NH3 ppb back-calculated from IMPROVE data 2005-2007; data from file: am4c_0407.csv

mean BAND1 BRCA1 CANY1 CAPI1 GRCA2 GRSA1 IKBA1 MEVE1

Jan 0.3752 0.2351 0.3613 0.2751 0.2343 0.2629 0.3493 0.3015

Feb 0.3589 0.2942 0.3042 0.3529 0.2127 0.3269 0.3469 0.2508

Mar 0.3544 0.2773 0.2756 0.2922 0.302 0.281 0.4042 0.296

Apr 0.4758 0.4677 0.5024 0.5038 0.476 0.4703 0.6119 0.4561

May 0.4906 0.5111 0.4825 0.4926 0.5341 0.4376 0.7136 0.4546

Jun 0.6403 0.539 0.5138 0.5086 0.5842 0.5674 0.7727 0.5759

Jul 0.5155 0.5057 0.4888 0.5131 0.5255 0.4402 0.724 0.4223

Aug 0.5332 0.4886 0.4498 0.4811 0.5555 0.3945 0.6634 0.4109

Sep 0.5363 0.3807 0.4013 0.3938 0.4393 0.3495 0.5781 0.3932

Oct 0.4403 0.3269 0.3448 0.2883 0.4053 0.3437 0.5107 0.3614

Nov 0.3659 0.3537 0.3149 0.31 0.3733 0.2797 0.511 0.3373

Dec 0.3012 0.2771 0.4538 0.3654 0.2314 0.2634 0.3265 0.2754

standard deviation BAND1 BRCA1 CANY1 CAPI1 GRCA2 GRSA1 IKBA1 MEVE1

Jan 0.4014 0.2052 0.2578 0.2125 0.1433 0.1815 0.2502 0.1798

Feb 0.2567 0.2443 0.1732 0.2941 0.1244 0.1664 0.2161 0.128

Mar 0.1857 0.1365 0.137 0.148 0.1625 0.1324 0.2195 0.1216

Apr 0.1973 0.2101 0.2338 0.234 0.2461 0.1889 0.2851 0.2102

May 0.1882 0.1711 0.1656 0.1783 0.2451 0.1436 0.2578 0.1603

Jun 0.2575 0.2694 0.1908 0.249 0.267 0.1762 0.2595 0.2178

Jul 0.1875 0.198 0.1861 0.2255 0.202 0.1623 0.2731 0.1462

Aug 0.3556 0.1951 0.1574 0.1835 0.2122 0.1546 0.247 0.125

Sep 0.2934 0.1111 0.132 0.1397 0.1674 0.1316 0.2566 0.1397

Oct 0.3167 0.1426 0.1648 0.1203 0.2061 0.2434 0.2859 0.1868

Nov 0.1998 0.2852 0.1385 0.1857 0.2298 0.1766 0.2898 0.1897

Dec 0.18 0.2571 0.2823 0.2689 0.1731 0.1908 0.2405 0.2167

maximum BAND1 BRCA1 CANY1 CAPI1 GRCA2 GRSA1 IKBA1 MEVE1

Jan 2.0724 0.7284 0.9466 0.9612 0.5739 0.8643 1.0927 0.658

Feb 1.1246 1.1885 0.8139 1.2178 0.5043 0.6714 0.8775 0.4865

Mar 0.9308 0.4998 0.6705 0.7013 0.7191 0.5257 1.0691 0.5811

Apr 1.0735 0.9963 1.2268 1.1069 1.1041 0.9107 1.297 1.0625

May 1.0736 0.9071 0.7769 0.7824 1.1409 0.6676 1.3865 0.7451

Jun 1.4971 1.3866 1.1726 1.389 1.408 1.1635 1.5381 1.2243

Jul 1.11 0.9525 1.0593 1.106 1.0471 0.8611 1.3471 0.8039

