Baker, JCA orcid.org/0000-0002-3720-4758, Gloor, M orcid.org/0000-0002-9384-6341, Boom, A et al. (4 more authors) (2018) Questioning the Influence of Sunspots on Amazon Hydrology: Even a Broken Clock Tells the Right Time Twice a Day. Geophysical Research Letters, 45 (3). pp. 1419-1422. ISSN 0094-8276
Abstract
It was suggested in a recent article that sunspots drive decadal variation in Amazon River flow. This conclusion was based on a novel time series decomposition method used to extract a decadal signal from the Amazon River record. We have extended this analysis back in time, using a new hydrological proxy record of tree ring oxygen isotopes (δ¹⁸OTR). Consistent with the findings of Antico and Torres, we find a positive correlation between sunspots and the decadal δ¹⁸OTR cycle from 1903 to 2012 (r = 0.60, p < 0.001). However, the relationship does not persist into the preceding century and even becomes weakly negative (r = −0.30, p = 0.11, 1799–1902). This result casts considerable doubt over the mechanism by which sunspots are purported to influence Amazon hydrology.
Metadata
Item Type: | Article |
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Authors/Creators: |
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Copyright, Publisher and Additional Information: | © 2018, The Authors. This is an open access article under the terms of the Creative Commons Attribution License, which permits use, distribution and reproduction in any medium, provided the original work is properly cited. To view a copy of this license, visit http://creativecommons.org/licenses/by/4.0/ |
Keywords: | sunspots; Amazon; hydrology; tree rings; isotopes |
Dates: |
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Institution: | The University of Leeds |
Academic Units: | The University of Leeds > Faculty of Environment (Leeds) > School of Earth and Environment (Leeds) > Inst for Climate & Atmos Science (ICAS) (Leeds) The University of Leeds > Faculty of Environment (Leeds) > School of Geography (Leeds) > Ecology & Global Change (Leeds) |
Funding Information: | Funder Grant number NERC NE/K01353X/1 RCUK NE/M02203X/1 RCUK NE/M022021/1 |
Depositing User: | Symplectic Publications |
Date Deposited: | 07 Feb 2018 12:30 |
Last Modified: | 25 Jun 2023 21:13 |
Status: | Published |
Publisher: | American Geophysical Union |
Identification Number: | 10.1002/2017GL076889 |
Open Archives Initiative ID (OAI ID): | oai:eprints.whiterose.ac.uk:127009 |
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