# Appendix H.11

Comparison Between Original and

Revised IMPROVE Equation

# B-1 APPENDIX B

Original and Revised Algorithm Comparisons by Site

# B-2 BRET1

Old and New IMPROVE Algorithm (oia/nia) Extinction by Species

20% Best Days (2002)

0 10 20 30 40 50 60niaoianiaoianiaoianiaoianiaoianiaoianiaoianiaoianiaoianiaoianiaoianiaoianiaoianiaoianiaoianiaoianiaoianiaoianiaoianiaoianiaoianiaoianiaoianiaoianiaoianiaoia



# 1/8 1/14 1/20 2/1 2/7 3/9 3/21 4/11 5/29 6/7 6/19 6/25 7/10 7/28 8/15 8/21 8/24 9/2 10/26 10/29 12/1 12/4 12/22 12/25 12/31 Avg.Extinction (Mm-1)



# Rayleigh Amm SO4 Amm NO3 POM LAC Soil CM Sea Salt

# B-3 BRET1

Old and New IMPROVE Algorithm (oia/nia) Extinction by Species

20% Worst Days (2002)

0 20 40 60 80 100 120 140 160 180 200niaoianiaoianiaoianiaoianiaoianiaoianiaoianiaoianiaoianiaoianiaoianiaoianiaoianiaoianiaoianiaoianiaoianiaoianiaoianiaoianiaoianiaoianiaoianiaoianiaoia



# 2/13 2/16 3/15 5/5 5/23 6/28 7/13 7/16 7/19 7/25 8/3 8/27 9/5 9/8 9/11 9/14 9/17 9/20 9/29 10/8 10/11 10/14 11/1 11/7 Avg.Extinction (Mm-1)



# Rayleigh Amm SO4 Amm NO3 POM LAC Soil CM Sea Salt

# B-4 BRIG1

Old and New IMPROVE Algorithm (oia/nia) Extinction by Species

20% Best Days (2002)

0 10 20 30 40 50 60niaoianiaoianiaoianiaoianiaoianiaoianiaoianiaoianiaoianiaoianiaoianiaoianiaoianiaoianiaoianiaoianiaoianiaoianiaoianiaoianiaoianiaoianiaoia



# 2/1 3/9 3/18 4/23 4/29 5/5 6/7 7/13 7/25 8/9 9/8 9/20 9/26 10/8 10/11 10/14 10/29 11/13 11/28 12/1 12/22 12/25 Avg.Extinction (Mm-1)



# Rayleigh Amm SO4 Amm NO3 POM LAC Soil CM Sea Salt

# B-5 BRIG1

Old and New IMPROVE Algorithm (oia/nia) Extinction by Species

20% Worst Days (2002)

0 100 200 300 400 500 600 700 800niaoianiaoianiaoianiaoianiaoianiaoianiaoianiaoianiaoianiaoianiaoianiaoianiaoianiaoianiaoianiaoianiaoianiaoianiaoianiaoianiaoianiaoianiaoianiaoia



# 1/2 1/20 3/15 4/17 5/2 5/17 5/29 6/1 6/19 6/25 6/28 7/4 7/7 7/10 7/16 7/28 8/12 8/18 10/2 10/5 11/25 12/7 12/28 Avg.Extinction (Mm-1)



# Rayleigh Amm SO4 Amm NO3 POM LAC Soil CM Sea Salt

# B-6 CACR1

Old and New IMPROVE Algorithm (oia/nia) Extinction by Species

20% Best Days (2002)

0 5 10 15 20 25 30 35 40 45niaoianiaoianiaoianiaoianiaoianiaoianiaoianiaoianiaoianiaoianiaoianiaoianiaoianiaoianiaoianiaoianiaoianiaoianiaoianiaoianiaoianiaoianiaoia



# 1/11 1/14 1/26 3/30 4/8 4/26 7/16 9/23 10/5 10/11 10/14 10/20 10/26 10/29 11/7 11/19 11/25 12/1 12/4 12/19 12/22 12/25 Avg.Extinction (Mm-1)



# Rayleigh Amm SO4 Amm NO3 POM LAC Soil CM Sea Salt

# B-7 CACR1

Old and New IMPROVE Algorithm (oia/nia) Extinction by Species

20% Worst Days (2002)

