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Climate of the Past An interactive open-access journal of the European Geosciences Union
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The Atlantic Multidecadal Oscillation (AMO) is prominent in the climate system. We study the AMO over the last 2000 years using a novel proxy framework, the Last Millennium Reanalysis. We find that the AMO is linked to continental warming, Arctic sea ice retreat, and an Atlantic precipitation shift. Low clouds decrease globally. We find no distinct multidecadal spectral peak in the AMO over the last 2 millennia, suggesting that human activities may have enhanced the AMO in the modern era.
CP | Articles | Volume 14, issue 2
Clim. Past, 14, 157–174, 2018
https://doi.org/10.5194/cp-14-157-2018
Clim. Past, 14, 157–174, 2018
https://doi.org/10.5194/cp-14-157-2018

Research article 09 Feb 2018

Research article | 09 Feb 2018

Insights into Atlantic multidecadal variability using the Last Millennium Reanalysis framework

Hansi K. A. Singh et al.

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Cited articles

Bellucci, A., Mariotti, A., and Gualdi, S.: The role of forcings in the 20th century North Atlantic Multidecadal Variability: the 1940–1975 North Atlantic cooling case study, J. Climate, 16, 7317–7337, 2017. a, b
Bjerknes, J.: Atlantic air–sea interaction, Adv. Geophys., 10, 1–82, 1964. a
Booth, B., Dunstone, N., Halloran, P., Andrews, T., and Bellouin, N.: Aerosol implicated as a prime driver of twentieth-century North American climate variability, Nature, 484, 228–232, 2012. a, b, c
Chylek, P., Folland, C., Lesins, G., Dubey, M., and Wang, M.: Arctic air temperature change amplification and the Atlantic Multidecadal Oscillation, Geophys. Res. Lett., 36, L14801, https://doi.org/10.1029/2009GL038777, 2009. a
Chylek, P., Folland, C., Dijkstra, H., Lesins, G., and Dubey, M.: Ice-core data evidence for a prominent near 20 year time-scale of the Atlantic Multidecadal Oscillation, Geophys. Res. Lett., 3, L13704, https://doi.org/10.1029/2011GL047501, 2011. a
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Short summary
The Atlantic Multidecadal Oscillation (AMO) is prominent in the climate system. We study the AMO over the last 2000 years using a novel proxy framework, the Last Millennium Reanalysis. We find that the AMO is linked to continental warming, Arctic sea ice retreat, and an Atlantic precipitation shift. Low clouds decrease globally. We find no distinct multidecadal spectral peak in the AMO over the last 2 millennia, suggesting that human activities may have enhanced the AMO in the modern era.
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