc/00496/60719/65285.xlsx doi:10.1016/j.quascirev.2016.06.017 https://archimer.ifremer.fr/doc/00496/60719/ |
op_rights |
info:eu-repo/semantics/openAccess restricted use |
op_doi |
https://doi.org/10.1016/j.quascirev.2016.06.017 |
container_title |
Quaternary Science Reviews |
container_volume |
146 |
container_start_page |
238 |
op_container_end_page |
250 |
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1766132356230414336 |