Combination of insolation and ice-sheet forcing drive enhanced humidity in northern subtropical regions during MIS 13

Marine Isotope Stage (MIS) 13, ∼533–478 ka, has received particular attention due to the unexpected enhancement of monsoon systems under a cool climate characterized by lower atmospheric CO2 and larger ice volume than many other interglacials. Key questions remain about its regional expression (inte...

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Autores: Oliveira, Dulce, Desprat, Stéphanie, Rodrigues, Teresa, Yin, Qiuzhen, Naughton, Filipa, Trigo, Ricardo M., Su, Qianqian, Grimalt, Joan O., Alonso-García, Montserrat, Voelker, Antje H. L., Abrantes, Fátima, Sánchez Goñi, Maria Fernanda
Tipo de documento: artigo
Estado:Versión aceptada para publicación
Data de publicação:2020
País:España
Recursos:Consejo Superior de Investigaciones Científicas (CSIC)
Repositório:DIGITAL.CSIC. Repositorio Institucional del CSIC
OAI Identifier:oai:digital.csic.es:10261/221055
Acesso em linha:http://hdl.handle.net/10261/221055
Access Level:Acceso aberto
Palavra-chave:Mid-Brunhes event
Interglacial MIS 13
Mediterranean vegetation
Model-data comparison
Insolation
Ice-sheets
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oai_identifier_str oai:digital.csic.es:10261/221055
network_acronym_str ES
network_name_str España
repository_id_str
dc.title.none.fl_str_mv Combination of insolation and ice-sheet forcing drive enhanced humidity in northern subtropical regions during MIS 13
title Combination of insolation and ice-sheet forcing drive enhanced humidity in northern subtropical regions during MIS 13
spellingShingle Combination of insolation and ice-sheet forcing drive enhanced humidity in northern subtropical regions during MIS 13
Oliveira, Dulce
Mid-Brunhes event
Interglacial MIS 13
Mediterranean vegetation
Model-data comparison
Insolation
Ice-sheets
title_short Combination of insolation and ice-sheet forcing drive enhanced humidity in northern subtropical regions during MIS 13
title_full Combination of insolation and ice-sheet forcing drive enhanced humidity in northern subtropical regions during MIS 13
title_fullStr Combination of insolation and ice-sheet forcing drive enhanced humidity in northern subtropical regions during MIS 13
title_full_unstemmed Combination of insolation and ice-sheet forcing drive enhanced humidity in northern subtropical regions during MIS 13
title_sort Combination of insolation and ice-sheet forcing drive enhanced humidity in northern subtropical regions during MIS 13
dc.creator.none.fl_str_mv Oliveira, Dulce
Desprat, Stéphanie
Rodrigues, Teresa
Yin, Qiuzhen
Naughton, Filipa
Trigo, Ricardo M.
Su, Qianqian
Grimalt, Joan O.
Alonso-García, Montserrat
Voelker, Antje H. L.
Abrantes, Fátima
Sánchez Goñi, Maria Fernanda
author Oliveira, Dulce
author_facet Oliveira, Dulce
Desprat, Stéphanie
Rodrigues, Teresa
Yin, Qiuzhen
Naughton, Filipa
Trigo, Ricardo M.
Su, Qianqian
Grimalt, Joan O.
Alonso-García, Montserrat
Voelker, Antje H. L.
Abrantes, Fátima
Sánchez Goñi, Maria Fernanda
author_role author
author2 Desprat, Stéphanie
Rodrigues, Teresa
Yin, Qiuzhen
Naughton, Filipa
Trigo, Ricardo M.
Su, Qianqian
Grimalt, Joan O.
Alonso-García, Montserrat
Voelker, Antje H. L.
