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. 2023 Jul 21;9(29):eadg7429. doi: 10.1126/sciadv.adg7429

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Fig. 1. — The 2019 emissions are derived from the MEIC (Multi-resolution Emission Inventory for China) emission inventory model, and the emission results from 2020 to 2022 are derived from the TROPOMI-constrained inversion estimates. (A) presents the 10-day moving average NO_x emissions and (C) presents the changes in NO_x emissions from 2019 to 2020, 2021, and 2022, respectively. (B and D) are plotted for CO₂ as (A) and (C). The vertical dashed lines refer to the Chinese Spring Festival Day in different years. The gray shadings in (A) and (B) correspond to the 2020 lockdown and the 2022 lockdown periods, respectively.