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Seasonal temperature and moisture changes in interior semi-arid Spain from the last interglacial to the late Holocene

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Title: Seasonal temperature and moisture changes in interior semi-arid Spain from the last interglacial to the late Holocene
Authors: Wei, D
Gonzalez-Samperiz, P
Gil-Romera, G
Harrison, SP
Prentice, IC
Item Type: Journal Article
Abstract: The El Cañizar de Villarquemado pollen record covers the last part of MIS 6 to the late Holocene. We use Tolerance-Weighted Averaging Partial Least-Squares (TWA-PLS) to reconstruct mean temperature of the coldest month (MTCO) and growing degree days above 0° C (GDD0) and the ratio of annual precipitation to annual potential evapotranspiration (MI), accounting for the ecophysiological effect of changing CO2 on water-use efficiency. Rapid summer warming occurred during the Zeifen-Kattegat Oscillation at the transition to MIS 5. Summers were cold during MIS 4 and MIS 2, but some intervals of MIS 3 had summers as warm as the warmest phases of MIS 5 or the Holocene. Winter temperatures declined from MIS 4 to MIS 2. Changes in temperature seasonality within MIS 5 and MIS 1 are consistent with insolation seasonality changes. Conditions became progressively more humid during MIS 5, and MIS 4 was also humid although MIS 3 was more arid. Changes in MI and GDD0 are anti-correlated, with increased MI during summer warming intervals. Comparison with other records shows glacial-interglacial changes were not unform across the circum-Mediterranean region but available quantitative reconstructions are insufficient to determine if east-west differences reflect the circulation-driven precipitation dipole seen in recent decades.
Issue Date: 1-May-2021
Date of Acceptance: 21-Oct-2020
URI: http://hdl.handle.net/10044/1/84961
DOI: 10.1017/qua.2020.108
ISSN: 0033-5894
Publisher: Academic Press
Start Page: 143
End Page: 155
Journal / Book Title: Quaternary Research
Volume: 101
Copyright Statement: © University of Washington. Published by Cambridge University Press, 2021. This is an Open Access article, distributed under the terms of the Creative Commons Attribution licence (http://creativecommons.org/licenses/by/4.0/), which permits unrestricted re-use, distribution, and reproduction in any medium, provided the original work is properly cited.
Sponsor/Funder: AXA Research Fund
European Research Council
Funder's Grant Number: AXA Chair Programme in Biosphere and Climate Impacts
787203
Keywords: Paleontology
0403 Geology
0406 Physical Geography and Environmental Geoscience
2101 Archaeology
Publication Status: Published
Online Publication Date: 2021-01-29
Appears in Collections:Grantham Institute for Climate Change
Faculty of Natural Sciences



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