Trace Gas and Particulate Observations at the Marine Boundary Layer Site near Ucluelet on Vancouver Island
Abstract
In May 2010, a Marine Boundary Layer (MBL) station was established on the west coast of Vancouver Island near Ucluelet, B.C. Prevailing winds at the station are from the E to SE in the fall and winter and from the W to NW in the spring and summer. Observations of both trace gases (CO, O3, NOx, CO2, SO2...) as well as particulate measurements will be examined for background concentration of this MBL site and a number of interesting events including ozone depletion in the MBL and emission ratios from observed ship plumes both fresh and aged. Ozone concentrations have been observed to be reduced to 10-15ppb in the absence of NOx during the depletion events from background levels. The air measured at the site can be impacted by ships in the shipping lanes that converge into the Juan de Fuca Strait headed for Vancouver and Seattle as well as local fishing vessels. Emission ratios of both aged and fresh plumes will be examined.
- Publication:
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AGU Fall Meeting Abstracts
- Pub Date:
- December 2011
- Bibcode:
- 2011AGUFM.A21A0016S
- Keywords:
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- 0300 ATMOSPHERIC COMPOSITION AND STRUCTURE