Fire/Pollution Sources

Determining the potential sources of enhancement to tropospheric ozone by using back trajectories and fire maps Determining the potential sources of enhancement to tropospheric ozone by using back trajectories and fire maps Broken down into 3 general categories Broken down into 3 general categories Siberian FiresSiberian Fires Asian Pollution/California FiresAsian Pollution/California Fires Canadian FiresCanadian Fires

Fire/Pollution Sources Siberian Fires Siberian Fires Any back trajectory that passes over a fire in the Siberia region (primarily fires in extreme eastern Russia)Any back trajectory that passes over a fire in the Siberia region (primarily fires in extreme eastern Russia) Asian Pollution/California Fires Asian Pollution/California Fires Any back trajectory that passes over a major city in southern Asia would be considered (which rarely occurred)Any back trajectory that passes over a major city in southern Asia would be considered (which rarely occurred) Any back trajectory that passes over a fire in CA (primarily located in northern CA)Any back trajectory that passes over a fire in CA (primarily located in northern CA) Canadian Fires Canadian Fires Any back trajectory that passes over a fire in Canada (primarily western Canada)Any back trajectory that passes over a fire in Canada (primarily western Canada)

Siberian Fires Global Fire Monitoring Center: Fire/Pollution Sources

Siberian Fires (map of Russia) Global Fire Monitoring Center: Fire/Pollution Sources

Canadian and California Fires US Forest Service & Google Earth:

Fire/Pollution Sources NWSWNE  Locations are broken down geographically

Average Tropospheric Ozone NWSWNE

Comparisons Several comparisons can be made: some ideas Several comparisons can be made: some ideas RegionalRegional LatitudinalLatitudinal Proximity to pollution/fire sourcesProximity to pollution/fire sources Others?Others? Latitudinal Example: Latitudinal Example: Trinidad Head, California: 40.8 N, WTrinidad Head, California: 40.8 N, W Yarmouth, Nova Scotia: 43.9 N, 66.1 WYarmouth, Nova Scotia: 43.9 N, 66.1 W The following slides will compare these locations The following slides will compare these locations

Sources Trinidad Head: Siberian & Asian/CA only Yarmouth: Canadian only

Average Tropospheric Ozone Trinidad Head Yarmouth

Summary/Conclusions Trinidad Head: Trinidad Head: Influenced by Siberian and CA fires and Asian pollutionInfluenced by Siberian and CA fires and Asian pollution Average ozone: DUAverage ozone: DU Advected (other): DU (47.6 %)Advected (other): DU (47.6 %) Yarmouth: Yarmouth: Influenced by Canadian FiresInfluenced by Canadian Fires Average Ozone: DU (second most amongst all sites)Average Ozone: DU (second most amongst all sites) Advected (other): DU (55.2 %) (most of any site)Advected (other): DU (55.2 %) (most of any site) Conclusions: Conclusions: Canadian fires may have a stronger influence on tropospheric ozone than Siberian fires and Asian pollution/CA fires on these locationsCanadian fires may have a stronger influence on tropospheric ozone than Siberian fires and Asian pollution/CA fires on these locations The stronger influence is represented by the much higher advected ozone levels and percentages in YarmouthThe stronger influence is represented by the much higher advected ozone levels and percentages in Yarmouth Others?Others?