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BC CLEAR Projects 2014-2015 (funding start dates) > Evaluating the Contributions of Reactive Halogens and Unsaturated Biogenic Volatile Organic Compounds to Ozone Depletion Episodes at the Amphitrite Point Observatory

Evaluating the Contributions of Reactive Halogens and Unsaturated Biogenic Volatile Organic Compounds to Ozone Depletion Episodes at the Amphitrite Point Observatory

posted on 7:28 PM, July 6, 2016

Project leader: Hans D. Osthoff

The objective of this project is to investigate the ozone depletion events (ODEs) at Amphitrite Point on the coast of West Vancouver Island, as an improved understanding of the ODE phenomenon is relevant for management of ozone and aerosol formation downwind, such as in the greater Vancouver area.

The University of Calgary's mobile laboratory will be deployed for a three-week intensive campaign from July to August 2015 to quantify mixing ratios of biogenic hydrocarbons (isoprene, monoterpenes and selected oxidation products) by gas chromatography - ion trap mass spectrometry (GC-ITMS) of molecular halogen species by chemical ionization mass spectrometry (CIMS) and by cavity-enhanced absorption spectroscopy (CEAS). Dr. Osthoff and his graduate students will analyze the data set and publish the results in a peer-reviewed atmospheric chemistry journal.

This project will improve the fundamental understanding of chemical processes that influence the abundance of ozone in the marine boundary layer off Vancouver Island, namely the titration of ozone by biogenic hydrocarbons and catalytic cycles involving reactive halogens. This new data set will help improve photochemical models and air quality forecasting ability.

Read the final report.

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About the Fraser Basin Council

The Fraser Basin Council (FBC) is a charitable non-profit organization that brings people together to advance sustainability in the Fraser River Basin and throughout BC. Established in 1997, FBC is a collaboration of four orders of government (federal, provincial, local and First Nations) along with those from the private sector and civil society. We work with people in multiple sectors, helping them find collaborative solutions to today’s issues through a commitment to the social, economic and environmental dimensions of sustainability. Our focus is on healthy water and watersheds, action on climate change and air quality and strong, resilient communities and regions.

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FBC has offices in Vancouver, Kamloops, Williams Lake, Quesnel and Prince George. We also have staff located in Abbotsford and Vernon.

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