0 50 100 150 200 250 300 350niaoianiaoianiaoianiaoianiaoianiaoianiaoianiaoianiaoianiaoianiaoianiaoianiaoianiaoianiaoianiaoianiaoianiaoianiaoianiaoianiaoianiaoianiaoianiaoianiaoia



# 3/21 5/8 5/23 6/4 6/19 6/22 7/7 7/10 7/19 7/22 7/31 8/3 8/6 8/9 8/27 8/30 9/5 9/8 9/11 9/14 9/17 10/23 11/16 12/7 Avg.Extinction (Mm-1)



# Rayleigh Amm SO4 Amm NO3 POM LAC Soil CM Sea Salt

# B-8 CHAS1

Old and New IMPROVE Algorithm (oia/nia) Extinction by Species

20% Best Days (2002)

0 10 20 30 40 50 60niaoianiaoianiaoianiaoianiaoianiaoianiaoianiaoianiaoianiaoianiaoianiaoianiaoianiaoianiaoianiaoianiaoianiaoianiaoianiaoianiaoianiaoianiaoianiaoia



# 2/7 3/9 3/12 4/14 5/26 6/10 6/13 6/19 6/22 6/25 7/1 7/10 7/22 8/12 8/15 8/27 8/30 9/5 9/23 11/16 12/10 12/13 12/25 Avg.Extinction (Mm-1)



# Rayleigh Amm SO4 Amm NO3 POM LAC Soil CM Sea Salt

# B-9 CHAS1

Old and New IMPROVE Algorithm (oia/nia) Extinction by Species

20% Worst Days (2002)

0 20 40 60 80 100 120 140 160 180niaoianiaoianiaoianiaoianiaoianiaoianiaoianiaoianiaoianiaoianiaoianiaoianiaoianiaoianiaoianiaoianiaoianiaoianiaoianiaoianiaoianiaoianiaoianiaoianiaoia



# 1/5 1/17 1/26 2/10 2/13 2/16 2/25 3/30 4/26 5/8 6/4 7/19 7/25 8/18 8/24 9/17 10/5 10/8 10/17 10/23 11/25 11/28 12/7 12/16 Avg.Extinction (Mm-1)



# Rayleigh Amm SO4 Amm NO3 POM LAC Soil CM Sea Salt

# B-10 COHU1

Old and New IMPROVE Algorithm (oia/nia) Extinction by Species

20% Best Days (2002)

0 10 20 30 40 50 60niaoianiaoianiaoianiaoianiaoianiaoianiaoianiaoianiaoianiaoianiaoianiaoianiaoianiaoianiaoianiaoianiaoianiaoianiaoianiaoianiaoia



# 1/23 1/26 2/1 2/7 2/13 3/3 3/18 3/30 4/23 4/26 4/29 6/22 7/13 9/14 9/26 11/4 11/16 12/7 12/13 12/22 Avg.Extinction (Mm-1)



# Rayleigh Amm SO4 Amm NO3 POM LAC Soil CM Sea Salt

# B-11 COHU1

Old and New IMPROVE Algorithm (oia/nia) Extinction by Species

20% Worst Days (2002)

0 100 200 300 400 500 600niaoianiaoianiaoianiaoianiaoianiaoianiaoianiaoianiaoianiaoianiaoianiaoianiaoianiaoianiaoianiaoianiaoianiaoianiaoianiaoianiaoianiaoia



# 2/25 5/2 6/1 6/4 7/4 7/7 7/10 7/16 7/25 8/3 8/6 8/9 8/12 8/15 8/21 9/5 9/8 9/17 9/20 9/23 10/8 Avg.Extinction (Mm-1)



# Rayleigh Amm SO4 Amm NO3 POM LAC Soil CM Sea Salt

# B-12 DOSO1

Old and New IMPROVE Algorithm (oia/nia) Extinction by Species

20% Best Days (2002)

0 5 10 15 20 25 30 35 40 45 50niaoianiaoianiaoianiaoianiaoianiaoianiaoianiaoianiaoianiaoianiaoianiaoianiaoianiaoianiaoianiaoianiaoianiaoianiaoianiaoianiaoianiaoianiaoia



