Stable Isotope Records from Mount Logan, Eclipse Ice Cores and Nearby Jellybean Lake. Water Cycle of the North Pacific Over 2000 Years and Over Five Vertical Kilometres: Sudden Shifts and Tropical Connections
Three ice cores recovered on or near Mount Logan, together with a nearby lake record (Jellybean Lake), cover variously 500 to 30 000 years. This suite of records offers a unique view of the lapse rate in stable isotopes from the lower to upper troposphere. The region is climatologically important, b...
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ftuninhampshire:oai:scholars.unh.edu:earthsci_facpub-1543 2023-05-15T13:15:00+02:00 Stable Isotope Records from Mount Logan, Eclipse Ice Cores and Nearby Jellybean Lake. Water Cycle of the North Pacific Over 2000 Years and Over Five Vertical Kilometres: Sudden Shifts and Tropical Connections Fisher, David Wake, Cameron P Kreutz, K Yalcin, Kaplan Steig, Eric J Mayewski, Paul A Anderson, L Zheng, James Rupper, S Zdanowicz, Christian Demuth, Mike Waszkiewicz, M Dahl-Jensen, Dorthe Goto-Azuma, Kumiko Bourgeois, Jocelyne Koerner, Roy M Sekerka, J Osterberg, Erich Abbott, M B Finney, B P Burns, S J 2004-01-01T08:00:00Z https://scholars.unh.edu/earthsci_facpub/544 http://www.erudit.org/revue/gpq/2004/v58/n2-3/013147ar.html unknown University of New Hampshire Scholars' Repository https://scholars.unh.edu/earthsci_facpub/544 http://www.erudit.org/revue/gpq/2004/v58/n2-3/013147ar.html Tous droits réservés © Les Presses de l'Université de Montréal, 2006 Earth Sciences Scholarship text 2004 ftuninhampshire 2023-01-30T21:35:33Z Three ice cores recovered on or near Mount Logan, together with a nearby lake record (Jellybean Lake), cover variously 500 to 30 000 years. This suite of records offers a unique view of the lapse rate in stable isotopes from the lower to upper troposphere. The region is climatologically important, being beside the Cordilleran pinning-point of the Rossby Wave system and the Aleutian Low. Comparison of stable isotope series over the last 2000 years and model simulations suggest sudden and persistent shifts between modern (mixed) and zonal flow regimes of water vapour transport to the Pacific Northwest. The last such shift was in A.D. 1840. Model simulations for modern and “pure” zonal flow suggest that these shifts are consistent regime changes between these flow types, with predominantly zonal flow prior to ca. A.D. 1840 and modern thereafter. The 5.4 and 0.8 km asl records show a shift at A.D. 1840 and another at A.D. 800. It is speculated that the A.D. 1840 regime shift coincided with the end of the Little Ice Age and the A.D. 800 shift with the beginning of the European Medieval Warm Period. The shifts are very abrupt, taking only a few years at most. Text aleutian low University of New Hampshire: Scholars Repository Pacific Mount Logan ENVELOPE(-140.405,-140.405,60.567,60.567) |
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Open Polar |
collection |
University of New Hampshire: Scholars Repository |
op_collection_id |
ftuninhampshire |
language |
unknown |
description |
Three ice cores recovered on or near Mount Logan, together with a nearby lake record (Jellybean Lake), cover variously 500 to 30 000 years. This suite of records offers a unique view of the lapse rate in stable isotopes from the lower to upper troposphere. The region is climatologically important, being beside the Cordilleran pinning-point of the Rossby Wave system and the Aleutian Low. Comparison of stable isotope series over the last 2000 years and model simulations suggest sudden and persistent shifts between modern (mixed) and zonal flow regimes of water vapour transport to the Pacific Northwest. The last such shift was in A.D. 1840. Model simulations for modern and “pure” zonal flow suggest that these shifts are consistent regime changes between these flow types, with predominantly zonal flow prior to ca. A.D. 1840 and modern thereafter. The 5.4 and 0.8 km asl records show a shift at A.D. 1840 and another at A.D. 800. It is speculated that the A.D. 1840 regime shift coincided with the end of the Little Ice Age and the A.D. 800 shift with the beginning of the European Medieval Warm Period. The shifts are very abrupt, taking only a few years at most. |
