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. 2021 Mar 22;11:6550. doi: 10.1038/s41598-021-85894-z

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© The Author(s) 2021

Open Access This article is licensed under a Creative Commons Attribution 4.0 International License, which permits use, sharing, adaptation, distribution and reproduction in any medium or format, as long as you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons licence, and indicate if changes were made. The images or other third party material in this article are included in the article's Creative Commons licence, unless indicated otherwise in a credit line to the material. If material is not included in the article's Creative Commons licence and your intended use is not permitted by statutory regulation or exceeds the permitted use, you will need to obtain permission directly from the copyright holder. To view a copy of this licence, visit http://creativecommons.org/licenses/by/4.0/.

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Seasonal mean surface anthropogenic PM_2.5-OP_tm*(F) and its domestic contributions. Seasonal mean (left) surface air concentrations of anthropogenic PM_2.5-OP_tm*(F) (nmol-DTT min⁻¹ m⁻³) and (right) its domestic contributions over D02 in (top to bottom) the spring, summer, autumn, and winter of 2013. The model terrestrial elevations are depicted in grayscale under the various colors. The map was generated using the Generic Mapping Tools v4.5.7 (https://www.generic-mapping-tools.org).