Critical transition of urban ozone formation regime in the North China Plain (IMAGE)
Caption
Spatial distribution of ozone formation regimes across 37 cities in the North China Plain during June–August 2021. Daytime relative incremental reactivity (RIR) values for the major O3 precursors in each city were distributed around the map. Cities colors on the map and undertones of the surrounding box plots denote VOC-limited (dark orange) and VOC–NOx co-limited (light orange) regimes, respectively.
Credit
© Likun Xue
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