# A-1 APPENDIX A

Nephelometer ComparisonsA-2All Daysy = 0.97x + 5.02R2= 0.860501001502002503000 50 100 150 200 250 30024-hr Nephelometer bsp(Mm-1)

24-hr Aerosol b sp (Mm

-1 )Q4y = 1.26x - 2.86R2= 0.700501001502002503000 50 100 150 200 250 300Q1y = 0.67x + 14.69R2= 0.790501001502002503000 50 100 150 200 250 300Q2y = 0.94x + 5.98R2= 0.910501001502002503000 50 100 150 200 250 300Q3y = 0.95x + 6.02R2= 0.800501001502002503000 50 100 150 200 250 300-100-75-50-250255075100 J-04 F-04 M-04 A-04 M-04 J-04 J-04 A-04 S-04 O-04 N-04 D-04

Difference (Mm

-1 ) (Aer. b sp - Neph. b sp )Aerosol Scattering vs.NephelometerScatteringUsing New IMPROVE Algorithm (nia) and Daily f(RH)COHU1, 2004A-3All Daysy = 0.77x + 11.09R2= 0.910501001502002503000 50 100 150 200 250 30024-hr Nephelometer bsp(Mm-1)

24-hr Aerosol b sp (Mm

-1 )Q4y = 1.12x + 0.10R2= 0.810501001502002503000 50 100 150 200 250 300Q1y = 0.64x + 14.07R2= 0.860501001502002503000 50 100 150 200 250 300Q2y = 0.75x + 11.89R2= 0.940501001502002503000 50 100 150 200 250 300Q3y = 0.70x + 18.76R2= 0.900501001502002503000 50 100 150 200 250 300-100-75-50-250255075100 J-04 F-04 M-04 A-04 M-04 J-04 J-04 A-04 S-04 O-04 N-04 D-04

Difference (Mm

-1 ) (Aer. b sp - Neph. b sp )Aerosol Scattering vs.NephelometerScatteringUsing Old IMPROVE Algorithm (oia) and Daily f(RH)COHU1, 2004A-4COHU1 Daily ExtinctionNew IMPROVE Algorithm (left bar) Old IMPROVEAlgorithm (right bar) and Neph (grey line)Extinction by Species2004050100150200250300 2/18 2/21 2/24 3/1 3/16 3/19 3/22 3/25 3/28 4/3 4/6 4/9 4/15 4/18 4/21 4/24 4/27 5/3 5/6 5/9 5/15 5/21 5/24 5/27 6/5 6/11 8/4 8/7 8/13 8/16 8/19 8/22 8/31 9/3 9/6 9/12 9/21 9/24 9/27 9/30 10/3 10/6 10/9 10/15 10/18 11/5 11/8 11/14 11/17 11/26 11/29 12/2 12/5 12/8 12/14 12/26 12/29

Extinction (Mm

-1 )Amm SO4Amm NO3POMSoilCMSea SaltnephA-5All Daysy = 0.96x + 5.19R2= 0.790501001502002503000 50 100 150 200 250 30024-hr Nephelometer bsp(Mm-1)

24-hr Aerosol b sp (Mm

-1 )Q4y = 0.76x + 8.75R2= 0.800501001502002503000 50 100 150 200 250 300Q1y = 0.92x + 8.10R2= 0.750501001502002503000 50 100 150 200 250 300Q2y = 0.81x + 13.10R2= 0.640501001502002503000 50 100 150 200 250 300Q3y = 1.08x - 1.18R2= 0.850501001502002503000 50 100 150 200 250 300-100-75-50-250255075100 1993 1994 1995 1996 1997

Difference (Mm

-1 ) (Aer. b sp - Neph. b sp )Aerosol Scattering vs.NephelometerScatteringUsing New IMPROVE Algorithm (nia) and Daily f(RH)OKEF1, 1993 - 1997A-6All Daysy = 0.71x + 14.59R2= 0.810501001502002503000 50 100 150 200 250 30024-hr Nephelometer bsp(Mm-1)

24-hr Aerosol b sp (Mm

-1 )Q4y = 0.73x + 11.02R2= 0.810501001502002503000 50 100 150 200 250 300Q1y = 0.83x + 10.29R2= 0.790501001502002503000 50 100 150 200 250 300Q2y = 0.64x + 18.22R2= 0.710501001502002503000 50 100 150 200 250 300Q3y = 0.70x + 17.84R2= 0.840501001502002503000 50 100 150 200 250 300-100-75-50-250255075100 1993 1994 1995 1996 1997

