Urban Surface Ozone Concentration in Mainland China during 2015-2020: Spatial Clustering and Temporal Dynamics.

In the east-west direction (shown by the green line in Figure 2 ), the best-fit trendline of the urban O 3 concentration presented a “J-shaped” curve, where the urban O 3 concentration showed a trend of low in the west and high in the east.

also in 53,322 other papers

In the entire Northern Hemisphere, O 3 pollution in the troposphere exhibits an increasing trend, especially in South and East Asia [ 7 , 8 , 9 , 10 ].

also in 63,971 other papers

The O 3 concentration of cities in mainland China exhibited an increasing trend from 2015 to 2018, and then turned into a decreasing trend after 2018.

also in 47,180 other papers