Aug 1.8202 0.9529 0.8823 0.8314 1.0455 0.7317 1.4674 0.6794

Sep 1.176 0.5945 0.6683 0.7442 0.7864 0.791 1.1651 0.6992

Oct 1.5262 0.6146 0.6081 0.5587 0.8477 1.1634 1.3027 0.7741

Nov 0.984 1.404 0.6695 0.7394 1.0639 0.8903 1.1326 0.8802

Dec 0.8938 0.9996 1.1277 1.0273 0.838 0.9799 1.3937 0.8982

counts BAND1 BRCA1 CANY1 CAPI1 GRCA2 GRSA1 IKBA1 MEVE1

Jan 31 28 31 29 30 31 31 30

Feb 28 28 24 24 28 28 26 27

Mar 31 28 26 31 29 27 31 30

Apr 26 30 30 28 29 30 30 30

May 26 31 31 30 31 30 27 31
Jun 29 27 25 28 28 29 26 24

Jul 29 30 31 21 31 29 29 28

Aug 30 29 31 22 28 25 31 24

Sep 26 29 24 26 28 29 29 23

Oct 31 29 26 25 29 29 31 30

Nov 29 30 30 24 30 29 30 30

Dec 31 29 31 30 30 31 31 31

ratio of max to mean

BAND1 BRCA1 CANY1 CAPI1 GRCA2 GRSA1 IKBA1 MEVE1

Jan 5.5 3.1 2.6 3.5 2.4 3.3 3.1 2.2

Feb 3.1 4.0 2.7 3.5 2.4 2.1 2.5 1.9

Mar 2.6 1.8 2.4 2.4 2.4 1.9 2.6 2.0

Apr 2.3 2.1 2.4 2.2 2.3 1.9 2.1 2.3

May 2.2 1.8 1.6 1.6 2.1 1.5 1.9 1.6

Jun 2.3 2.6 2.3 2.7 2.4 2.1 2.0 2.1

Jul 2.2 1.9 2.2 2.2 2.0 2.0 1.9 1.9

Aug 3.4 2.0 2.0 1.7 1.9 1.9 2.2 1.7

Sep 2.2 1.6 1.7 1.9 1.8 2.3 2.0 1.8

Oct 3.5 1.9 1.8 1.9 2.1 3.4 2.6 2.1

Nov 2.7 4.0 2.1 2.4 2.8 3.2 2.2 2.6

Dec 3.0 3.6 2.5 2.8 3.6 3.7 4.3 3.3

year 2.9 2.5 2.2 2.4 2.4 2.4 2.5 2.1

all 2.4

mean + 2 standard deviations

BAND1 BRCA1 CANY1 CAPI1 GRCA2 GRSA1 IKBA1 MEVE1

Jan 1.178 0.6455 0.8769 0.7001 0.5209 0.6259 0.8497 0.6611

Feb 0.8723 0.7828 0.6506 0.9411 0.4615 0.6597 0.7791 0.5068

Mar 0.7258 0.5503 0.5496 0.5882 0.627 0.5458 0.8432 0.5392

Apr 0.8704 0.8879 0.97 0.9718 0.9682 0.8481 1.1821 0.8765

May 0.867 0.8533 0.8137 0.8492 1.0243 0.7248 1.2292 0.7752

Jun 1.1553 1.0778 0.8954 1.0066 1.1182 0.9198 1.2917 1.0115

Jul 0.8905 0.9017 0.861 0.9641 0.9295 0.7648 1.2702 0.7147

Aug 1.2444 0.8788 0.7646 0.8481 0.9799 0.7037 1.1574 0.6609

Sep 1.1231 0.6029 0.6653 0.6732 0.7741 0.6127 1.0913 0.6726

Oct 1.0737 0.6121 0.6744 0.5289 0.8175 0.8305 1.0825 0.735

Nov 0.7655 0.9241 0.5919 0.6814 0.8329 0.6329 1.0906 0.7167

Dec 0.6612 0.7913 1.0184 0.9032 0.5776 0.645 0.8075 0.7088
Estimation of ammonia background from monthly back-ca

