지원사업
학술연구/단체지원/교육 등 연구자 활동을 지속하도록 DBpia가 지원하고 있어요.
커뮤니티
연구자들이 자신의 연구와 전문성을 널리 알리고, 새로운 협력의 기회를 만들 수 있는 네트워킹 공간이에요.
초록· 키워드
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In this study, we compared light-absorption properties of aerosols observed in East and South Asia from black carbon (BC) mass concentration, aerosol scattering (σ<SUB>s</SUB>) and absorption (σ<SUB>a</SUB><SUB></SUB>) coefficients measurements at four sites: Korea Climate Observatory-Gosan (KCO-G), Korea Climate Observatory-Anmyeon (KCO-A), Maldives Climate Observatory-Hanimaadhoo (MCO-H) and Nepal Climate Observatory-Pyramid (NCO-P). No significant seasonal variations of BC mass concentration, σ<SUB>s</SUB> and σ<SUB>a</SUB>, despite of wet removal of aerosols by precipitation in summer, were observed in East Asia, whereas dramatic changes of lightabsorbing aerosol properties were observed in South Asia between dry and wet monsoon periods. Although BC mass concentration in East Asia is generally higher than that observed in South Asia, BC mass concentration at MCO-H during winter dry monsoon is similar to that of East Asia. The observed solar absorption efficiency (α) at 550 nm, where α = σ<SUB>a</SUB>/(σ<SUB>s</SUB> + σ<SUB>a</SUB>), at KCO-G and KCO-A is higher than that in MCO-H due to large portions of BC emission from fossil fuel combustion. Interestingly, α at NCO-P is 0.14, which is two times great than that in MCO-H and is about 40% higher than that in East Asia, though BC mass concentration at NCO-P is the lowest among four sites. Consistently, the highest elemental carbon to sulphate ratio is found at NCO-P.
목차
Abstract
1. 서론
2. 관측 지점 및 관측 자료
3. 결과 및 토의
4. 요약 및 결론
감사의 글
참고문헌
참고문헌 (27)
참고문헌 신청
1. [학술지(정기간행물)] - Alexander, D.T.L. / 2008 / Brown carbon spheres in east Asian outflow and their optical properties / Science 321 : 833 ~ 836
2. [학술지(정기간행물)] - Anderson, T.L. / 1996 / Performance characteristics of a high-sensitivity, three wavelength, total scatter/backscatter nephelometer / Journal of Atmospheric and Oceanic Technology 13 (5) : 967 ~ 986
3. [학술지(정기간행물)] - Arnott, W. P. / 2005 / Towards aerosol light-absorption measurements with a 7-wavelength aethalometer: evaluation with a photoacoustic instrument and 3- wavelength nephelometer / Aerosol Sci. Tech 39 : 17 ~ 29
4. [학술지(정기간행물)] - Bohner, J. / 2006 / General climatic controls and topoclimatic variations in Central and High Asia / BOREAS 35 : 279 ~ 294
5. [학술지(정기간행물)] - Bonasoni, P. / 2010 / Atmospheric Brown Clouds in the Himalayas: first two years of continuous observations at the Nepal-Climate Observatory at Pyramid (5079 m) / Atmos. Chem. Phys 10 : 7515 ~ 7531
2. [학술지(정기간행물)] - Anderson, T.L. / 1996 / Performance characteristics of a high-sensitivity, three wavelength, total scatter/backscatter nephelometer / Journal of Atmospheric and Oceanic Technology 13 (5) : 967 ~ 986
3. [학술지(정기간행물)] - Arnott, W. P. / 2005 / Towards aerosol light-absorption measurements with a 7-wavelength aethalometer: evaluation with a photoacoustic instrument and 3- wavelength nephelometer / Aerosol Sci. Tech 39 : 17 ~ 29
4. [학술지(정기간행물)] - Bohner, J. / 2006 / General climatic controls and topoclimatic variations in Central and High Asia / BOREAS 35 : 279 ~ 294
5. [학술지(정기간행물)] - Bonasoni, P. / 2010 / Atmospheric Brown Clouds in the Himalayas: first two years of continuous observations at the Nepal-Climate Observatory at Pyramid (5079 m) / Atmos. Chem. Phys 10 : 7515 ~ 7531
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UCI(KEPA) : I410-ECN-0101-2013-453-000799215