Chemistry of Particles and Selected Trace Gases at Whistler, BC A.M. Macdonald, K.G. Anlauf and W.R. Leaitch. Chemistry of Particles and Selected Trace Gases at Whistler, BC. Objectives Establish a baseline of particle and trace gas measurements at a lower free-tropospheric site.
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Chemistry of Particles and Selected Trace Gases at Whistler, BCA.M. Macdonald, K.G. Anlauf and W.R. Leaitch
The site is located at Whistler Peak (elevation 2182 m) and operates year-round.
Lift operator’s hut – Sep 2004 operates year-round.
Environment Canada samplers
Mar 2002 operates year-round.
Instrumentation at Whistler Site March 2002 to October 2004
POPs (PBDEs, PCBs)
T, RH, P
Ozone and CO calibrations
2003 summer average CO 20% higher than 2002 average
~ 10% increase in summer O3, 2002 to 2003 operates year-round.
2003: 22.5 Mha operates year-round.
2002: 11.7 Mha
2004: 5.6 Mha
From: Jaffe et al., GRL 2004
Results: Particle measurements operates year-round.
Status: Flow corrected- Feb 2004
Samples analyzed –June 7, 2004
(1) Grimm OPC (300 nm – 30 um) (> 80% data coverage in 2003/2004)
(2) DMA (10 nm to 400 nm)
April 2002 to February 2004
Median sulphate is 0.09 g m-3 with 95 % of the samples less than 0.56 g m-3. The major cation is NH4+ with 95% of the samples less than 0.25 g m-3. Very little mass is found in Ca2+ and Mg2+ with this 2.5 m cut off.
Source: Earth Observatory
Other tools available:
Trajectories, TOMS Aerosol Index
Data analysis - Art Tham
Web site – Gary Chung, Kathy Hayden
Site visits – Dave Halpin, Maurice Watt, Kathy Hayden,
Sample analyses – CAPMoN
Site operators - Juniper Buller, Anton Horvath