Aircraft Observations of Siberian Smoke Plumes Transported to the Pacific Northwest Presented by Isaac Bertschi

Overview of Long-Range Transport Studies PHOBEA (1997, 98, 99, 2001, 02) ACE-Asia (2001) PEACE (2002) ITCT (2002) PEM-West A (1991) TRACE-P (2001) CITE-2 (1986) BIBLE (2000) CITE-1 (1983) PEM-West B (1994) MLOPEX (1989, 91, 92)

Airborne Measurement Platform Beechcraft Duchess 76 Continuous Measurements RF-UV CO Analyzer Integrating Nephelometer UV Ozone and ECC Instruments Temp/RH/GPS

Cheeka Peak Observatory 48.3 N, 124.6 W, 480 meters (asl)

Synopsis of Summer 2003 Observations

Synopsis of Summer 2003 Observations Flights 1 and 2: 27 May and 2 June, 2003 (Julian Days: 148 and 154)

Synopsis of Summer 2003 Observations Flight 9: 5 August, 2003 (Julian Day: 217)

2 June Event

2 June 2003 Event: Fire Detection and Smoke Transport 5/24/2003

5 August Event

5 Aug 2003 Event: Fire Detection and Smoke Transport 7/27/2003

Pollutant Enhancements during the 2003 Case Studies:

GEOS-CHEM Mean enhancements in CO and O3 surface concentrations from 1 June – 31 Aug due to 2003 Siberian fires.

Ozone Observations in the Puget Sound Region PSCAA Observations at Enumclaw, WA

Aerosol Observations in the Puget Sound Region

Future Research Goals/Work Conclusions From May - August 2003, biomass burning in the Asian boreal zone was a major source of the LRT events observed in the NE Pacific troposphere. Under certain circumstances, Siberian fire emissions can be a significant source of elevated O3, CO and aerosols in western North America. Summer 2005: Summer urban smog study with WSU. ITCT/PHOBEA Spring 2006. Airborne measurements of other trace gases (Hg, etc.). Future Research Goals/Work

Acknowledgements Jaffe Group Members Jaeglé Group Members University of Washington - Bothell NASA/University of Maryland Northway Aviation NOAA NSF