ABSTRACT 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 impo...
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Online Access: | http://citeseerx.ist.psu.edu/viewdoc/summary?doi=10.1.1.625.6866 http://soap.siteturbine.com/faculty/faculty_files/publications/1082/Fisher_GQ_2004.pdf |
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ftciteseerx:oai:CiteSeerX.psu:10.1.1.625.6866 2023-05-15T13:14:57+02:00 The Pennsylvania State University CiteSeerX Archives application/pdf http://citeseerx.ist.psu.edu/viewdoc/summary?doi=10.1.1.625.6866 http://soap.siteturbine.com/faculty/faculty_files/publications/1082/Fisher_GQ_2004.pdf en eng http://citeseerx.ist.psu.edu/viewdoc/summary?doi=10.1.1.625.6866 http://soap.siteturbine.com/faculty/faculty_files/publications/1082/Fisher_GQ_2004.pdf Metadata may be used without restrictions as long as the oai identifier remains attached to it. http://soap.siteturbine.com/faculty/faculty_files/publications/1082/Fisher_GQ_2004.pdf text ftciteseerx 2016-01-08T15:12:47Z ABSTRACT 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 pin-ning-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 pre-dominantly 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 Text aleutian low Unknown Mount Logan ENVELOPE(-140.405,-140.405,60.567,60.567) Pacific |
institution |
Open Polar |
collection |
Unknown |
op_collection_id |
ftciteseerx |
language |
English |
description |
ABSTRACT 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 pin-ning-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 pre-dominantly 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 |
author2 |
The Pennsylvania State University CiteSeerX Archives |
format |
Text |
url |
http://citeseerx.ist.psu.edu/viewdoc/summary?doi=10.1.1.625.6866 http://soap.siteturbine.com/faculty/faculty_files/publications/1082/Fisher_GQ_2004.pdf |
long_lat |
ENVELOPE(-140.405,-140.405,60.567,60.567) |
geographic |
Mount Logan Pacific |
geographic_facet |
Mount Logan Pacific |
genre |
aleutian low |
genre_facet |
aleutian low |
op_source |
http://soap.siteturbine.com/faculty/faculty_files/publications/1082/Fisher_GQ_2004.pdf |
op_relation |
http://citeseerx.ist.psu.edu/viewdoc/summary?doi=10.1.1.625.6866 http://soap.siteturbine.com/faculty/faculty_files/publications/1082/Fisher_GQ_2004.pdf |
op_rights |
Metadata may be used without restrictions as long as the oai identifier remains attached to it. |
_version_ |
1766266252256346112 |