See below:average over all areas of monthly maxes; mev

PEFO1 SAPE1 SYCA1 WEMI1 WHPE1 WHRI1 avg.mo.meanavg.mo.maxENSR val

0.3206 0.1998 0.2699 0.1687 0.1676 0.1302 0.26 0.79 0.2

0.2853 0.2101 0.2851 0.1779 0.2104 0.1815 0.27 0.74 0.2

0.3515 0.2649 0.3593 0.2293 0.2545 0.2188 0.30 0.68 0.5

0.5568 0.4359 0.5336 0.3891 0.3868 0.3613 0.47 1.02 0.5

0.5916 0.4624 0.5699 0.3899 0.4166 0.3899 0.50 0.89 1

0.7248 0.613 0.6493 0.4615 0.516 0.4383 0.58 1.32 1

0.5402 0.5319 0.5633 0.3497 0.4005 0.3533 0.49 0.95 1

0.6402 0.456 0.5891 0.357 0.4021 0.3363 0.48 1.03 1

0.5471 0.4503 0.4753 0.3203 0.379 0.2953 0.42 0.84 1

0.4606 0.3821 0.4566 0.2813 0.3075 0.2072 0.37 0.94 0.5

0.4607 0.3235 0.4411 0.2237 0.262 0.1927 0.34 1.02 0.5

0.2378 0.1442 0.2409 0.1434 0.1505 0.1308 0.25 0.83 0.2

PEFO1 SAPE1 SYCA1 WEMI1 WHPE1 WHRI1

0.1761 0.1145 0.1633 0.1253 0.1081 0.0784

0.1397 0.1219 0.1875 0.0957 0.156 0.1212

0.1512 0.1269 0.2123 0.1152 0.1408 0.1062

0.2292 0.1637 0.2935 0.165 0.1635 0.1822

0.2002 0.1257 0.2365 0.1481 0.1297 0.1561

0.263 0.2585 0.3098 0.1433 0.183 0.1176

0.1842 0.2275 0.1977 0.1487 0.116 0.122

0.2507 0.2555 0.2018 0.1326 0.1852 0.1043

0.3068 0.2139 0.214 0.1513 0.1757 0.0977

0.2131 0.2851 0.2768 0.1803 0.2328 0.1252 average over all areas of monthl

0.2972 0.2649 0.2738 0.1745 0.2119 0.1371

0.1163 0.0988 0.1499 0.1084 0.1539 0.0959

am1

PEFO1 SAPE1 SYCA1 WEMI1 WHPE1 WHRI1 avg.mo.maxavg.mo.meanam1 ENSR val

0.6553 0.4744 0.568 0.6593 0.4211 0.3223 0.79 0.26 0.2

0.5886 0.453 0.7599 0.4296 0.7125 0.5178 0.74 0.27 0.2

0.7922 0.598 0.8686 0.4963 0.6472 0.4891 0.68 0.30 0.5

1.0992 0.8372 1.2822 0.8084 0.7469 0.7473 1.02 0.47 0.5

1.0037 0.6992 1.2052 0.6802 0.6323 0.7286 0.89 0.50 1

1.6627 1.5918 1.8462 0.8467 1.0064 0.7096 1.32 0.58 1

0.9758 1.0679 0.9218 0.8402 0.6031 0.5486 0.95 0.49 1

1.447 1.163 1.1181 0.7384 0.9363 0.5774 1.03 0.48 1

1.2144 0.9737 0.9997 0.6168 0.7981 0.5288 0.84 0.42 1

0.9597 1.4683 1.1083 0.7091 0.9544 0.5351 0.94 0.37 0.5

1.449 1.2176 1.2313 0.8623 1.0289 0.7512 1.02 0.34 0.5

0.5532 0.4777 0.55 0.5301 0.8303 0.4735 0.83 0.25 0.2

PEFO1 SAPE1 SYCA1 WEMI1 WHPE1 WHRI1

30 24 30 31 23 31

27 22 27 28 18 27

25 25 25 31 28 28

27 28 30 30 28 30

31 27 30 31 30 30
28 29 29 28 27 29

26 29 29 30 27 28

28 25 25 31 29 29

24 25 29 28 29 27

30 29 29 31 31 30

27 25 28 30 28 30

19 29 30 30 31 30

PEFO1 SAPE1 SYCA1 WEMI1 WHPE1 WHRI1

2.0 2.4 2.1 3.9 2.5 2.5

2.1 2.2 2.7 2.4 3.4 2.9

2.3 2.3 2.4 2.2 2.5 2.2

2.0 1.9 2.4 2.1 1.9 2.1

1.7 1.5 2.1 1.7 1.5 1.9

2.3 2.6 2.8 1.8 2.0 1.6

1.8 2.0 1.6 2.4 1.5 1.6

2.3 2.6 1.9 2.1 2.3 1.7

2.2 2.2 2.1 1.9 2.1 1.8

2.1 3.8 2.4 2.5 3.1 2.6

3.1 3.8 2.8 3.9 3.9 3.9

