2006년 4월 안면도에서 발생한 황사, 안개, 청명, 구름 사례에 대한 에어러솔 특성 분석
A case study of aerosol features of Asian dust, fog, clear sky, and cloud at Anmyeon Island in April 2006
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The aerosol characteristics in terms of 4 different cases (Asian dust, fog, clear sky and cloud) which had happened at Anmyeon Island in April 2006 were studied using various measurements such as the Micro Pulse Lidar (MPL), sunphotometer, β-ray PM10 Analyzer, anemoscope and anemometer. In addition, synoptic charts, back trajectory analyses and satellite images were also used to help characterize the aerosol events. The aerosol optical properties were featured by the Aerosol Optical Depth (AOD) and Ångström exponent which were estimated by the sunphotometer. When Anmyeon Island was dominated by the Asian dust, the AOD was sharply increased as seven times as a yearly average of it (0.35). As compared with a yearly average of the Ångström exponent of 0.97, the Ångström exponent of a dust day was significantly low (0.099). In addition, PM10 mass concentration showed an extremely high record. The maximum concentration reached 1790.5 μg m-³ on 8 April 2006. The maximum mass concentration was shown with delay when the wind speed of 0 m s-¹ was observed. It was also found that a satellite image of the MODIS-RGB had a good agreement with the results of those measurements. It was shown that the MPL was able to describe effectively the vertical distribution of aerosol for all the cases. In particular, the MPL evidently captured the aerosol layer before the cloud observation. The aerosol layer was similarly described by the AOD. On a clear sky day, the AOD had not only a very low value (0.054) but also a feature of homogeneity.
Abstract
The aerosol characteristics in terms of 4 different cases (Asian dust, fog, clear sky and cloud) which had happened at Anmyeon Island in April 2006 were studied using various measurements such as the Micro Pulse Lidar (MPL), sunphotometer, β-ray PM10 Analyzer, anemoscope and anemometer. In addition, synoptic charts, back trajectory analyses and satellite images were also used to help characterize the aerosol events. The aerosol optical properties were featured by the Aerosol Optical Depth (AOD) and Ångström exponent which were estimated by the sunphotometer. When Anmyeon Island was dominated by the Asian dust, the AOD was sharply increased as seven times as a yearly average of it (0.35). As compared with a yearly average of the Ångström exponent of 0.97, the Ångström exponent of a dust day was significantly low (0.099). In addition, PM10 mass concentration showed an extremely high record. The maximum concentration reached 1790.5 μg m-³ on 8 April 2006. The maximum mass concentration was shown with delay when the wind speed of 0 m s-¹ was observed. It was also found that a satellite image of the MODIS-RGB had a good agreement with the results of those measurements. It was shown that the MPL was able to describe effectively the vertical distribution of aerosol for all the cases. In particular, the MPL evidently captured the aerosol layer before the cloud observation. The aerosol layer was similarly described by the AOD. On a clear sky day, the AOD had not only a very low value (0.054) but also a feature of homogeneity.
참고문헌 (16)
- 지구대기감시보고서, "기상청", 51~57 (2007)
- 지구대기감시관측소, "라이다 운영 관련 매뉴얼", 13~ (2000)
- Bosenberg, J., "EARLINET: A European Aerosol Research Lidar Network", Advances in Laser Remote Sensing, Selected papers from the 20th International Laser Radar Conference, pp.155~158 (2001)
- Campbell, J.R., "Full-time, Eye-Safe Cloud and Aerosol Lidar Observation at Atmospheric Radiation Measurement Program Sites: Instrument and Data Processing", J. Atmos. Oceanic Technol., 19, pp.431~442 (2002)
- Charlson, R. J., "Climate forcing by anthropogenic aerosol", Science, 255, pp.423~430 (1992)
- Chun-Ho Cho, "Atmospheric Carbon Dioxide Variations at Korea GAW Center from 1999 to 2006", 한국기상학회지, 43(4), pp.359~365 (2007), 한국기상학회
- Dubovik, O., "Variability of Absorption and Optical Properties of Key Aerosol Types Observes in Worldwide Locations", J. Atmos. Sci., 59, pp.590~608 (2002)
- EKO Incorporation, "Sunphotometer Instruction Manual", 15~ (2000)
- Heintzenberg, J., "Measurements and modeling of aerosol single scattering albedo: Progress, problems and prospects", Beitr. Phys. Atmos., 70, pp.249~263 (1997)
- Holben, B. N., "An emerging ground-based aerosol climatology: aerosol optical depth from AERONET", J. Geophys. Res., 106, pp.12067~12097 (2001)
- Houghton, J. T., "Climate Change 1995: The Science of Climate Change, In Intergovernmental Panel on Climate Change", pp.552~ (1995), Cambridge university Press
- Houghton, J. T., "The Scientific Basis Contribution of Working Group I to the Third Assessment Report of the Intergovernmental Panel on Climate Change (IPCC), Intergovernmental Panel on Climate Change" (2001), Cambridge university Press
- Huebert, B. J., "An overview of ACE-Asia: Strategies for quantifying the relationships between Asian aerosols and their climatic impacts", J. Geophys. Res., 108(D23), pp.8633~ (2003)[DOI]
- Murayama, T., "Ground-based network observation of Asian dust events of April 1998 in East Asia", J. Geophys. Res., 106, pp.18345~13360 (1998)
- Schwartz, S. E., "The Whitehouse Effect-Shortwave Radiative Forcing of Climate by Anthropogenic aerosols", J. Aerosol Sci., 27, pp.359~382 (1996)
- Tegen, I., "The influence on climate forcing of mineral aerosols from disturbed soils", Nature, 380, pp.419~422 (1996)