HR: 0800h
AN: A51E-0117    [Abstracts]
TI: Reactive Gases And Soluble Ions Of Fine Aerosols (PM2.5) During ABC-EAREX 2005
AU: * Song, M
EM: mjsong81@hotmail.com
AF: Meehye Lee, Asan Science building 603, Anamdong-5ga, Seongbuk-gu, Seoul, 136-701 Korea, Republic of
AB: The chemical composition of aerosols(SO₄^-2, NO₃^-, NH₄⁺) and the concentrations of trace gases(O₃, CO, NO, SO₂, H₂O₂) were measured at Gosan in Jeju Island, Korea, during March 5 to 29, as a part of the Atmospheric Brown Clouds-East Asian Regional Experiment 2005 (ABC-EAREX 2005).
In general, photochemical byproducts such as O₃ and H₂O₂ remained low. Partially, H₂O₂ concentrations frequently fell below detection limit. During the campaign, westerly prevailed in Jeju Island and two dust events were observed. Upon dust incidents, the concentrations of trace gases such as SO₂, NO, CO and aerosols were rapidly increased. Also, the ratio of nss-SO₄ to SO₂ was found to be related to dust outbreaks and H₂O₂ concentrations. Detailed discussion will be presented in the meeting.
UR: http://atmos.korea.ac.kr
DE: 0305 Aerosols and particles (0345, 4801, 4906)
DE: 0312 Air/sea constituent fluxes (3339, 4504)
DE: 0365 Troposphere: composition and chemistry
DE: 0368 Troposphere: constituent transport and chemistry
SC: Atmospheric Sciences [A]
MN: Fall Meeting 2005