globalchange  > 气候减缓与适应
DOI: 10.1038/ngeo2769
Low atmospheric CO 2 levels during the Little Ice Age due to cooling-induced terrestrial uptake
Author: Rubino M.; Etheridge D.M.; Trudinger C.M.; Allison C.E.; Rayner P.J.; Enting I.; Mulvaney R.; Steele L.P.; Langenfelds R.L.; Sturges W.T.; Curran M.A.J.; Smith A.M.
Source Publication: Nature Geoscience
ISSN: 17520894
Publishing Year: 2016
Volume: 9, Issue:9
pages begin: 691
pages end: 694
Language: 英语
Scopus Keyword: atmospheric chemistry ; carbon dioxide ; carbon sequestration ; climate modeling ; cooling ; ice core ; Little Ice Age ; net primary production ; soil carbon ; temperature effect
English Abstract: Low atmospheric carbon dioxide (CO 2) concentration during the Little Ice Age has been used to derive the global carbon cycle sensitivity to temperature. Recent evidence confirms earlier indications that the low CO 2 was caused by increased terrestrial carbon storage. It remains unknown whether the terrestrial biosphere responded to temperature variations, or there was vegetation re-growth on abandoned farmland. Here we present a global numerical simulation of atmospheric carbonyl sulfide concentrations in the pre-industrial period. Carbonyl sulfide concentration is linked to changes in gross primary production and shows a positive anomaly during the Little Ice Age. We show that a decrease in gross primary production and a larger decrease in ecosystem respiration is the most likely explanation for the decrease in atmospheric CO 2 and increase in atmospheric carbonyl sulfide concentrations. Therefore, temperature change, not vegetation re-growth, was the main cause of the increased terrestrial carbon storage. We address the inconsistency between ice-core CO 2 records from different sites measuring CO 2 and Í 13 CO 2 in ice from Dronning Maud Land (Antarctica). Our interpretation allows us to derive the temperature sensitivity of pre-industrial CO 2 fluxes for the terrestrial biosphere (I 3 L = â '10 to â '90 Pg C K â '1), implying a positive climate feedback and providing a benchmark to reduce model uncertainties. © 2016 Macmillan Publishers Limited, part of Springer Nature. All rights reserved.
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被引频次[WOS]:15   [查看WOS记录]     [查看WOS中相关记录]
Document Type: 期刊论文
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Affiliation: CSIRO Oceans and Atmosphere, PMB 1, Aspendale, VIC, Australia; School of Earth Sciences, University of MelbourneVIC, Australia; ARC Centre of Excellence for Mathematics and Statistics of Complex Systems (MASCOS), University of MelbourneVIC, Australia; British Antarctic Survey, Madingley Roa, Cambridge, United Kingdom; Centre for Ocean and Atmospheric Sciences, School of Environmental Sciences, University of East Anglia, Norwich, Norfolk, United Kingdom; Australian Antarctic Division, 203 Channel Highway, Kingston, TAS, Australia; Antarctic Climate and Ecosystems Cooperative Research Centre, University of Tasmania, Hobart, Australia; Australian Nuclear Science and Technology Organisation (ANSTO), PMB 1, Menai, NSW, Australia; Dipartimento di Matematica e Fisica, Seconda Università di Napoli, Viale Lincoln 5, Caserta, Italy

Recommended Citation:
Rubino M.,Etheridge D.M.,Trudinger C.M.,et al. Low atmospheric CO 2 levels during the Little Ice Age due to cooling-induced terrestrial uptake[J]. Nature Geoscience,2016-01-01,9(9)
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