Difference (Mm

-1 ) (Aer. b sp - Neph. b sp )Aerosol Scattering vs.NephelometerScatteringUsing Old IMPROVE Algorithm (oia) and Daily f(RH)OKEF1, 1993 - 1997A-7OKEF1 Daily ExtinctionNew IMPROVE Algorithm (left bar) Old IMPROVEAlgorithm (right bar) and Neph (grey line)Extinction by Species1996020406080100120140160180 1/6 1/10 1/13 1/20 1/24 1/27 1/31 2/7 2/14 2/17 2/24 3/6 3/9 3/13 3/16 3/20 3/23 4/3 4/10 4/13 4/17 4/20 4/24 4/27 5/4 5/8 5/15 5/18 5/22 5/25 5/29 6/1 6/5 6/12 6/19 6/22 6/26 7/3 7/10 7/20 7/24 7/27 8/24 9/7 9/14 10/5 10/12 10/19 10/30 11/9 11/13 11/16 11/27 11/30 12/4 12/11 12/21 12/25

Extinction (Mm

-1 )Amm SO4Amm NO3POMSoilCMSea SaltnephA-8All Daysy = 0.93x + 5.76R2= 0.780501001502002503000 50 100 150 200 250 30024-hr Nephelometer bsp(Mm-1)

24-hr Aerosol b sp (Mm

-1 )Q4y = 0.95x + 1.61R2= 0.770501001502002503000 50 100 150 200 250 300Q1y = 0.77x + 9.13R2= 0.800501001502002503000 50 100 150 200 250 300Q2y = 0.88x + 11.32R2= 0.800501001502002503000 50 100 150 200 250 300Q3y = 0.98x + 15.13R2= 0.810501001502002503000 50 100 150 200 250 300-100-75-50-250255075100 1993 1994 1995 1996 1997 1998 1999 2000 2001 2002 2003 2004

Difference (Mm

-1 ) (Aer. b sp - Neph. b sp )Aerosol Scattering vs.NephelometerScatteringUsing New IMPROVE Algorithm (nia) and Daily f(RH)MACA1, 1993 - 2004A-9All Daysy = 0.75x + 12.54R2= 0.820501001502002503000 50 100 150 200 250 30024-hr Nephelometer bsp(Mm-1)

24-hr Aerosol b sp (Mm

-1 )Q4y = 0.79x + 8.70R2= 0.810501001502002503000 50 100 150 200 250 300Q1y = 0.72x + 10.95R2= 0.830501001502002503000 50 100 150 200 250 300Q2y = 0.70x + 16.70R2= 0.850501001502002503000 50 100 150 200 250 300Q3y = 0.71x + 23.00R2= 0.830501001502002503000 50 100 150 200 250 300-100-75-50-250255075100 1993 1994 1995 1996 1997 1998 1999 2000 2001 2002 2003 2004

Difference (Mm

-1 ) (Aer. b sp - Neph. b sp )Aerosol Scattering vs.NephelometerScatteringUsing Old IMPROVE Algorithm (oia) and Daily f(RH)MACA1, 1993 - 2004A-10MACA1 Daily ExtinctionNew IMPROVE Algorithm (left bar) Old IMPROVEAlgorithm (right bar) and Neph (grey line)Extinction by Species2004020406080100120140160180 1/1 1/4 1/7 1/10 1/16 1/19 1/22 1/28 1/31 2/9 2/12 2/15 2/18 2/21 2/24 2/27 3/4 3/7 3/10 3/13 3/19 3/22 3/25 3/28 3/31 4/3 4/6 4/9 4/15 4/18 4/24 4/27 5/6 5/9 5/12 5/21 5/24 5/27 5/30 6/2 6/5 6/20 6/23 6/26 7/14 7/23 8/7 8/13 8/16 8/19 9/6 9/15 9/18 9/21 9/27 10/3 10/6 10/9 10/15 10/24 10/30 11/5 11/8 11/14 11/17 11/26 11/29 12/5 12/8 12/20 12/23 12/26 12/29

Extinction (Mm

-1 )Amm SO4Amm NO3POMSoilCMSea SaltnephA-11All Daysy = 0.75x + 7.98R2= 0.770501001502002503000 50 100 150 200 250 30024-hr Nephelometer bsp(Mm-1)

24-hr Aerosol b sp (Mm

-1 )Q4y = 0.36x + 13.11R2= 0.470501001502002503000 50 100 150 200 250 300Q1y = 0.30x + 15.41R2= 0.340501001502002503000 50 100 150 200 250 300Q2y = 0.85x + 11.42R2= 0.910501001502002503000 50 100 150 200 250 300Q3y = 0.87x + 9.64R2= 0.770501001502002503000 50 100 150 200 250 300-100-75-50-250255075100 1994 1995 1996 1997 1998 1999