# 1/5 1/14 1/23 1/26 2/19 3/9 3/30 4/14 4/29 6/7 10/11 10/20 10/26 10/29 11/16 11/22 12/4 12/7 12/13 12/22 12/25 12/31 Avg.Extinction (Mm-1)



# Rayleigh Amm SO4 Amm NO3 POM LAC Soil CM Sea Salt

# B-13 DOSO1

Old and New IMPROVE Algorithm (oia/nia) Extinction by Species

20% Worst Days (2002)

0 50 100 150 200 250 300 350 400 450 500niaoianiaoianiaoianiaoianiaoianiaoianiaoianiaoianiaoianiaoianiaoianiaoianiaoianiaoianiaoianiaoianiaoianiaoianiaoianiaoianiaoianiaoianiaoianiaoia



# 5/2 5/8 5/17 5/26 5/29 6/1 6/4 6/10 6/13 6/19 6/22 6/25 7/1 7/10 7/25 8/12 8/15 9/11 9/14 9/17 9/20 9/29 10/2 Avg.Extinction (Mm-1)



# Rayleigh Amm SO4 Amm NO3 POM LAC Soil CM Sea Salt

# B-14 EVER1

Old and New IMPROVE Algorithm (oia/nia) Extinction by Species

20% Best Days (2002)

0 5 10 15 20 25 30 35 40niaoianiaoianiaoianiaoianiaoianiaoianiaoianiaoianiaoianiaoianiaoianiaoianiaoianiaoianiaoianiaoianiaoianiaoianiaoianiaoianiaoianiaoianiaoianiaoianiaoianiaoia



# 1/23 1/29 2/1 3/12 3/21 4/14 5/14 5/17 5/20 6/13 6/22 6/25 7/10 7/25 7/31 8/30 9/2 9/5 9/8 9/11 10/11 10/14 10/23 10/26 10/29 Avg.Extinction (Mm-1)



# Rayleigh Amm SO4 Amm NO3 POM LAC Soil CM Sea Salt

# B-15 EVER1

Old and New IMPROVE Algorithm (oia/nia) Extinction by Species

20% Worst Days (2002)

0 50 100 150 200 250niaoianiaoianiaoianiaoianiaoianiaoianiaoianiaoianiaoianiaoianiaoianiaoianiaoianiaoianiaoianiaoianiaoianiaoianiaoianiaoianiaoianiaoianiaoianiaoianiaoianiaoianiaoia



# 1/5 2/4 2/13 2/25 3/3 3/15 3/18 4/5 4/8 4/23 4/26 5/5 5/8 6/1 6/7 8/6 8/24 9/14 10/8 10/17 11/1 11/7 11/28 12/7 12/16 12/28Avg.Extinction (Mm-1)



# Rayleigh Amm SO4 Amm NO3 POM LAC Soil CM Sea Salt

# B-16 GRSM1

Old and New IMPROVE Algorithm (oia/nia) Extinction by Species

20% Best Days (2002)

0 10 20 30 40 50 60niaoianiaoianiaoianiaoianiaoianiaoianiaoianiaoianiaoianiaoianiaoianiaoianiaoianiaoianiaoianiaoianiaoianiaoianiaoianiaoianiaoianiaoianiaoianiaoia



# 1/8 1/11 1/14 1/23 2/1 2/7 2/19 2/28 3/3 3/9 3/30 4/26 7/13 9/14 9/26 10/26 10/29 11/4 11/16 11/22 12/7 12/13 12/22 Avg.Extinction (Mm-1)



# Rayleigh Amm SO4 Amm NO3 POM LAC Soil CM Sea Salt

# B-17 GRSM1

Old and New IMPROVE Algorithm (oia/nia) Extinction by Species

20% Worst Days (2002)

0 50 100 150 200 250 300 350 400niaoianiaoianiaoianiaoianiaoianiaoianiaoianiaoianiaoianiaoianiaoianiaoianiaoianiaoianiaoianiaoianiaoianiaoianiaoianiaoianiaoianiaoianiaoianiaoianiaoianiaoia



# 2/25 5/2 5/8 5/17 6/1 6/13 6/19 6/22 7/1 7/7 7/10 7/16 7/22 7/31 8/3 8/6 8/9 8/12 8/15 8/21 9/5 9/8 9/11 9/17 9/23 Avg.Extinction (Mm-1)



