Influence of DSSs on Urban Air Quality in China during 2005-2010 and Analysis of a Severe DSS Event

다국어 초록 (Multilingual Abstract)

In each year, Dust and Sandstorms (DSSs) triggered by cold air masses enhance particle concentration over large areas in China during spring and winter. In this paper, daily Air Pollution Index (API) of 113 major cities in China during dust events was analyzed to present the influence of DSSs on urban air quality. From 2005 to 2010, a total of 93 dust events were identified, on average there are approximately 16 dust events in a year. The number of total polluted days caused by DSSs in 113 major cities ranged from 147 to 546 each year, with maximum in 2010 and minimum in 2007. The number of total heavily polluted days caused by DSSs in major cities ranged from 14 to 78 each year, with maximum in 2010 and minimum in 2005. DSSs affected major cities most severely during March to May. Furthermore, a typical DSS observed from 26 to 31May 2008 was described in terms of meteorological features and PM10 concentration as well as API levels of 113 major cities. This event lead to high PM10 concentration and low visibility over major cities, with maximum daily PM10 concentration of 1511 μg m−3 in Chifeng on 28 May, which was directly caused by strong wind in front of surface high pressure system passing through sand source areas in Mongolia and North China. The most severe pollution occurred on 29 May, with 38 cities polluted and 7 cities heavily polluted.

참고문헌 (Reference)

• 1 Kim, K. W., "Visibility impairment during yellow sand periods in the urban atmosphere of Kwangju, Korea" 35 : 5157-5167, 2002
• 2 Chun, Y. S., "Synopsis, transport and physical characteristics of Asian dust in Korea" 106 : 18461-48469, 2001
• 3 Wang, S. G., "Study on the formative causes and countermeasures of the catastrophic sandstorm occurred in northwest China" 15 : 19-30, 1995
• 4 Sun, J., "Spatial and temporal characteristics of dust storms in China and its surrounding regions, 1960-1999: relations to source area and climate" 106 (106): 10325-10333, 1999
• 5 Chun Y. S., "Meteorological features and particulate matter monitoring of the Asian dust (Hwangsa) event observed in Korea on 1 April 2007" 7A : 17-20, 2011
• 6 Duce, R. A., "Long-range atmospheric transport of soil dust from Asia to the tropical North Pacific: temporal variability" 209 : 1522-1524, 1980
• 7 Sokolik, I., "Introduction to special section: outstanding problems in quantifying the radiative impacts of mineral dust" 106 : 18015-18028, 2001
• 8 Singer, A., "Illite in aridic soils, desert dusts and desert loses" 59 : 251-259, 1988
• 9 Zhao, L., "Diagnosis and simulation of a rapidly developing cyclone related to a severe dust storm in East Asia" 52 : 105-120, 2006
• 10 Twomey, S., "Clouds and radiation" 25 : 2435-2442, 1991
• 11 Zhou, Z., "Blowing-sand and sandstorm in China in recent 45 years" 21 : 9-17, 2001
• 12 Duce, R. A., "Atmospheric tracer elements at enewetak atoll: 1. Concentrations, souces, and temporal variability" 88 : 5321-5324, 1983
• 13 Lee, B. K., "Analysis of regional and temporal characteristics of PM10 during an Asian dust episode in Korea" PERGAMON-ELSEVIER SCIENCE LTD 63 : 1106-1115, 2006
• 14 Natsagdorj, L., "Analysis of dust storms observed in Mongolia during 1937-1999" 37 : 1401-1411, 1999
• 15 Bian, H., "Analysis of a severe dust storm event over China: Application of the WRF-Dust Model" 11 : 419-428, 2011
• 16 Takayama, Y., "Aerosol optical thickness yellow sand over the yellow sea derived from NOAA satellite data" 20 : 631-638, 1986
• 17 Mikami, M., "Aeolian dust experiment on climate impact: An overview of Japan-China joint project ADEC" 52 : 142-172, 2006
• 18 Shao Y., "A review on East Asian dust storm climate, modeling and monitoring" 52 : 1-22, 2006