format |
Text |
author |
Fisher, David Wake, Cameron P Kreutz, K Yalcin, Kaplan Steig, Eric J Mayewski, Paul A Anderson, L Zheng, James Rupper, S Zdanowicz, Christian Demuth, Mike Waszkiewicz, M Dahl-Jensen, Dorthe Goto-Azuma, Kumiko Bourgeois, Jocelyne Koerner, Roy M Sekerka, J Osterberg, Erich Abbott, M B Finney, B P Burns, S J |
spellingShingle |
Fisher, David Wake, Cameron P Kreutz, K Yalcin, Kaplan Steig, Eric J Mayewski, Paul A Anderson, L Zheng, James Rupper, S Zdanowicz, Christian Demuth, Mike Waszkiewicz, M Dahl-Jensen, Dorthe Goto-Azuma, Kumiko Bourgeois, Jocelyne Koerner, Roy M Sekerka, J Osterberg, Erich Abbott, M B Finney, B P Burns, S J Stable Isotope Records from Mount Logan, Eclipse Ice Cores and Nearby Jellybean Lake. Water Cycle of the North Pacific Over 2000 Years and Over Five Vertical Kilometres: Sudden Shifts and Tropical Connections |
author_facet |
Fisher, David Wake, Cameron P Kreutz, K Yalcin, Kaplan Steig, Eric J Mayewski, Paul A Anderson, L Zheng, James Rupper, S Zdanowicz, Christian Demuth, Mike Waszkiewicz, M Dahl-Jensen, Dorthe Goto-Azuma, Kumiko Bourgeois, Jocelyne Koerner, Roy M Sekerka, J Osterberg, Erich Abbott, M B Finney, B P Burns, S J |
author_sort |
Fisher, David |
title |
Stable Isotope Records from Mount Logan, Eclipse Ice Cores and Nearby Jellybean Lake. Water Cycle of the North Pacific Over 2000 Years and Over Five Vertical Kilometres: Sudden Shifts and Tropical Connections |
title_short |
Stable Isotope Records from Mount Logan, Eclipse Ice Cores and Nearby Jellybean Lake. Water Cycle of the North Pacific Over 2000 Years and Over Five Vertical Kilometres: Sudden Shifts and Tropical Connections |
title_full |
Stable Isotope Records from Mount Logan, Eclipse Ice Cores and Nearby Jellybean Lake. Water Cycle of the North Pacific Over 2000 Years and Over Five Vertical Kilometres: Sudden Shifts and Tropical Connections |
title_fullStr |
Stable Isotope Records from Mount Logan, Eclipse Ice Cores and Nearby Jellybean Lake. Water Cycle of the North Pacific Over 2000 Years and Over Five Vertical Kilometres: Sudden Shifts and Tropical Connections |
title_full_unstemmed |
Stable Isotope Records from Mount Logan, Eclipse Ice Cores and Nearby Jellybean Lake. Water Cycle of the North Pacific Over 2000 Years and Over Five Vertical Kilometres: Sudden Shifts and Tropical Connections |
title_sort |
stable isotope records from mount logan, eclipse ice cores and nearby jellybean lake. water cycle of the north pacific over 2000 years and over five vertical kilometres: sudden shifts and tropical connections |
publisher |
University of New Hampshire Scholars' Repository |
publishDate |
2004 |
url |
https://scholars.unh.edu/earthsci_facpub/544 http://www.erudit.org/revue/gpq/2004/v58/n2-3/013147ar.html |
long_lat |
ENVELOPE(-140.405,-140.405,60.567,60.567) |
geographic |
Pacific Mount Logan |
geographic_facet |
Pacific Mount Logan |
genre |
aleutian low |
genre_facet |
aleutian low |
op_source |
Earth Sciences Scholarship |
op_relation |
https://scholars.unh.edu/earthsci_facpub/544 http://www.erudit.org/revue/gpq/2004/v58/n2-3/013147ar.html |
op_rights |
Tous droits réservés © Les Presses de l'Université de Montréal, 2006 |
_version_ |
1766266465943552000 |