Relationship between the Formation of PM<sub>2.5</sub> and Meteorological Factors in Northern China: The Periodic Characteristics of Wavelet Analysis

<div>Time series of visibility and each pollutant from January 1 to 10, 2016. (a) RH: relative humidity (%); (b) CO (mg/m<sup>3</sup>); (c) PM<sub>2.5</sub> (<i>μ</i>g/m<sup>3</sup>); (d) PM<sub>10</sub> (<i>μ</i>g/m<sup>3</sup>).</div>

Advances in Meteorology

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Figure 11

Figure 11: Relationship between the Formation of PM<sub>2.5</sub> and Meteorological Factors in Northern China: The Periodic Characteristics of Wavelet Analysis 

Figure 11 | Relationship between the Formation of PM2.5 and Meteorological Factors in Northern China: The Periodic Characteristics of Wavelet Analysis 