Difference (Mm

-1 ) (Aer. b sp - Neph. b sp )Aerosol Scattering vs.NephelometerScatteringUsing New IMPROVE Algorithm (nia) and Daily f(RH)SHRO1, 1994 - 1999A-12All Daysy = 0.62x + 11.79R2= 0.780501001502002503000 50 100 150 200 250 30024-hr Nephelometer bsp(Mm-1)

24-hr Aerosol b sp (Mm

-1 )Q4y = 0.37x + 13.92R2= 0.510501001502002503000 50 100 150 200 250 300Q1y = 0.32x + 16.25R2= 0.370501001502002503000 50 100 150 200 250 300Q2y = 0.65x + 17.32R2= 0.880501001502002503000 50 100 150 200 250 300Q3y = 0.63x + 23.88R2= 0.790501001502002503000 50 100 150 200 250 300-100-75-50-250255075100 1994 1995 1996 1997 1998 1999

Difference (Mm

-1 ) (Aer. b sp - Neph. b sp )Aerosol Scattering vs.NephelometerScatteringUsing Old IMPROVE Algorithm (oia) and Daily f(RH)SHRO1, 1994 - 1999A-13SHRO1 Daily ExtinctionNew IMPROVE Algorithm (left bar) Old IMPROVEAlgorithm (right bar) and Neph (grey line)Extinction by Species1997020406080100120140160180200 1/15 1/18 2/12 2/19 3/5 3/8 3/12 3/15 3/22 3/29 4/2 4/5 4/16 4/26 5/7 5/10 5/14 5/17 5/21 6/11 6/18 9/13 9/20 10/1 10/4 10/15 10/22 10/29 11/5 11/15 11/19 11/22 11/26 12/6 12/10 12/13 12/17 12/20

Extinction (Mm

-1 )Amm SO4Amm NO3POMSoilCMSea SaltnephA-14All Daysy = 1.30x - 6.57R2= 0.910501001502002503000 50 100 150 200 250 30024-hr Nephelometer bsp(Mm-1)

24-hr Aerosol b sp (Mm

-1 )Q4y = 1.21x - 4.25R2= 0.980501001502002503000 50 100 150 200 250 300Q1y = 0.77x + 16.08R2= 0.300501001502002503000 50 100 150 200 250 300Q2y = 1.26x - 6.37R2= 0.940501001502002503000 50 100 150 200 250 300Q3y = 1.42x - 14.47R2= 0.950501001502002503000 50 100 150 200 250 300-100-75-50-250255075100 J-04 F-04 M-04 A-04 M-04 J-04 J-04 A-04 S-04 O-04 N-04 D-04

Difference (Mm

-1 ) (Aer. b sp - Neph. b sp )Aerosol Scattering vs.NephelometerScatteringUsing New IMPROVE Algorithm (nia) and Daily f(RH)ROMA1, 2004A-15All Daysy = 1.00x + 3.56R2= 0.940501001502002503000 50 100 150 200 250 30024-hr Nephelometer bsp(Mm-1)

24-hr Aerosol b sp (Mm

-1 )Q4y = 1.14x - 1.76R2= 0.980501001502002503000 50 100 150 200 250 300Q1y = 0.79x + 12.27R2= 0.570501001502002503000 50 100 150 200 250 300Q2y = 1.06x + 1.24R2= 0.950501001502002503000 50 100 150 200 250 300Q3y = 1.00x + 1.96R2= 0.970501001502002503000 50 100 150 200 250 300-100-75-50-250255075100 J-04 F-04 M-04 A-04 M-04 J-04 J-04 A-04 S-04 O-04 N-04 D-04

Difference (Mm

-1 ) (Aer. b sp - Neph. b sp )Aerosol Scattering vs.NephelometerScatteringUsing Old IMPROVE Algorithm (oia) and Daily f(RH)ROMA1, 2004A-16ROMA1 Daily ExtinctionNew IMPROVE Algorithm (left bar) Old IMPROVEAlgorithm (right bar) and Neph (grey line)Extinction by Species2004020406080100120140160180 1/16 1/19 1/28 1/31 2/9 2/18 2/21 3/1 3/7 3/10 3/13 3/19 3/22 3/28 3/31 4/3 4/15 4/18 4/21 4/24 5/12 5/15 5/18 5/24 5/27 5/30 6/14 6/17 6/20 6/23 6/26 6/29 7/8 7/14 7/17 7/26 8/1 8/4 8/7 8/10 9/3 9/12 9/18 9/21 9/24 10/6 10/15 11/8 11/14 11/29 12/11 12/14 12/17 12/20