Abrantes, Fátima
Sánchez Goñi, Maria Fernanda
author2_role author
author
author
author
author
author
author
author
author
author
author
dc.contributor.none.fl_str_mv Ministerio de Ciencia e Innovación (España)
Grimalt, Joan O. [0000-0002-7391-5768]
Consejo Superior de Investigaciones Científicas [https://ror.org/02gfc7t72]
dc.subject.none.fl_str_mv Mid-Brunhes event
Interglacial MIS 13
Mediterranean vegetation
Model-data comparison
Insolation
Ice-sheets
topic Mid-Brunhes event
Interglacial MIS 13
Mediterranean vegetation
Model-data comparison
Insolation
Ice-sheets
description Marine Isotope Stage (MIS) 13, ∼533–478 ka, has received particular attention due to the unexpected enhancement of monsoon systems under a cool climate characterized by lower atmospheric CO2 and larger ice volume than many other interglacials. Key questions remain about its regional expression (intensity, climate variability, length), and underlying forcing factors, in particular at the mid-latitudes. Here we examine the SW Iberian vegetation, terrestrial climate and sea surface temperature (SST) variability during MIS 13 by combining pollen and biomarker data from IODP Site U1385 with climate-model experiments. We show, for the first time, that despite strong precessional forcing, MIS 13 stands out for its large forest expansions with a reduced Mediterranean character alternating with muted forest contractions, indicating that this stage is marked by a cool-temperate climate regime with high levels of humidity. Results of our data-model comparison reveal that MIS 13 orbitally driven SW Iberian climate and vegetation changes are modulated by the relatively strong ice-sheet forcing. We find that the Northern Hemisphere ice-sheets prescribed at the MIS 13 climate optimum reinforce the insolation effect by increasing the tree fraction and both winter and summer precipitation. We propose that the interactions between ice-sheets and major atmospheric circulation systems may have resulted in the persistent influence of the mid-latitude cells over the SW Iberian region, which led to intensified moisture availability and reduced seasonality, and, in turn, to a pronounced expansion of the temperate forest.
publishDate 2020
dc.date.none.fl_str_mv 2020
2020
2020
dc.type.none.fl_str_mv info:eu-repo/semantics/article
http://purl.org/coar/resource_type/c_6501
Postprint
info:eu-repo/semantics/acceptedVersion
format article
status_str acceptedVersion
dc.identifier.none.fl_str_mv http://hdl.handle.net/10261/221055
url http://hdl.handle.net/10261/221055
dc.language.none.fl_str_mv Inglés
language_invalid_str_mv Inglés
dc.relation.none.fl_str_mv #PLACEHOLDER_PARENT_METADATA_VALUE#
info:eu-repo/grantAgreement/AEI/Plan Estatal de Investigación Científica y Técnica y de Innovación 2017-2020/RTI2018-099489-B-I00. Q.
https://doi.org/10.1016/j.quascirev.2020.106573
Sí
dc.rights.none.fl_str_mv info:eu-repo/semantics/openAccess
eu_rights_str_mv openAccess
dc.publisher.none.fl_str_mv Elsevier
publisher.none.fl_str_mv Elsevier
dc.source.none.fl_str_mv reponame:DIGITAL.CSIC. Repositorio Institucional del CSIC
instname:Consejo Superior de Investigaciones Científicas (CSIC)
instname_str Consejo Superior de Investigaciones Científicas (CSIC)
reponame_str DIGITAL.CSIC. Repositorio Institucional del CSIC
collection DIGITAL.CSIC. Repositorio Institucional del CSIC
repository.name.fl_str_mv
repository.mail.fl_str_mv
