åå¸å°¾ç¾½å±ï¼ä¹ç§°åå¸å°¾çæ°å±ï¼ä½äºåå¸çä¸é£åï¼è¿ä¸å±ä¸çæ°æµã污æç©ãäºãé¾ãéæ°´åæ°æ¸©çé½ååå¸ä¸å«é¢åè¾¹çå±çå½±å Located downwind of the city, the air flow in this layer, the pollutants, clouds, fog, precipitation and temperature are all affected urban surface and boundary layer.
Methane is further involved in selected chemical reactions in the urban plume relevant in photochemical smog.
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