Extinction (Mm

-1 )Amm SO4Amm NO3POMSoilCMSea SaltnephA-17All Daysy = 0.98x + 5.97R2= 0.870501001502002503000 50 100 150 200 250 30024-hr Nephelometer bsp(Mm-1)

24-hr Aerosol b sp (Mm

-1 )Q4y = 1.04x - 0.32R2= 0.940501001502002503000 50 100 150 200 250 300Q1y = 0.69x + 12.95R2= 0.460501001502002503000 50 100 150 200 250 300Q2y = 1.03x + 7.07R2= 0.890501001502002503000 50 100 150 200 250 300Q3y = 0.87x + 19.40R2= 0.760501001502002503000 50 100 150 200 250 300-100-75-50-250255075100 2000 2001 2002 2003

Difference (Mm

-1 ) (Aer. b sp - Neph. b sp )Aerosol Scattering vs.NephelometerScatteringUsing New IMPROVE Algorithm (nia) and Daily f(RH)GRSM1, 2000 - 2004A-18All Daysy = 0.71x + 14.70R2= 0.890501001502002503000 50 100 150 200 250 30024-hr Nephelometer bsp(Mm-1)

24-hr Aerosol b sp (Mm

-1 )Q4y = 0.71x + 12.05R2= 0.920501001502002503000 50 100 150 200 250 300Q1y = 0.63x + 13.92R2= 0.620501001502002503000 50 100 150 200 250 300Q2y = 0.75x + 16.20R2= 0.900501001502002503000 50 100 150 200 250 300Q3y = 0.62x + 26.41R2= 0.820501001502002503000 50 100 150 200 250 300-100-75-50-250255075100 2000 2001 2002 2003

Difference (Mm

-1 ) (Aer. b sp - Neph. b sp )Aerosol Scattering vs.NephelometerScatteringUsing Old IMPROVE Algorithm (oia) and Daily f(RH)GRSM1, 2000 - 2004A-19GRSM1 Daily ExtinctionNew IMPROVE Algorithm (left bar) Old IMPROVEAlgorithm (right bar) and Neph (grey line)Extinction by Species2004050100150200250 1/1 1/4 1/7 1/13 1/16 1/19 1/22 1/28 1/31 2/9 2/21 2/24 3/1 3/4 3/7 3/10 3/13 3/19 3/22 3/25 3/28 4/3 4/6 4/9 4/15 4/18 4/21 4/24 4/27 4/30 5/9 5/12 5/15 5/21 5/24 5/27 5/30 6/2 6/5 6/11 6/14 6/17 6/20 6/29 7/5 7/8 7/11 7/23 7/29 8/1 8/4 8/7 8/10 8/16 8/19 8/25 8/28 9/3 9/6 9/12 9/15 9/18 9/21 9/24 9/27 10/6 10/9 10/15 10/18 10/27 10/30 11/2 11/5 11/8 11/11 11/14 11/17 11/26 11/29 12/2 12/5 12/8 12/17 12/26 12/29

Extinction (Mm

-1 )Amm SO4Amm NO3POMSoilCMSea SaltnephA-20All Daysy = 1.05x + 6.69R2= 0.860501001502002503000 50 100 150 200 250 30024-hr Nephelometer bsp(Mm-1)

24-hr Aerosol b sp (Mm

-1 )Q4y = 0.87x + 13.24R2= 0.780501001502002503000 50 100 150 200 250 300Q1y = 1.16x + 0.71R2= 0.900501001502002503000 50 100 150 200 250 300Q2y = 0.99x + 8.94R2= 0.880501001502002503000 50 100 150 200 250 300Q3y = 1.12x + 8.54R2= 0.820501001502002503000 50 100 150 200 250 300-100-75-50-250255075100 2000 2001 2002 2003

Difference (Mm

-1 ) (Aer. b sp - Neph. b sp )Aerosol Scattering vs.NephelometerScatteringUsing New IMPROVE Algorithm (nia) and Daily f(RH)JARI1, 2000-2003A-21All Daysy = 0.79x + 12.96R2= 0.860501001502002503000 50 100 150 200 250 30024-hr Nephelometer bsp(Mm-1)

