四川盆地不同区域城市降水过程对PM2.5清除作用分析
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林丹, 郭晓梅, 王维佳
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Analysis on scavenging effect of precipitation processes on PM2.5 in different cities of Sichuan Basin
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LIN Dan, GUO Xiaomei, WANG Weijia
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表3 The mean scavenging rates of the negative and positive scavenging processes with different precipitation durations under different air qualities in Sichuan Basin during 2016-2021 单位：%
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| Tab.3 |
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| 城市 | 负清除过程 | 正清除过程 | | 优 | 良 | 污染 | 优 | 良 | 污染 | | ≤3 h | >3 h | ≤3 h | >3 h | ≤3 h | >3 h | ≤3 h | >3 h | ≤3 h | >3 h | ≤3 h | >3 h | | 成都 | -21.4 | -30.5 | -13.4 | -16.0 | -7.2 | -9.0 | 21.5 | 25.3 | 16.3 | 24.7 | 11.5 | 26.1 | | 达州 | -23.5 | -23.5 | -16.3 | -14.3 | -9.8 | -18.6 | 18.1 | 25.4 | 16.7 | 31.6 | 12.6 | 29.6 | | 乐山 | -25.1 | -31.3 | -13.4 | -12.5 | -4.8 | — | 19.9 | 33.2 | 19.2 | 33.6 | 17.5 | 39.7 | | 绵阳 | -22.8 | -32.5 | -12.1 | -13.0 | -6.2 | -7.8 | 17.6 | 25.9 | 13.4 | 25.0 | 12.6 | 24.3 | | 宜宾 | -24.8 | -24.5 | -12.6 | -11.6 | -9.2 | -6.5 | 20.1 | 31.6 | 18.0 | 35.8 | 14.6 | 36.5 | | 盆地 | -23.5 | -28.5 | -13.6 | -13.5 | -7.4 | -10.5 | 19.4 | 28.3 | 16.7 | 30.1 | 13.7 | 31.2 |
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