08 Mar 2023
 | 08 Mar 2023
Status: this preprint is open for discussion.

ESD Ideas: A 6-year oscillation in the whole Earth system?

Anny Cazenave, Julia Pfeffer, Mioara Mandea, and Véronique Dehant

Abstract. An oscillation of about 6 years has been reported in Earth’s fluid core motions, magnetic field, rotation, and crustal deformations. Recently, a 6-year cycle has also been detected in several climatic parameters (e.g., sea level, surface temperature, precipitation, land ice, land hydrology, and atmospheric angular momentum). Here we suggest that the 6-year oscillations detected in the Earth’s deep interior, mantle rotation, and atmosphere are linked together, and that the core processes previously proposed as drivers of the 6-year cycle in the Earth’s rotation, cause in addition the atmosphere to oscillate together with the mantle, inducing fluctuations in the climate system with similar periodicities.

Anny Cazenave et al.

Status: open (until 19 Apr 2023)

Comment types: AC – author | RC – referee | CC – community | EC – editor | CEC – chief editor | : Report abuse
  • CC1: 'Comment on egusphere-2023-312', Paul PUKITE, 09 Mar 2023 reply
    • AC1: 'Reply on CC1', Anny Cazenave, 18 Mar 2023 reply

Anny Cazenave et al.

Anny Cazenave et al.


Total article views: 354 (including HTML, PDF, and XML)
HTML PDF XML Total BibTeX EndNote
271 73 10 354 3 2
  • HTML: 271
  • PDF: 73
  • XML: 10
  • Total: 354
  • BibTeX: 3
  • EndNote: 2
Views and downloads (calculated since 08 Mar 2023)
Cumulative views and downloads (calculated since 08 Mar 2023)

Viewed (geographical distribution)

Total article views: 347 (including HTML, PDF, and XML) Thereof 347 with geography defined and 0 with unknown origin.
Country # Views %
  • 1
Latest update: 29 Mar 2023
Short summary
While a 6-year oscillation has been reported for some time in the motions of the fluid outer core of the Earth, in the magnetic field and in the Earth rotation, novel results indicate that the climate system also oscillates at this 6 year frequency. This strongly suggests the existence of coupling mechanisms affecting the Earth system as a whole, from the deep Earth interior to the surface fluid envelopes.