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. 2020 Jun 13;8(6):nwaa132. doi: 10.1093/nsr/nwaa132

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© The Author(s) 2020. Published by Oxford University Press on behalf of China Science Publishing & Media Ltd.

This is an Open Access article distributed under the terms of the Creative Commons Attribution License (http://creativecommons.org/licenses/by/4.0/), which permits unrestricted reuse, distribution, and reproduction in any medium, provided the original work is properly cited.

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Figure 5. — Comparison of ENSO-induced O₃ anomalies from biomass burning in the Indochinese Peninsula and Indonesia in spring. Averaged response of the total column O₃ (TCO) below 200 hPa to averaged BB emissions from the Indochinese Peninsula (a) and Indonesia (b) in El Niño and La Niña springs. (c–e) Cross-section of O₃ anomalies averaged over 15°N–25°N caused by ENSO-induced circulation differences (with climatologically averaged BB emission intensity). (d–f) Cross-section of averaged O₃ anomalies by ENSO-related BB emission differences over the Indochinese Peninsula (d) and Indonesia (f). Source regions are denoted by blue polygons. Red circles mark the location of MLO. Source contributions were calculated as listed in Supplementary Table 1.