Seasonal temperature and moisture changes in interior semi-arid Spain from the last interglacial to the late Holocene
File(s)
Supporting information
Author(s)
Wei, Dongyang
Gonzalez-Samperiz, Penelope
Gil-Romera, Graciela
Harrison, Sandy P
Prentice, Iain Colin
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.
Date Issued
2021-05-01
Date Acceptance
2020-10-21
Citation
Quaternary Research, 2021, 101, pp.143-155
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.
License URL
Sponsor
AXA Research Fund
European Research Council
Grant Number
AXA Chair Programme in Biosphere and Climate Impacts
787203
Subjects
Paleontology
0403 Geology
0406 Physical Geography and Environmental Geoscience
2101 Archaeology
Publication Status
Published
Date Publish Online
2021-01-29