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CO, O 3 , and VOC results during 2004 Okinawa campaign. Shungo Kato, Yoshizumi Kajii Tokyo Metropolitan University. Moshiri. CO and O3 seasonal variation at Okinawa. winter. summer. summer. Trajectory trend at Okinawa. Pollutant gas transport during winter
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CO, O3, and VOC results during 2004 Okinawa campaign Shungo Kato, Yoshizumi Kajii Tokyo Metropolitan University
CO and O3 seasonal variation at Okinawa winter summer summer
Pollutant gas transport during winter Okinawa - Ogasawara comparison Okinawa (Hedo) November,December 2000 Ogasawara (Chichi-jima) December 1999
Ogasawara measurements Ogasawara O3 Ogasawara 1999
Transport time and HC concentration at Okinawa and Ogasawara December Okinawa 2000 Ogasawara 1999
CO, O3, and VOC measurements during the 2004 spring campaign at Hedo Cape Hedo HV CO, O3 Hg AMS Nep Okinawa island
CO, O3 instruments CO : TEI model 48C Infrared absorption O3 : TEI model 49 UV absorption
Seasonal variation of CO and O3 at HEDO winter winter winter summer summer summer
CO and O3 during Hedo campaign Short span change Long span change
China Korea Japan
CO and air mass origin China Korea Japan marine
High O3 High CO 1 2 3 4 5 6 KCJ J C KJ CKJ
VOC measurements Canister sampling ; every 2 days, total 21 samples Analyzed by concentrator + GC-FID or GC-MS
Analyzed species Alkane ethane propane butane pentane hexane ... Alkene ethylene propylene … acetylene Aromatics benzene toluene xylenes ... Halocarbon CH3Cl CH3Br C2Cl4 CH2Cl2 ... Others DMS (CH3CN) (acetone) (CH3CHO) (CH3OH) ...
Correlation between acetylene Acetylene : indicator of combustion Anthropogenic VOC : good correlation between acetylene C2Cl4 : urban indicator CH3CN : biomass burning indicator also urban source ?
Correlation between acetylene CH3Cl, CH3Br : biomass burning indicator plants and ocean sources
Acetone : slightly higher in polluted air CH3CHO : local photochemistry
CO, acetylene, C2Cl4 acetylene C2Cl4