Climate of the Past
Climate of the Past
CP
Articles | Volume 13, issue 10
Articles | Volume 13, issue 10
https://doi.org/10.5194/cp-13-1323-2017
© Author(s) 2017. This work is distributed under
the Creative Commons Attribution 4.0 License.
https://doi.org/10.5194/cp-13-1323-2017
© Author(s) 2017. This work is distributed under
the Creative Commons Attribution 4.0 License.
Articles | Volume 13, issue 10
Research article
 | 
11 Oct 2017
Research article |  | 11 Oct 2017

Does δ18O of O2 record meridional shifts in tropical rainfall?

Alan M. Seltzer, Christo Buizert, Daniel Baggenstos, Edward J. Brook, Jinho Ahn, Ji-Woong Yang, and Jeffrey P. Severinghaus

Supplement

https://doi.org/10.5194/cp-13-1323-2017-supplement

Data sets

WAIS Divide d18Oatm and Siple Dome/WAIS Divide composite and individual delta epsilon LAND A. Seltzer, D. Baggenstos, C. Buizert, J. Severinghaus, and R. Beaudette https://doi.org/10.15784/601041

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Short summary
To explore whether the oxygen-18 to oxygen-16 ratio of atmospheric O2 is sensitive to the position of the tropical rain belts, we (1) present a record of ice core bubble oxygen isotope measurements from two Antarctic ice cores, and (2) examine the sensitivity of oxygen isotopes in precipitation, weighted by photosynthesis, to the location of oxygen production over the modern-day seasonal cycle. We find a strong modern relationship and discuss implications for past shifts in tropical rainfall.
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