# Rayleigh Amm SO4 Amm NO3 POM LAC Soil CM Sea Salt

# B-18 HEGL1

Old and New IMPROVE Algorithm (oia/nia) Extinction by Species

20% Best Days (2002)

0 5 10 15 20 25 30 35 40 45 50niaoianiaoianiaoianiaoianiaoianiaoianiaoianiaoianiaoianiaoianiaoianiaoianiaoianiaoianiaoianiaoianiaoianiaoianiaoianiaoianiaoianiaoianiaoianiaoianiaoianiaoia



# 1/14 1/26 2/13 3/9 3/12 3/30 4/23 4/26 4/29 5/14 5/17 5/20 8/15 9/23 10/5 10/8 10/14 10/17 10/29 11/4 11/7 11/13 12/1 12/19 12/31 Avg.Extinction (Mm-1)



# Rayleigh Amm SO4 Amm NO3 POM LAC Soil CM Sea Salt

# B-19 HEGL1

Old and New IMPROVE Algorithm (oia/nia) Extinction by Species

20% Worst Days (2002)

0 50 100 150 200 250 300 350 400niaoianiaoianiaoianiaoianiaoianiaoianiaoianiaoianiaoianiaoianiaoianiaoianiaoianiaoianiaoianiaoianiaoianiaoianiaoianiaoianiaoianiaoianiaoianiaoianiaoianiaoianiaoia



# 1/5 5/29 6/1 6/19 6/22 6/28 7/7 7/10 7/25 8/3 8/6 8/9 8/12 8/27 8/30 9/2 9/5 9/8 9/14 9/17 9/26 10/23 11/16 11/28 12/7 12/13Avg.Extinction (Mm-1)



# Rayleigh Amm SO4 Amm NO3 POM LAC Soil CM Sea Salt

# B-20 JARI1

Old and New IMPROVE Algorithm (oia/nia) Extinction by Species

20% Best Days (2002)

0 10 20 30 40 50 60 70niaoianiaoianiaoianiaoianiaoianiaoianiaoianiaoianiaoianiaoianiaoianiaoianiaoianiaoianiaoianiaoianiaoianiaoianiaoianiaoianiaoianiaoianiaoianiaoia



# 1/8 1/11 1/23 1/26 2/4 2/13 2/28 3/9 3/18 4/11 4/14 4/23 4/26 5/14 6/7 9/2 10/26 10/29 11/22 11/28 12/1 12/22 12/25 Avg.Extinction (Mm-1)



# Rayleigh Amm SO4 Amm NO3 POM LAC Soil CM Sea Salt

# B-21 JARI1

Old and New IMPROVE Algorithm (oia/nia) Extinction by Species

20% Worst Days (2002)

0 50 100 150 200 250 300 350niaoianiaoianiaoianiaoianiaoianiaoianiaoianiaoianiaoianiaoianiaoianiaoianiaoianiaoianiaoianiaoianiaoianiaoianiaoianiaoianiaoianiaoianiaoianiaoianiaoia



# 5/17 5/26 6/1 6/4 6/10 7/1 7/4 7/10 7/16 7/19 7/22 7/31 8/3 8/6 8/12 8/21 8/24 8/27 9/11 9/14 9/20 9/23 9/29 10/2 Avg.Extinction (Mm-1)



# Rayleigh Amm SO4 Amm NO3 POM LAC Soil CM Sea Salt

# B-22 LIGO1

Old and New IMPROVE Algorithm (oia/nia) Extinction by Species

20% Best Days (2002)

0 5 10 15 20 25 30 35 40 45 50niaoianiaoianiaoianiaoianiaoianiaoianiaoianiaoianiaoianiaoianiaoianiaoianiaoianiaoianiaoianiaoianiaoianiaoianiaoianiaoianiaoianiaoia



# 1/5 1/8 1/11 1/23 1/26 2/7 3/3 3/18 3/30 4/14 4/26 4/29 10/29 11/4 11/16 11/22 12/7 12/13 12/22 12/25 12/28 Avg.Extinction (Mm-1)



