Articles | Volume 23, issue 5
https://doi.org/10.5194/acp-23-3267-2023
https://doi.org/10.5194/acp-23-3267-2023
Research article
 | 
14 Mar 2023
Research article |  | 14 Mar 2023

Very-long-period oscillations in the atmosphere (0–110 km) – Part 2: Latitude– longitude comparisons and trends

Dirk Offermann, Christoph Kalicinsky, Ralf Koppmann, and Johannes Wintel

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Cited articles

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Deser, C.: Certain uncertainty: The role of internal climate variability in projections of regional climate change and risk management, Earth's Future, 8, e2020EF001854, https://doi.org/10.1007/s00382-010-0977-x, 2020. 
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Deser, C., Phillips, A. S., Alexander, M. A., and Smoliak, B. V.: Projecting North American climate over the next 50 years: Uncertainty due to internal variability, J. Climate, 27, 2271–2296, 2014. 
Short summary
Atmospheric oscillations with periods between 5 and more than 200 years are believed to be self-excited (internal) in the atmosphere, i.e. non-anthropogenic. They are found at all altitudes up to 110 km and at four very different geographical locations (75° N, 70° E; 75° N, 280° E; 50° N, 7° E; 50° S, 7° E). Therefore, they hint at a global-oscillation mode. Their amplitudes are on the order of present-day climate trends, and it is therefore difficult to disentangle them.
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