Fig. 2: Comparison of meteorological and anthropogenical trends of monthly MDA8 O3 anomalies in springtime in 2013–2022.
From: Rapid increase in spring ozone in the Pearl River Delta, China during 2013-2022
a Region-scale MDA8 O3 anomalies averaged from all available sites. b City-scale MDA8 O3 anomalies averaged from all available sites for each city. The black frame represents the observed trend. The red and blue bars indicate meteorological and anthropological contributions, respectively. c Site-scale MDA8 O3 anomalies caused by the meteorological change. d Same with (c) but for the anthropogenic driven pattern. Statistically significant trends above the 90% confidence level are marked with black dots. Trend values for each site are detailed in Supplementary Table 2.