2.3 3.3 2.3 3.7 5.5 3.6

2.2 2.5 2.3 2.6 2.7 2.4

PEFO1 SAPE1 SYCA1 WEMI1 WHPE1 WHRI1 avg.mn+2sdavg.mo.maxavg.mo.mean

0.6728 0.4288 0.5965 0.4193 0.3838 0.287 0.63 0.79 0.26

0.5647 0.4539 0.6601 0.3693 0.5224 0.4239 0.62 0.74 0.27

0.6539 0.5187 0.7839 0.4597 0.5361 0.4312 0.60 0.68 0.30

1.0152 0.7633 1.1206 0.7191 0.7138 0.7257 0.90 1.02 0.47

0.992 0.7138 1.0429 0.6861 0.676 0.7021 0.85 0.89 0.50

1.2508 1.13 1.2689 0.7481 0.882 0.6735 1.03 1.32 0.58

0.9086 0.9869 0.9587 0.6471 0.6325 0.5973 0.86 0.95 0.49

1.1416 0.967 0.9927 0.6222 0.7725 0.5449 0.88 1.03 0.48

1.1607 0.8781 0.9033 0.6229 0.7304 0.4907 0.79 0.84 0.42

0.8868 0.9523 1.0102 0.6419 0.7731 0.4576 0.79 0.94 0.37

1.0551 0.8533 0.9887 0.5727 0.6858 0.4669 0.78 1.02 0.34

0.4704 0.3418 0.5407 0.3602 0.4583 0.3226 0.61 0.83 0.25
ia background from monthly back-calculated NH3 from IMPROVE monitors sjb 2009-04-27

ver all areas of monthly maxes; meve values from Sather et al.

max over all areas of monthly means

rounded to 1 decimal

EPA val max ENSR higher higher*1.5

0.8 Jan 0.38 0.2 0.4 0.6

0.7 Feb 0.36 0.2 0.4 0.6

0.7 Mar 0.40 0.5 0.5 0.8

1 Apr 0.61 0.5 0.6 0.9

1 May 0.71 1 1 1.5

1.3 Jun 0.77 1 1 1.5

1 Jul 0.72 1 1 1.5

1 Aug 0.66 1 1 1.5

1 Sep 0.58 1 1 1.5

1 Oct 0.51 0.5 0.5 0.8

1 Nov 0.51 0.5 0.5 0.8

0.9 Dec 0.45 0.2 0.5 0.8

average over all areas of monthly maxes

rounded to 1 decimal

ENSR higher higher*1.5

am3 am4

am3 EPA valm4 EPA meve

0.8 1 Jan 0.2 0.80 1.2

0.7 1 Feb 0.2 0.70 1.1

0.7 1.3 Mar 0.5 0.70 1.1

1 1.3 Apr 0.5 1.00 1.5

1 1.3 May 1 1.00 1.5

1.3 1.3 Jun 1 1.30 1.5

1 1.5 Jul 1 1.00 1.5

1 1.5 Aug 1 1.00 1.5

1 1.5 Sep 1 1.00 1.5

1 1.5 Oct 0.5 0.90 1.4

1 1.3 Nov 0.5 1.00 1.5

0.9 1 Dec 0.2 0.80 1.2
ENSR val EPA val

0.2 Jan

0.2 Feb

0.5 Mar

0.5 Apr

1 May

1 Jun

1 Jul

1 Aug

1 Sep

0.5 Oct

0.5 Nov

0.2 Dec
sjb 2009-04-27

excluding IKBA

rounded to 1 decimal

average max higher higher*1.5

0.25 0.38 0.40 0.6

0.27 0.36 0.40 0.6

0.29 0.36 0.50 0.75

0.46 0.56 0.60 0.9

0.48 0.59 1.00 1.5

0.56 0.72 1.00 1.5

0.47 0.56 1.00 1.5

0.47 0.64 1.00 1.5

0.41 0.55 1.00 1.5

0.35 0.46 0.50 0.75

0.33 0.46 0.50 0.75

0.25 0.45 0.50 0.75
Ammonia scenarios sjb 2009-04-27

Suggest am3 for all Class I areas except use am4 from Mesa Verde

am1 appears too low based on ammonia back-calculated from IMPROVE sulfate and nitrate

am2 appears too high since it leads to CALPUFF nitrate over-predictions at Grand Canryon, and especially Mesa Verde

am3 derived from average over all IMPROVE monitors in domain of maximum monthly back-calculated NH3

am4 derived from graph in Sather et al. paper, rough average of various sites in Four Corners area, including Mesa Verde

