Study on the Precursor Signal Capturing of Unfavorable Weather: Months/Years in Advance to Ultra-Early Forecast for Hourly Transient Weather Changes during the Beijing Winter Olympics

<div>Hourly distributions of visibility and fog–haze pollution in Zhangjiakou for February 1–28, (a) 2017 and (c) 2021; hourly observed distributions of PM<sub>2.5</sub>, O<sub>3</sub>, NO<sub>2</sub>, SO<sub>2</sub>, the PLAM index, and low-level atmospheric supersaturation(S) for February 1–28, (b) 2017 and (d) 2021.</div>

Advances in Meteorology

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Figure 4

Figure 4: Study on the Precursor Signal Capturing of Unfavorable Weather: Months/Years in Advance to Ultra-Early Forecast for Hourly Transient Weather Changes during the Beijing Winter Olympics 

Figure 4 | Study on the Precursor Signal Capturing of Unfavorable Weather: Months/Years in Advance to Ultra-Early Forecast for Hourly Transient Weather Changes during the Beijing Winter Olympics 