# Rayleigh Amm SO4 Amm NO3 POM LAC Soil CM Sea Salt

# B-23 LIGO1

Old and New IMPROVE Algorithm (oia/nia) Extinction by Species

20% Worst Days (2002)

0 50 100 150 200 250 300 350 400niaoianiaoianiaoianiaoianiaoianiaoianiaoianiaoianiaoianiaoianiaoianiaoianiaoianiaoianiaoianiaoianiaoianiaoianiaoianiaoianiaoianiaoianiaoia



# 5/2 5/8 5/17 5/29 6/1 6/19 7/10 7/22 7/25 7/28 7/31 8/3 8/6 8/9 8/12 8/21 8/24 8/27 9/5 9/8 9/11 9/17 Avg.Extinction (Mm-1)



# Rayleigh Amm SO4 Amm NO3 POM LAC Soil CM Sea Salt

# B-24 MACA1

Old and New IMPROVE Algorithm (oia/nia) Extinction by Species

20% Best Days (2002)

0 10 20 30 40 50 60 70niaoianiaoianiaoianiaoianiaoianiaoianiaoianiaoianiaoianiaoianiaoianiaoianiaoianiaoianiaoianiaoianiaoianiaoianiaoianiaoianiaoianiaoianiaoianiaoianiaoia



# 1/14 1/23 2/1 2/4 2/13 3/3 3/9 3/24 3/30 4/23 4/26 8/15 9/23 9/26 10/5 10/8 10/14 10/29 11/4 11/19 12/4 12/13 12/22 12/31 Avg.Extinction (Mm-1)



# Rayleigh Amm SO4 Amm NO3 POM LAC Soil CM Sea Salt

# B-25 MACA1

Old and New IMPROVE Algorithm (oia/nia) Extinction by Species

20% Worst Days (2002)

0 50 100 150 200 250 300 350 400 450niaoianiaoianiaoianiaoianiaoianiaoianiaoianiaoianiaoianiaoianiaoianiaoianiaoianiaoianiaoianiaoianiaoianiaoianiaoianiaoianiaoianiaoianiaoianiaoianiaoianiaoia



# 3/27 5/29 6/1 6/4 6/19 6/22 7/1 7/4 7/10 7/16 7/22 7/25 7/31 8/3 8/6 8/12 8/21 8/24 8/27 9/2 9/8 9/11 9/17 9/20 12/7 Avg.Extinction (Mm-1)



# Rayleigh Amm SO4 Amm NO3 POM LAC Soil CM Sea Salt

# B-26 MING1

Old and New IMPROVE Algorithm (oia/nia) Extinction by Species

20% Best Days (2002)

0 10 20 30 40 50 60niaoianiaoianiaoianiaoianiaoianiaoianiaoianiaoianiaoianiaoianiaoianiaoianiaoianiaoianiaoianiaoianiaoianiaoianiaoianiaoianiaoianiaoianiaoia



# 1/14 2/1 2/13 3/3 4/26 5/14 5/17 5/20 6/13 6/16 6/25 7/19 8/15 9/20 9/23 10/5 10/8 10/17 10/29 11/4 12/19 12/22 Avg.Extinction (Mm-1)



# Rayleigh Amm SO4 Amm NO3 POM LAC Soil CM Sea Salt

# B-27 MING1

Old and New IMPROVE Algorithm (oia/nia) Extinction by Species

20% Worst Days (2002)

-50

0 50 100 150 200 250 300 350niaoianiaoianiaoianiaoianiaoianiaoianiaoianiaoianiaoianiaoianiaoianiaoianiaoianiaoianiaoianiaoianiaoianiaoianiaoianiaoianiaoianiaoianiaoia



# 1/20 3/18 4/5 6/7 7/4 7/7 7/10 7/13 7/16 7/25 8/3 8/6 8/9 8/27 8/30 9/2 9/8 9/17 9/29 10/23 11/28 12/7 Avg.Extinction (Mm-1)



# Rayleigh Amm SO4 Amm NO3 POM LAC Soil CM Sea Salt

# B-28 OKEF1

Old and New IMPROVE Algorithm (oia/nia) Extinction by Species

20% Best Days (2002)