(sites northeast of MEVE1 tended to have lower back-calculated values, so assumed that Four Corners area measurement val

am1 am2 am3 am4

am1 ENSR val am2 test am3 EPA val am4 EPA meve

Jan 0.2 1.5 0.8 1

Feb 0.2 1.5 0.7 1

Mar 0.5 1.5 0.7 1.3

Apr 0.5 1.5 1 1.3

May 1 3 1 1.3

Jun 1 3 1.3 1.3

Jul 1 3 1 1.5

Aug 1 3 1 1.5

Sep 1 3 1 1.5

Oct 0.5 1.5 1 1.5

Nov 0.5 1.5 1 1.3

Dec 0.2 1.5 0.9 1

POSTUTIL lines

am1 ENSR ! BCKNH3 = 0.2, 0.2, 0.5, 0.5, 1.0, 1.0, 1.0, 1.0, 1.0, 0.5, 0.5, 0.2 !

am2 test ! BCKNH3 = 1.5, 1.5, 1.5, 1.5, 3.0, 3.0, 3.0, 3.0, 3.0, 1.5, 1.5, 1.5 !

am3 EPA val ! BCKNH3 = 0.8, 0.7, 0.7, 1.0, 1.0, 1.3, 1.0, 1.0, 1.0, 1.0, 1.0, 0.9 !

am4 EPA meve ! BCKNH3 = 1.0, 1.0, 1.3, 1.3, 1.3, 1.3, 1.5, 1.5, 1.5, 1.5, 1.3, 1.0 !

 Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec

0

0.5

1

1.5

2

2.5

3

3.5

J

a

n

F

e

b

M

ar

A

pr

a

m

m

o

nia, p

p

b

Scenarios for POSTUTIL backg

BART modeling of FCPP 
sjb 2009-04-27

n, and especially Mesa Verde

ck-calculated NH3

ers area, including Mesa Verde

Four Corners area measurement values apply only nearby)

M

a

y

J

u

n

J

ul

A

u

g

S

e

p

O

ct

N

o

v

D

e

c

Scenarios for POSTUTIL background ammonia

BART modeling of FCPP and NGS

am1 ENSR val

am2 test

am3 EPA val

am4 EPA meve
0

0.2

0.4

0.6

0.8

1

1.2

1.4

1.6

1.8

2

Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec

a

m

m

o

nia, p

p

b

NH3 Monthly Maxima, back-calculated from IMPROVE 2005-2007

BAND1

BRCA1

CANY1

CAPI1

GRCA2

GRSA1

IKBA1

MEVE1

PEFO1

SAPE1

SYCA1

WEMI1

WHPE1

WHRI1

avg.mo.max

avg.mo.mean

am1 ENSR val

am3 EPA val

am4 EPA meve
0

0.2

0.4

0.6

0.8

1

1.2

1.4

1.6

1.8

2

Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec

a

m

m

o

nia, p

p

b

NH3 Monthly Maxima, back-calculated from IMPROVE 2005-2007

BAND1

BRCA1

CANY1

CAPI1

GRCA2

GRSA1

IKBA1

MEVE1

PEFO1

SAPE1

SYCA1

WEMI1

WHPE1

WHRI1
0

0.2

0.4

0.6

0.8

1

1.2

1.4

1.6

1.8

2

Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec

a

m

m

o

nia, p

p

b

NH3 Monthly Means, back-calculated from IMPROVE 2005-2007

BAND1

BRCA1

CANY1

CAPI1

GRCA2

GRSA1

IKBA1

MEVE1

PEFO1

SAPE1

SYCA1

WEMI1

WHPE1

WHRI1

avg.mo.mean

avg.mo.max
0

0.2

0.4

0.6

0.8

1

1.2

1.4

1.6

1.8

2

Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec

a

m

m

o

nia, p

p

b

NH3 Monthly Means, back-calculated from IMPROVE 2005-2007

BAND1

BRCA1

CANY1

CAPI1

GRCA2

GRSA1

IKBA1

MEVE1

PEFO1

SAPE1

SYCA1

WEMI1

WHPE1

WHRI1

avg.mn+2sd

avg.mo.max

avg.mo.mean

ENSR val