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. Author manuscript; available in PMC: 2018 Oct 13.
Published in final edited form as: Science. 2017 Oct 13;358(6360):eaam5776. doi: 10.1126/science.aam5776

Fig. 3.

Fig. 3

Schematic showing the specific ocean basins (Niño 3.4, N. Pacific, S. Pacific and Trop. Atlantic) that were analyzed in this study. XCO2 anomalies are calculated for these different ocean basins, and subsequently compared to the XCO2 anomalies from the Niño 3.4 region. Each of these regions was considered to accept/reject a specific hypothesis that could potentially bias the observed trend in the Niño 3.4 XCO2 anomalies. After rejecting these hypotheses, we conclude that the negative XCO2 anomaly observed over the Niño 3.4 during the onset phase of El Niño 2015–2016 is unique and has to be driven by local changes in the ocean fluxes.