0 10 20 30 40 50 60niaoianiaoianiaoianiaoianiaoianiaoianiaoianiaoianiaoianiaoianiaoianiaoianiaoianiaoianiaoianiaoianiaoianiaoianiaoianiaoianiaoianiaoianiaoianiaoia



# 1/11 1/14 1/20 2/7 2/28 3/3 4/14 6/19 6/22 6/25 6/28 7/10 8/27 8/30 9/14 9/23 10/2 10/11 12/1 12/10 12/13 12/22 12/25 Avg.Extinction (Mm-1)



# Rayleigh Amm SO4 Amm NO3 POM LAC Soil CM Sea Salt

# B-29 OKEF1

Old and New IMPROVE Algorithm (oia/nia) Extinction by Species

20% Worst Days (2002)

0 50 100 150 200 250 300 350 400niaoianiaoianiaoianiaoianiaoianiaoianiaoianiaoianiaoianiaoianiaoianiaoianiaoianiaoianiaoianiaoianiaoianiaoianiaoianiaoianiaoianiaoianiaoianiaoia



# 1/17 1/23 2/13 2/25 3/30 4/5 5/2 5/8 6/4 7/7 7/16 7/19 8/6 8/24 9/11 9/17 9/20 10/8 10/23 11/4 12/4 12/7 12/16 Avg.Extinction (Mm-1)



# Rayleigh Amm SO4 Amm NO3 POM LAC Soil CM Sea Salt

# B-30 ROMA1

Old and New IMPROVE Algorithm (oia/nia) Extinction by Species

20% Best Days (2002)

0 10 20 30 40 50 60niaoianiaoianiaoianiaoianiaoianiaoianiaoianiaoianiaoianiaoianiaoianiaoianiaoianiaoianiaoianiaoianiaoianiaoianiaoianiaoianiaoianiaoianiaoianiaoianiaoianiaoia



# 1/14 1/23 2/7 2/10 3/3 3/6 3/9 4/2 4/14 4/17 5/5 6/10 6/19 6/22 6/25 7/10 8/15 8/30 9/2 9/5 9/20 9/23 9/26 10/11 12/19 Avg.Extinction (Mm-1)



# Rayleigh Amm SO4 Amm NO3 POM LAC Soil CM Sea Salt

# B-31 ROMA1

Old and New IMPROVE Algorithm (oia/nia) Extinction by Species

20% Worst Days (2002)

0 50 100 150 200 250 300niaoianiaoianiaoianiaoianiaoianiaoianiaoianiaoianiaoianiaoianiaoianiaoianiaoianiaoianiaoianiaoianiaoianiaoianiaoianiaoianiaoianiaoianiaoianiaoianiaoianiaoia



# 1/17 1/29 2/13 2/16 2/22 2/25 4/20 5/2 6/4 6/7 7/1 7/4 7/7 7/16 7/19 7/25 7/31 8/24 9/11 9/14 9/17 10/20 10/23 10/26 12/7 Avg.Extinction (Mm-1)



# Rayleigh Amm SO4 Amm NO3 POM LAC Soil CM Sea Salt

# B-32 SAMA1

Old and New IMPROVE Algorithm (oia/nia) Extinction by Species

20% Best Days (2002)

0 10 20 30 40 50 60niaoianiaoianiaoianiaoianiaoianiaoianiaoianiaoianiaoianiaoianiaoianiaoianiaoianiaoianiaoianiaoianiaoianiaoianiaoianiaoianiaoianiaoianiaoianiaoia



# 1/11 1/14 1/20 2/1 2/7 3/9 3/21 6/7 6/10 6/22 6/25 6/28 7/13 7/25 7/28 8/6 8/12 8/27 9/14 9/23 10/29 12/10 12/22 Avg.Extinction (Mm-1)



# Rayleigh Amm SO4 Amm NO3 POM LAC Soil CM Sea Salt

# B-33 SAMA1

Old and New IMPROVE Algorithm (oia/nia) Extinction by Species

20% Worst Days (2002)

0 50 100 150 200 250niaoianiaoianiaoianiaoianiaoianiaoianiaoianiaoianiaoianiaoianiaoianiaoianiaoianiaoianiaoianiaoianiaoianiaoianiaoianiaoianiaoianiaoianiaoianiaoianiaoia



