|
KMID : 1024520020110070669
|
|
Journal of the Environmental Sciences
2002 Volume.11 No. 7 p.669 ~ p.677
|
|
|
Role of Transport on Aerosol Concentration at Crater Lake, Oregon USA
|
|
Jeon Byung-Il
|
|
|
Abstract
|
|
|
|
This study was conducted to investigate the characteristics of role of transport on aerosol concentration at Crate Lake, Oregon USA for 1988.3~1999. 5. The IMPROVE program is a cooperative measurement effort governed by a steering committee composed of representatives from USA federal and regional-state organizations. Also IMPROVE sampler is designed to obtain a complete signature of the composition of the airborne particles affecting visibility. According to 10-day backward isentropic trajectory analysis, the frequency of local, marine and Asian trajectory showed 33.1%(335 cases), 47%(478 cases), 5.2%(53 cases) respectively. The monthly variation of nss , nss S, , K and C showed the double peak pattern, high in April~May and August~september and showed the lowest concentration in Winter. The other constituents concentration except for Cl , Na, Mg was high in local trajectory than marine trajectory. A ratio nss to was 90.5% in marine trajectory and 98% in local trajectory. It suggest that the aerosol in Crater Lake was effected by salt. The annual mean concentration of nss and nss S decreased but the springtime concentration increased.
|
|
|
KEYWORD
|
|
|
IMPROVE program, Crater Lake, aerosol, 10-day backward isentropic trajectory
|
|
|
FullTexts / Linksout information
|
|
|
|
|
|
Listed journal information
|
|
|
|