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Impact of Yellow Dust Transport from Gobi Desert on Fractional Ratio and Correlations of Temporal PM10, PM2.5, PM1 at Gangneung City in Fall
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 Title & Authors
Impact of Yellow Dust Transport from Gobi Desert on Fractional Ratio and Correlations of Temporal PM10, PM2.5, PM1 at Gangneung City in Fall
Lee, Mi-Sook; Chung, Jin-Do;
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Hourly concentrations of , and , were investigated at Gangneung city in the Korean east coast on 0000LST October 26~1800LST October 29, 2003. Before the intrusion of Yellow dust from Gobi Desert, (, ) concentration was generally low, more or less than 20 (10, 5) , and higher PM concentration was found at 0900LST at the beginning time of office hour and their maximum ones at 1700LST around its ending time. As correlation coefficient of and ( and , and and ) was very high with 0.90(0.99, 0.84), and fractional ratios of were 1.37~3.39(0.23~0.54), respectively. It implied that local concentration could be greatly affected by particulate matters of sizes larger than , and concentration could be by particulate matters of sizes smaller than . During the dust intrusion, maximum concentration of (, ) reached 154.57(93.19, 76.05) with 3.8(3.4, 14.1) times higher concentration than before the dust intrusion. As correlation coefficient of and (vice verse, , ) was almost perfect high with 0.98(1.00, 0.97) and fractional ratios of were 0.48~1.25(0.16~0.37), local concentration could be major affected by particulates smaller than both and (fine particulate), opposite to ones before the dust intrusion. After the ending of dust intrusion, as its coefficient of 0.23(0.81, - 0.36) was very low, except the case of and and were 1.13~1.91(0.29~1.90), concentrations of coarse particulates larger than greatly contributed to concentration, again. For a whole period, as the correlation coefficients of , , were very high with 0.94, 1.00 and 0.92, reliable regression equations among PM concentrations were suggested.
Gobi Desert;;;;Yellow dust;Correlation coefficient;Fractional ratio;Regression equation;
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