Western U.S. lake expansions during Heinrich stadials linked to Pacific Hadley circulation
Unidad de excelencia María de Maeztu MdM-2015-0552 Lake and cave records show that winter precipitation in the southwestern United States increased substantially during millennial-scale periods of Northern Hemisphere winter cooling known as Heinrich stadials. However, previous work has not produced...
Main Authors: | , , , , |
---|---|
Format: | Article in Journal/Newspaper |
Language: | English |
Published: |
2018
|
Subjects: | |
Online Access: | https://ddd.uab.cat/record/253742 |
id |
ftuabarcelonapb:oai:ddd.uab.cat:253742 |
---|---|
record_format |
openpolar |
spelling |
ftuabarcelonapb:oai:ddd.uab.cat:253742 2023-05-15T13:14:52+02:00 Western U.S. lake expansions during Heinrich stadials linked to Pacific Hadley circulation McGee, D. Moreno-Chamarro, E. Marshall, J. Galbraith, Eric Universitat Autònoma de Barcelona. Departament de Matemàtiques 2018 application/pdf https://ddd.uab.cat/record/253742 eng eng Ministerio de Economía y Competitividad MDM-2015-0552 Science advances Vol. 4, Issue 11 (November 2018), art. eaav0118 https://ddd.uab.cat/record/253742 urn:10.1126/sciadv.aav0118 urn:oai:ddd.uab.cat:253742 urn:pmcid:PMC6261653 urn:pmc-uid:6261653 urn:pmid:30498784 urn:oai:pubmedcentral.nih.gov:6261653 urn:oai:egreta.uab.cat:publications/e38f8ce2-8997-46f3-b4b2-bd4572a15758 urn:scopus_id:85057565768 urn:articleid:23752548v4n11eaav0118 open access Aquest document està subjecte a una llicència d'ús Creative Commons. Es permet la reproducció total o parcial, la distribució, la comunicació pública de l'obra i la creació d'obres derivades, sempre que no sigui amb finalitats comercials, i sempre que es reconegui l'autoria de l'obra original. https://creativecommons.org/licenses/by-nc/4.0/ CC-BY-NC Article 2018 ftuabarcelonapb 2023-02-06T21:24:48Z Unidad de excelencia María de Maeztu MdM-2015-0552 Lake and cave records show that winter precipitation in the southwestern United States increased substantially during millennial-scale periods of Northern Hemisphere winter cooling known as Heinrich stadials. However, previous work has not produced a clear picture of the atmospheric circulation changes driving these precipitation increases. Here, we combine data with model simulations to show that maximum winter precipitation anomalies were related to an intensified subtropical jet and a deepened, southeastward-shifted Aleutian Low, which together increased atmospheric river-like transport of subtropical moisture into the western United States. The jet and Aleutian Low changes are tied to the southward displacement of the intertropical convergence zone and the accompanying intensification of the Hadley circulation in the central Pacific. These results refine our understanding of atmospheric changes accompanying Heinrich stadials and highlight the need for accurate representations of tropical-extratropical teleconnections in simulations of past and future precipitation changes in the region. Article in Journal/Newspaper aleutian low Universitat Autònoma de Barcelona: Dipòsit Digital de Documents de la UAB Pacific |
institution |
Open Polar |
collection |
Universitat Autònoma de Barcelona: Dipòsit Digital de Documents de la UAB |
op_collection_id |
ftuabarcelonapb |
language |
English |
description |
Unidad de excelencia María de Maeztu MdM-2015-0552 Lake and cave records show that winter precipitation in the southwestern United States increased substantially during millennial-scale periods of Northern Hemisphere winter cooling known as Heinrich stadials. However, previous work has not produced a clear picture of the atmospheric circulation changes driving these precipitation increases. Here, we combine data with model simulations to show that maximum winter precipitation anomalies were related to an intensified subtropical jet and a deepened, southeastward-shifted Aleutian Low, which together increased atmospheric river-like transport of subtropical moisture into the western United States. The jet and Aleutian Low changes are tied to the southward displacement of the intertropical convergence zone and the accompanying intensification of the Hadley circulation in the central Pacific. These results refine our understanding of atmospheric changes accompanying Heinrich stadials and highlight the need for accurate representations of tropical-extratropical teleconnections in simulations of past and future precipitation changes in the region. |
format |
Article in Journal/Newspaper |
author |
McGee, D. Moreno-Chamarro, E. Marshall, J. Galbraith, Eric Universitat Autònoma de Barcelona. Departament de Matemàtiques |
spellingShingle |
McGee, D. Moreno-Chamarro, E. Marshall, J. Galbraith, Eric Universitat Autònoma de Barcelona. Departament de Matemàtiques Western U.S. lake expansions during Heinrich stadials linked to Pacific Hadley circulation |
author_facet |
McGee, D. Moreno-Chamarro, E. Marshall, J. Galbraith, Eric Universitat Autònoma de Barcelona. Departament de Matemàtiques |
author_sort |
McGee, D. |
title |
Western U.S. lake expansions during Heinrich stadials linked to Pacific Hadley circulation |
title_short |
Western U.S. lake expansions during Heinrich stadials linked to Pacific Hadley circulation |
title_full |
Western U.S. lake expansions during Heinrich stadials linked to Pacific Hadley circulation |
title_fullStr |
Western U.S. lake expansions during Heinrich stadials linked to Pacific Hadley circulation |
title_full_unstemmed |
Western U.S. lake expansions during Heinrich stadials linked to Pacific Hadley circulation |
title_sort |
western u.s. lake expansions during heinrich stadials linked to pacific hadley circulation |
publishDate |
2018 |
url |
https://ddd.uab.cat/record/253742 |
geographic |
Pacific |
geographic_facet |
Pacific |
genre |
aleutian low |
genre_facet |
aleutian low |
op_relation |
Ministerio de Economía y Competitividad MDM-2015-0552 Science advances Vol. 4, Issue 11 (November 2018), art. eaav0118 https://ddd.uab.cat/record/253742 urn:10.1126/sciadv.aav0118 urn:oai:ddd.uab.cat:253742 urn:pmcid:PMC6261653 urn:pmc-uid:6261653 urn:pmid:30498784 urn:oai:pubmedcentral.nih.gov:6261653 urn:oai:egreta.uab.cat:publications/e38f8ce2-8997-46f3-b4b2-bd4572a15758 urn:scopus_id:85057565768 urn:articleid:23752548v4n11eaav0118 |
op_rights |
open access Aquest document està subjecte a una llicència d'ús Creative Commons. Es permet la reproducció total o parcial, la distribució, la comunicació pública de l'obra i la creació d'obres derivades, sempre que no sigui amb finalitats comercials, i sempre que es reconegui l'autoria de l'obra original. https://creativecommons.org/licenses/by-nc/4.0/ |
op_rightsnorm |
CC-BY-NC |
_version_ |
1766265819583479808 |