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环境科学学报 2009
Marked changes of acid rain in Hefei and their causes
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Abstract:
The annual and seasonal characteristics of acid rain in Hefei and their relationships with the surface weather conditions and pollutant concentrations were analyzed using rainwater monitoring data from 1992 to 2007.Back-trajectory and cluster analyses were used to study the relationships between acid rain frequency and transport patterns at different altitudes.The results show that the frequency of acid rain was highest in autumn,and lowest in summer.The annual average pH tended to decrease,and the frequenc...
