This paper described the actual condition of acid rain and snow and their influence of a winter monsoon in Kashiwazaki city. For 7 months from September in 2001 to March in 2002, the pH value was measured in rain or snow. The minimum of pH value observed was 3.9 for the 7 months. The day which observed pH<5.6 was 87% of all the observed days.
Medical Subject Headings: human activities
free text keywords: acid rain and snow, pH, monsoon