Articles | Volume 18, issue 4
Clim. Past, 18, 713–738, 2022
Clim. Past, 18, 713–738, 2022
Research article
08 Apr 2022
Research article | 08 Apr 2022

Secular and orbital-scale variability of equatorial Indian Ocean summer monsoon winds during the late Miocene

Clara T. Bolton et al.


Interactive discussion

Status: closed

Comment types: AC – author | RC – referee | CC – community | EC – editor | CEC – chief editor | : Report abuse
  • RC1: 'Comment on cp-2021-77', David De Vleeschouwer, 13 Jul 2021
  • RC2: 'Comment on cp-2021-77', Mitch Lyle, 28 Aug 2021

Peer review completion

AR: Author's response | RR: Referee report | ED: Editor decision
ED: Reconsider after major revisions (23 Oct 2021) by Arne Winguth
AR by Clara Bolton on behalf of the Authors (25 Oct 2021)  Author's response    Author's tracked changes    Manuscript
ED: Referee Nomination & Report Request started (19 Dec 2021) by Arne Winguth
RR by David De Vleeschouwer (20 Dec 2021)
ED: Publish as is (09 Mar 2022) by Arne Winguth
Short summary
The timing of the initiation and evolution of the South Asian monsoon in the geological past is a subject of debate. Here, we present a new age model spanning the late Miocene (9 to 5 million years ago) and high-resolution records of past open-ocean biological productivity from the equatorial Indian Ocean that we interpret to reflect monsoon wind strength. Our data show no long-term intensification; however, strong orbital periodicities suggest insolation forcing of monsoon wind strength.