# 2/4 2/13 2/16 2/25 3/30 4/5 4/8 4/17 4/26 5/2 5/5 5/8 5/11 6/4 7/4 7/7 7/16 7/19 9/17 10/17 10/20 10/23 12/7 12/19 Avg.Extinction (Mm-1)



# Rayleigh Amm SO4 Amm NO3 POM LAC Soil CM Sea Salt

# B-34 SHEN1

Old and New IMPROVE Algorithm (oia/nia) Extinction by Species

20% Best Days (2002)

0 5 10 15 20 25 30 35 40 45 50niaoianiaoianiaoianiaoianiaoianiaoianiaoianiaoianiaoianiaoianiaoianiaoianiaoianiaoianiaoianiaoianiaoianiaoianiaoianiaoianiaoianiaoianiaoianiaoia



# 1/5 1/14 1/23 1/26 2/7 2/19 3/3 3/9 3/18 6/7 7/25 8/9 9/2 9/26 10/11 11/16 12/1 12/4 12/7 12/10 12/13 12/22 12/25 Avg.Extinction (Mm-1)



# Rayleigh Amm SO4 Amm NO3 POM LAC Soil CM Sea Salt

# B-35 SHEN1

Old and New IMPROVE Algorithm (oia/nia) Extinction by Species

20% Worst Days (2002)

0 50 100 150 200 250 300 350 400niaoianiaoianiaoianiaoianiaoianiaoianiaoianiaoianiaoianiaoianiaoianiaoianiaoianiaoianiaoianiaoianiaoianiaoianiaoianiaoianiaoianiaoianiaoianiaoianiaoia



# 2/28 5/26 5/29 6/4 6/10 6/13 6/19 6/25 7/1 7/4 7/16 7/19 7/22 7/31 8/3 8/12 8/21 8/24 8/27 9/11 9/14 9/17 9/29 10/2 Avg.Extinction (Mm-1)



# Rayleigh Amm SO4 Amm NO3 POM LAC Soil CM Sea Salt

# B-36 SHRO1

Old and New IMPROVE Algorithm (oia/nia) Extinction by Species

20% Best Days (2002)

0 5 10 15 20 25 30 35niaoianiaoianiaoianiaoianiaoianiaoianiaoianiaoianiaoianiaoianiaoianiaoianiaoianiaoianiaoianiaoianiaoianiaoianiaoianiaoianiaoianiaoianiaoianiaoianiaoianiaoianiaoia



# 1/5 1/8 1/11 1/26 2/7 2/19 3/9 3/12 3/27 3/30 4/14 9/14 9/26 10/26 10/29 11/4 11/16 11/22 12/7 12/10 12/13 12/19 12/22 12/25 12/28 12/31 Avg.Extinction (Mm-1)



# Rayleigh Amm SO4 Amm NO3 POM LAC Soil CM Sea Salt

# B-37 SHRO1

Old and New IMPROVE Algorithm (oia/nia) Extinction by Species

20% Worst Days (2002)

0 100 200 300 400 500 600niaoianiaoianiaoianiaoianiaoianiaoianiaoianiaoianiaoianiaoianiaoianiaoianiaoianiaoianiaoianiaoianiaoianiaoianiaoianiaoianiaoianiaoianiaoianiaoianiaoianiaoia



# 5/8 5/17 6/1 6/4 6/10 6/13 6/19 7/1 7/4 7/7 7/10 7/16 7/22 7/25 7/31 8/3 8/6 8/9 8/12 8/21 9/5 9/8 9/11 9/17 9/23 Avg.Extinction (Mm-1)



# Rayleigh Amm SO4 Amm NO3 POM LAC Soil CM Sea Salt

# B-38 SIPS1

Old and New IMPROVE Algorithm (oia/nia) Extinction by Species

20% Best Days (2002)

0 10 20 30 40 50 60 70niaoianiaoianiaoianiaoianiaoianiaoianiaoianiaoianiaoianiaoianiaoianiaoianiaoianiaoianiaoianiaoianiaoianiaoianiaoianiaoianiaoianiaoianiaoia



# 1/11 1/14 1/26 2/1 2/28 3/18 3/30 4/23 4/26 6/16 6/25 6/28 7/31 8/18 9/14 10/29 11/4 12/1 12/13 12/22 12/25 12/28 Avg.Extinction (Mm-1)



