Sangam: A Confluence of Knowledge Streams

Spatially coherent late-Holocene Antarctic Peninsula surface air temperature variability

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dc.creator Charman, D
dc.creator Amesbury, MJ
dc.creator Roland, TP
dc.creator Royles, J
dc.creator Hodgson, DA
dc.creator Convey, P
dc.creator Griffiths, H
dc.date 2018-11-23T11:40:41Z
dc.date 2018-11-09
dc.date 2018-11-23T11:40:41Z
dc.date.accessioned 2022-05-27T01:03:06Z
dc.date.available 2022-05-27T01:03:06Z
dc.identifier Vol. 46 (12), pp. 1071-1074
dc.identifier 10.1130/G45347.1
dc.identifier http://hdl.handle.net/10871/34887
dc.identifier 0091-7613
dc.identifier Geology
dc.identifier.uri http://localhost:8080/xmlui/handle/CUHPOERS/241927
dc.description This is the final version. Available on open access from Geological Society of America via the DOI in this record
dc.description The Antarctic Peninsula experienced a rapid rise in regional temperature during the second half of the 20th century, but the regional pattern of multi-centennial temperature changes and their dynamical drivers remain poorly understood. Here we use proxies of biological productivity in rare, deep moss banks to infer past surface air temperature changes on the Antarctic Peninsula and identify the drivers of these changes. Late Holocene temperatures are broadly consistent between the low-elevation moss bank records and a high-elevation ice core site, and we conclude that variation in the strength of the westerlies, linked to the Southern Annular Mode, is the most likely driver. Our data do not support a hypothesized persistent temperature dipole over the Antarctic Peninsula related to a strong influence of El Niño–Southern Oscillation. Rates of change in biological productivity on the peninsula over the 20th century are unusual in the context of the late Holocene, and further warming will drive rapid future increases in moss growth and microbial populations.
dc.description This research was funded by the UK Natural Environment Research Council (NERC) Antarctic Funding Initiative (grant NE/H014896/1) and NERC Radiocarbon Facility allocation 1605.0312.
dc.language en
dc.publisher Geological Society of America
dc.relation https://doi.org/10.1130/G45347.1
dc.rights © 2018 The Authors. Open Access: This paper is published under the terms of the CC-BY license.
dc.title Spatially coherent late-Holocene Antarctic Peninsula surface air temperature variability
dc.type Article


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