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Yearly Changes of Precipitation Component in the Iksan Area
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 Title & Authors
Yearly Changes of Precipitation Component in the Iksan Area
Lee, Kyeong-Bo; Lee, Deog-Bae; Lee, Sang-Bok; Kim, Jae-Duk; Park, Chan-Won;
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This study was carried out to investigate yearly change in the precipitation component and the source strength to acid precipitation at Iksan area from 1997 to 2003. The average ratio of acid precipitation was 70.0% in 1997, 56.3% in 1998 and 36.4% in 2003. On the other hand, it ranged from 6.9 to 19.2% when precipitation was less from 1999 to 2002. The average annual wet depositions of major ionic component in precipitation were calculated by multiplying equivalent concentration by precipitation. The order of major anion component in precipitation was ${SO_4}^{2-}>Cl^->{NO_3}^-$. On the other hand, the concentration of cation component were ${Ca_2}^+>Na^+>{NH_4}^+>{Mg_2}^+>K^+$ in order. The negative correlation was shown between pH and ionic component in precipitation except for . The correlation coefficient between pH and was highly significant as -0.508, which suggests that played important role in increasing the acidity of precipitation. Also the anions such as were highly significant with cations such as . As a result though pH was enable to use the acidity index of precipitation in somewhere, evaluating only pH in precipitation was insufficient as the index to establish corresponding strategy for acid rain.
Acid precipitation;Precipitation characteristics;Iksan area;
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