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자료유형
학술저널
저자정보
저널정보
한국대기환경학회 한국대기환경학회지(영문) 한국대기환경학회지 제19권 제E3호
발행연도
2003.9
수록면
99 - 120 (22page)

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초록· 키워드

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Visibility impairment in an urban area is mainly caused by airborne fine particulate matters. Visibility in a clean air environment is more sensitive to the change of PM2.5 particle concentrations. However, a proportionally larger reduction in fine particle concentration is needed to achieve a small increment of visibility improvement in polluted areas. Continuous optical monitoring of atmospheric visibility and extensive aerosol measurements have been made in the urban atmosphere of Kwangju, Korea. The mean for fine particulate mass from 1999 to 2002 at Kwangju was measured to be 23.6±20.3㎛/㎥. The daily average seasonal visual range was measured to be 13.1, 9.2, 11.0, and 13.9 km in spring, summer, fall, and winter, respectively. The mean light extinction budgets by sulfate, nitrate, organic carbon, and elemental carbon aerosol were observed to be 27, 14, 22, and 12%, respectively. It is highly recommended that a new visibility standard and/or a fine particle standard be established in order to protect the health and welfare of general public. Much more work needs to be done in visibility studies, including long-term monitoring of visibility, improvement of visibility models, and formulating integrated strategies for managing fine particles to mitigate the visibility impairment and climate change.

목차

1. INTRODUCTION
2. RULES AND REGULATIONS
3. PM‘s IMPACT ON HUMAN HEALTH, VISIBILY, AND CLIMATE
4. VISIBILTY THEORY
5. SIGNIFICANCE OF SECONDARY ORGANIC AEROSOL(SOA)
6. CHARACTERISTICS OF VISIBILITY IMPAIRMENT IN KOREA
7. VISIBILTY MODELING
8. CONCLUSION
REFERENCES

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