82问答网 > 环境空气质量现状监测对风速有要求吗

环境空气质量现状监测对风速有要求吗

2025-03-15 06:27:55
推荐回答（2个）
回答1：

一般在测量噪声时有风速的要求，应小于5m／s(或小于四级) 。

回答2：

一般情况下在主导风向的下风向污染物浓度较高，上风向和偏风向向上污染物浓度较低。风速越大，污染物扩散越快越充分，监测结果偏低，但对TSP河PM10，风速大时，会造成地面扬尘的增加，使结果偏高。此种情况在干旱少雨的北方春季尤为明显。

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