# Rayleigh Amm SO4 Amm NO3 POM LAC Soil CM Sea Salt

# B-39 SIPS1

Old and New IMPROVE Algorithm (oia/nia) Extinction by Species

20% Worst Days (2002)

0 50 100 150 200 250 300 350niaoianiaoianiaoianiaoianiaoianiaoianiaoianiaoianiaoianiaoianiaoianiaoianiaoianiaoianiaoianiaoianiaoianiaoianiaoianiaoianiaoianiaoianiaoianiaoia



# 3/21 5/2 5/11 5/23 6/1 6/4 6/10 7/4 7/7 7/10 8/3 8/6 8/9 8/12 9/8 9/11 9/17 9/20 10/11 10/23 11/28 12/4 12/7 Avg.Extinction (Mm-1)



# Rayleigh Amm SO4 Amm NO3 POM LAC Soil CM Sea Salt

# B-40 SWAN1

Old and New IMPROVE Algorithm (oia/nia) Extinction by Species

20% Best Days (2002)

0 5 10 15 20 25 30 35 40 45niaoianiaoianiaoianiaoianiaoianiaoianiaoianiaoianiaoianiaoianiaoianiaoianiaoianiaoianiaoianiaoianiaoianiaoianiaoianiaoianiaoianiaoianiaoianiaoianiaoianiaoia



# 1/14 1/26 2/1 3/3 3/9 4/14 5/5 6/22 6/25 7/13 8/9 8/15 8/30 9/8 9/20 9/26 10/11 10/17 11/10 11/16 11/28 12/1 12/10 12/19 12/25 Avg.Extinction (Mm-1)



# Rayleigh Amm SO4 Amm NO3 POM LAC Soil CM Sea Salt

# B-41 SWAN1

Old and New IMPROVE Algorithm (oia/nia) Extinction by Species

20% Worst Days (2002)

0 50 100 150 200 250 300niaoianiaoianiaoianiaoianiaoianiaoianiaoianiaoianiaoianiaoianiaoianiaoianiaoianiaoianiaoianiaoianiaoianiaoianiaoianiaoianiaoianiaoianiaoianiaoianiaoia



# 1/5 2/22 2/25 4/20 4/29 5/2 5/8 5/26 6/1 7/4 7/7 7/16 7/19 7/28 7/31 8/21 8/24 9/11 9/17 10/5 10/20 11/22 11/25 12/7 Avg.Extinction (Mm-1)



# Rayleigh Amm SO4 Amm NO3 POM LAC Soil CM Sea Salt

# B-42 UPBU1

Old and New IMPROVE Algorithm (oia/nia) Extinction by Species

20% Best Days (2002)

0 5 10 15 20 25 30 35 40 45 50niaoianiaoianiaoianiaoianiaoianiaoianiaoianiaoianiaoianiaoianiaoianiaoianiaoianiaoianiaoianiaoianiaoianiaoianiaoianiaoianiaoianiaoianiaoianiaoia



# 1/14 1/26 2/16 3/9 3/30 4/8 4/26 4/29 6/13 6/16 6/25 8/15 9/23 10/5 10/8 10/14 10/17 10/29 11/7 11/19 12/1 12/19 12/31 Avg.Extinction (Mm-1)



# Rayleigh Amm SO4 Amm NO3 POM LAC Soil CM Sea Salt

# B-43 UPBU1

Old and New IMPROVE Algorithm (oia/nia) Extinction by Species

20% Worst Days (2002)

0 50 100 150 200 250 300 350niaoianiaoianiaoianiaoianiaoianiaoianiaoianiaoianiaoianiaoianiaoianiaoianiaoianiaoianiaoianiaoianiaoianiaoianiaoianiaoianiaoianiaoianiaoianiaoianiaoianiaoia



# 5/8 5/23 6/7 6/19 6/22 6/28 7/1 7/10 7/16 7/22 7/25 8/3 8/6 8/9 8/12 8/27 8/30 9/5 9/8 9/11 9/14 9/26 10/23 11/16 11/28 Avg.Extinction (Mm-1)



# Rayleigh Amm SO4 Amm NO3 POM LAC Soil CM Sea Salt