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spelling Combination of insolation and ice-sheet forcing drive enhanced humidity in northern subtropical regions during MIS 13Oliveira, DulceDesprat, StéphanieRodrigues, TeresaYin, QiuzhenNaughton, FilipaTrigo, Ricardo M.Su, QianqianGrimalt, Joan O.Alonso-García, MontserratVoelker, Antje H. L.Abrantes, FátimaSánchez Goñi, Maria FernandaMid-Brunhes eventInterglacial MIS 13Mediterranean vegetationModel-data comparisonInsolationIce-sheetsMarine Isotope Stage (MIS) 13, ∼533–478 ka, has received particular attention due to the unexpected enhancement of monsoon systems under a cool climate characterized by lower atmospheric CO2 and larger ice volume than many other interglacials. Key questions remain about its regional expression (intensity, climate variability, length), and underlying forcing factors, in particular at the mid-latitudes. Here we examine the SW Iberian vegetation, terrestrial climate and sea surface temperature (SST) variability during MIS 13 by combining pollen and biomarker data from IODP Site U1385 with climate-model experiments. We show, for the first time, that despite strong precessional forcing, MIS 13 stands out for its large forest expansions with a reduced Mediterranean character alternating with muted forest contractions, indicating that this stage is marked by a cool-temperate climate regime with high levels of humidity. Results of our data-model comparison reveal that MIS 13 orbitally driven SW Iberian climate and vegetation changes are modulated by the relatively strong ice-sheet forcing. We find that the Northern Hemisphere ice-sheets prescribed at the MIS 13 climate optimum reinforce the insolation effect by increasing the tree fraction and both winter and summer precipitation. We propose that the interactions between ice-sheets and major atmospheric circulation systems may have resulted in the persistent influence of the mid-latitude cells over the SW Iberian region, which led to intensified moisture availability and reduced seasonality, and, in turn, to a pronounced expansion of the temperate forest.Financial support was provided by the Portuguese Foundation for Science and Technology (FCT) through the project CLIMHOL (PTDC/AAC-CLI/100157/2008), ULTImATum (IF/01489/2015), SAICT-45-2017-02 projects (WARM WORLDS: 29897 and HOLMODRIVE: 29029), CCMAR FCT Research Unit - project UIDB/04326/2020, D. Oliveira’s contract (CEECIND/02208/2017), F. Naughton’s contract (IF/01489/2015), T. Rodrigues’s contract (WarmWorld- PTDC/CTA-GEO/29897/2017), Voelker’s contract (IF/01500/2014), and WarmClim, a LEFE-INSU IMAGO project. D. Oliveira acknowledges the fundng provided by the L’Oréal Portugal Medal of Honour for Women in Science 2018 from L’Oréal, FCT and UNESCO. M. Alonso-Garcia acknowledges funding from FCT through the CINNAMOW project (PTDC/MAR-PRO/3396/2014) and the Spanish Ministry of Science through the grant RTI2018-099489-B-I00. Q. Yin is a Research Associate of the Belgian National Fund for Scientific Research (FRS-FNRS). Computational resources have been provided by the supercomputing facilities of the Université catholique de Louvain (CISM/UCL) and the Consortium des Equipements de Calcul Intensif en Fédération Wallonie Bruxelles (CECI) funded by FRS-FNRS. We would like to thank the scientists and technicians of IODP Expedition 339, the Bremen Core Repository, L. Devaux for technical assistance, V. Hanquiez for drawing Fig. 1., and two anonymous reviewers for their constructive comments.Peer reviewedElsevierMinisterio de Ciencia e Innovación (España)Grimalt, Joan O. [0000-0002-7391-5768]Consejo Superior de Investigaciones Científicas [https://ror.org/02gfc7t72]202020202020info:eu-repo/semantics/articlehttp://purl.org/coar/resource_type/c_6501Postprintinfo:eu-repo/semantics/acceptedVersionhttp://hdl.handle.net/10261/221055reponame:DIGITAL.CSIC. Repositorio Institucional del CSICinstname:Consejo Superior de Investigaciones Científicas (CSIC)Inglés#PLACEHOLDER_PARENT_METADATA_VALUE#info:eu-repo/grantAgreement/AEI/Plan Estatal de Investigación Científica y Técnica y de Innovación 2017-2020/RTI2018-099489-B-I00. Q.https://doi.org/10.1016/j.quascirev.2020.106573Síinfo:eu-repo/semantics/openAccessoai:digital.csic.es:10261/2210552026-05-22T06:33:51Z
score 15,811543

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