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6 City CSN/IMPROVE Comparison

Operated According to Each Network’s Protocols. STN/IMPROVE Monitoring Intercomparison Sites:Oct. 2001 – Dec. 2003. Seattle. Beacon Hill. Mt. Rainier NPS. URG MASS STN Samplers. Haines Point, NPS. USDA FS Dolly Sods Wilderness. Wash. DC. Anderson RAAS 401 STN Samplers. Tonto

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6 City CSN/IMPROVE Comparison

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  1. Operated According to Each Network’s Protocols STN/IMPROVE Monitoring Intercomparison Sites:Oct. 2001 – Dec. 2003 Seattle Beacon Hill Mt. Rainier NPS URG MASS STN Samplers Haines Point, NPS USDA FS Dolly Sods Wilderness Wash. DC Anderson RAAS 401 STN Samplers Tonto National Monument Phoenix Met One SASS STN Samplers Official or designated STN site, host to IMPROVE sampler Official IMPROVE site, host to STN sampler 6 City CSN/IMPROVE Comparison

  2. IMPROVE/CSN Organic Carbon IMP = 0.861STN – 1.35; R2 0.93 URG MASS – 16.7 LPM; IMPROVE ~22 LPM; Other STN 6-7 LPM IMPROVE OC un-adjusted for blank IMP = 0.742STN – 0.437; R2 0.85 MetOne IMP = 1.09STN – 0.052; R2 0.97 IMP = 0.758STN – 0.446; R2 0.94 IMP = 0.915STN – 0.08; R2 0.96 IMP = 0.804STN – 0.283; R2 0.64 URG Andersen

  3. CSN Blanks • “Old” CSN Blanks – all sites • 3% Trip Blanks • 10% Field Blanks (momentarily exposed) • Decreased to 5% May 2007 • “New” CSN Blanks – all sites • 3% Trip Blanks • 10% Field Blanks • 30% Backup Quartz (QBQ) • Field Blank collected on same day as QBQ

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