24-hr Aerosol b sp (Mm

-1 )Q4y = 0.73x + 15.57R2= 0.830501001502002503000 50 100 150 200 250 300Q1y = 1.02x + 3.63R2= 0.900501001502002503000 50 100 150 200 250 300Q2y = 0.73x + 15.79R2= 0.860501001502002503000 50 100 150 200 250 300Q3y = 0.74x + 20.16R2= 0.830501001502002503000 50 100 150 200 250 300-100-75-50-250255075100 2000 2001 2002 2003

Difference (Mm

-1 ) (Aer. b sp - Neph. b sp )Aerosol Scattering vs.NephelometerScatteringUsing Old IMPROVE Algorithm (oia) and Daily f(RH)JARI1, 2000-2003A-22JARI1 Daily ExtinctionNew IMPROVE Algorithm (left bar) Old IMPROVEAlgorithm (right bar) and Neph (grey line)Extinction by Species2002050100150200250 1/2 1/5 1/8 1/11 1/14 1/17 1/26 1/29 2/1 2/4 2/13 2/16 2/19 2/22 2/25 2/28 3/6 3/9 3/15 3/21 3/24 3/30 4/2 4/5 4/8 4/11 4/14 4/17 4/20 4/23 4/26 4/29 5/5 5/11 5/14 5/17 5/20 5/23 5/26 6/1 6/4 6/7 6/13 6/16 6/22 6/25 7/1 7/4 7/7 7/13 7/16 7/22 7/31 8/3 8/6 8/9 8/12 8/15 8/21 8/24 8/27 8/30 9/2 9/5 9/8 9/11 9/23 10/5 10/8 10/14 10/20 11/1 11/7 11/10 11/13 11/22 11/25 11/28 12/1 12/4 12/7 12/10 12/16 12/19 12/22 12/25 12/28 12/31

Extinction (Mm

-1 )Amm SO4Amm NO3POMSoilCMSea SaltnephA-23All Daysy = 1.03x + 3.53R2= 0.800501001502002503000 50 100 150 200 250 30024-hr Nephelometer bsp(Mm-1)

24-hr Aerosol b sp (Mm

-1 )Q4y = 0.80x + 6.16R2= 0.690501001502002503000 50 100 150 200 250 300Q1y = 0.91x + 6.23R2= 0.500501001502002503000 50 100 150 200 250 300Q2y = 0.95x + 8.05R2= 0.800501001502002503000 50 100 150 200 250 300Q3y = 1.04x + 14.11R2= 0.820501001502002503000 50 100 150 200 250 300-100-75-50-250255075100 1996 1997 1998 1999 2000 2001 2002 2003 2004

Difference (Mm

-1 ) (Aer. b sp - Neph. b sp )Aerosol Scattering vs.NephelometerScatteringUsing New IMPROVE Algorithm (nia) and Daily f(RH)SHEN1, 1996 - 2004A-24All Daysy = 0.79x + 11.12R2= 0.810501001502002503000 50 100 150 200 250 30024-hr Nephelometer bsp(Mm-1)

24-hr Aerosol b sp (Mm

-1 )Q4y = 0.70x + 9.96R2= 0.710501001502002503000 50 100 150 200 250 300Q1y = 0.90x + 6.87R2= 0.700501001502002503000 50 100 150 200 250 300Q2y = 0.73x + 15.04R2= 0.790501001502002503000 50 100 150 200 250 300Q3y = 0.72x + 25.20R2= 0.820501001502002503000 50 100 150 200 250 300-100-75-50-250255075100 1996 1997 1998 1999 2000 2001 2002 2003 2004

Difference (Mm

-1 ) (Aer. b sp - Neph. b sp )Aerosol Scattering vs.NephelometerScatteringUsing Old IMPROVE Algorithm (oia) and Daily f(RH)SHEN1, 1996 - 2004A-25SHEN1 Daily ExtinctionNew IMPROVE Algorithm (left bar) Old IMPROVEAlgorithm (right bar) and Neph (grey line)Extinction by Species2004050100150200250300 1/1 1/4 1/7 1/13 1/16 1/19 1/22 1/25 1/28 1/31 2/15 2/18 2/21 2/27 3/1 3/4 3/7 3/10 3/13 3/19 3/22 3/25 4/6 4/15 4/18 4/30 5/3 5/6 5/9 5/12 5/24 6/2 6/17 6/20 6/26 6/29 7/5 7/8 7/17 8/4 8/7 8/31 10/6 10/9 10/12 10/18 11/5 11/8 11/11 11/14 11/17 11/26 11/29 12/2 12/5 12/8 12/11 12/14 12/17 12/20 12/29

Extinction (Mm

-1 )Amm SO4Amm NO3POMSoilCMSea Saltneph