STN/IMPROVE Monitoring Intercomparison Sites:Oct. 2001 – Dec. 2003

Mt. Rainier NPS

Phoenix

TontoNational Monument

Haines Point, NPS

Wash. DC

Official or designated STN site, host to IMPROVE samplerOfficial IMPROVE site, host to STN sampler

Anderson RAAS 401 STN Samplers

Met One SASS STN Samplers

URG MASS STN Samplers

SeattleBeacon Hill

USDA FS Dolly SodsWilderness

Operated According to Each Network’s Protocols

6 City CSN/IMPROVE Comparison

IMPROVE/CSN Organic Carbon

parm=OC (Imp or STN)

PLOT Beacon Hill (urban) Beacon Hill Deming LineMt. Ranier (rural) Mt. Ranier Deming Line

IMP

RO

VE

0

3

6

9

12

15

STN

0 3 6 9 12 15

parm=OC (Imp or STN)

PLOT Phoenix (urban) Phoenix Deming LineTonto (rural) Tonto Deming Line

IMP

RO

VE

0

5

10

15

20

STN

0 5 10 15 20

parm=OC (Imp or STN)

PLOT Haines Point (urban) Haines Point Deming LineDolly Sods (rural) Dolly Sods Deming Line

IMP

RO

VE

0

5

10

15

20

STN

0 5 10 15 20

URG MASS – 16.7 LPM; IMPROVE ~22 LPM; Other STN 6-7 LPM

IMPROVE OC un-adjusted for blank

IMP = 0.861STN – 1.35; R2 0.93IMP = 0.742STN – 0.437; R2 0.85

IMP = 0.758STN – 0.446; R2 0.94IMP = 0.804STN – 0.283; R2 0.64

IMP = 1.09STN – 0.052; R2 0.97

IMP = 0.915STN – 0.08; R2 0.96

URG

MetOne

Andersen

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