Earth's Climate System Fluctuates in 11-Year and 3.5-Year Cycles
First published: 2021
Brief summary
Analysis of observational data and a large climate model (CESM) finds Earth's climate has intrinsic 11-year and 3.5-year oscillations, out of sync with the solar cycle.
Article
Earth's Climate System Fluctuates in 11-Year and 3.5-Year Cycles is a peer-reviewed published by Climate Dynamics / EurekAlert in 2021. It analyses observational data and a large climate model (CESM) and finds Earth's climate has intrinsic 11-year and 3.5-year oscillations, out of sync with the solar cycle.
Peer-reviewed study published in Climate Dynamics (Feliks, Small & Ghil). It also considers period ~11 yr and ~3.5 yr. It also considers based on two observational datasets + climate model. This gives the cycle claim a specific numerical and evidential setting rather than presenting periodicity only as a visual impression.
The article reports the following result: The Earth's global climate system fluctuates in 11-year and 3.5-year cycles. An analysis of observational data and a large climate model finds Earth's 11-year cycle is out of sync with solar fluctuations, refuting claims of major solar effects on recent climate evolution. The interpretation is strongest when it survives proxy uncertainty, model choice, dating error and comparison with established solar, orbital and ocean-atmosphere forcing.
For cycles researchers, the article brings together intrinsic climate oscillations, 11-year cycle, 3.5-year cycle, climate modelling. It is relevant to climate-cycle research because observed periodicities may arise from orbital forcing, solar variability, ocean-atmosphere dynamics or internal stochastic behaviour.
Because it is a peer-reviewed, the article is a strong starting point for discussion in the Climate & Weather forum, although its conclusions should still be compared with later replications and updated datasets.
Source details and credits
- Source / publisher: Climate Dynamics / EurekAlert
- Source type: Peer-reviewed (journal summary)
- URL type: WWW
- Credits: Climate Dynamics / EurekAlert
- URL: https://www.eurekalert.org/news-releases/927831