Abstract
Using a coupled climate model of intermediate complexity including oxygen 18, CLIMBER‐2, we investigate the evolution of the distribution of surface water 18O composition under warm climate conditions. We then determine the impact of changes of the surface water 18O distribution on ocean surface temperatures inferred from calcite oxygen 18. Our results show that published temperature reconstructions based on oxygen 18 from calcite are systematically biased by 2° to 4°C in the absence of major oceanic circulation changes and up to 7°C in the presence of major oceanic circulation changes. As the bias introduced is shown to vary with latitude, our work has major implications on past latitudinal temperature gradient reconstructions based on oxygen 18 measurements.
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
