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Grand Canyon National Park
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Table 1. Grand Canyon ammonium sulfate trajectory
regression attribution
assessment using a zero intercept. |
|
|
| Source Regions |
Contributions (ug/m3) |
Uncertainty
(ug/m3) |
Fraction (%) |
Uncertainty (%) |
Cumulative (%) |
Significance
(p value) |
| Intercept |
|
|
|
|
|
|
| PAC |
0.1531 |
0.0204 |
18.0 |
2.4 |
18.0 |
0.0000 |
| PACCoast |
0.1529 |
0.0241 |
18.0 |
2.8 |
36.0 |
0.0000 |
| SWAZ |
0.1511 |
0.0284 |
17.8 |
3.3 |
53.7 |
0.0000 |
| MEX |
0.0785 |
0.0164 |
9.2 |
1.9 |
63.0 |
0.0000 |
| CA |
0.0766 |
0.0193 |
9.0 |
2.3 |
72.0 |
0.0001 |
| NW |
0.0524 |
0.0159 |
6.2 |
1.9 |
78.1 |
0.0011 |
| UT |
0.0314 |
0.0194 |
3.7 |
2.3 |
81.8 |
0.1076 |
| GULF |
0.0282 |
0.0064 |
3.3 |
0.8 |
85.1 |
0.0000 |
| NEAZ |
0.0253 |
0.0152 |
3.0 |
1.8 |
88.1 |
0.0973 |
| SEAZ |
0.0250 |
0.0139 |
2.9 |
1.6 |
91.0 |
0.0733 |
| NM |
0.0217 |
0.0099 |
2.6 |
1.2 |
93.6 |
0.0284 |
| SE |
0.0209 |
0.0074 |
2.5 |
0.9 |
96.0 |
0.0053 |
| CO |
0.0058 |
0.0055 |
0.7 |
0.6 |
96.7 |
0.2934 |
| NWAZ |
0.0052 |
0.0177 |
0.6 |
2.1 |
97.3 |
0.7699 |
| CAN |
0.0049 |
0.0085 |
0.6 |
1.0 |
97.9 |
0.5671 |
| NE |
0.0018 |
0.0046 |
0.2 |
0.5 |
98.1 |
0.6936 |
| ATL |
0.0011 |
0.0026 |
0.1 |
0.3 |
98.3 |
0.6671 |
| NV |
-0.0065 |
0.0155 |
-0.8 |
1.8 |
97.5 |
0.6730 |
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Table 2. Grand Canyon ammonium sulfate trajectory regression attribution
assessment including an intercept. |
|
| Source Regions |
Contributions (ug/m3) |
Uncertainty (ug/m3) |
Fraction (%) |
Uncertainty (%) |
Cumulative (%) |
Significance (p value) |
| Intercept |
0.2782 |
0.0785 |
32.7 |
9.2 |
32.7 |
0.0005 |
| PAC |
0.1164 |
0.0226 |
13.7 |
2.7 |
46.4 |
0.0000 |
| PACCoast |
0.1173 |
0.0257 |
13.8 |
3.0 |
60.2 |
0.0000 |
| SWAZ |
0.1057 |
0.0306 |
12.4 |
3.6 |
72.6 |
0.0006 |
| MEX |
0.0646 |
0.0165 |
7.6 |
1.9 |
80.2 |
0.0001 |
| CA |
0.0538 |
0.0200 |
6.3 |
2.3 |
86.5 |
0.0075 |
| NW |
0.0340 |
0.0164 |
4.0 |
1.9 |
90.5 |
0.0398 |
| UT |
0.0181 |
0.0194 |
2.1 |
2.3 |
92.6 |
0.3530 |
| GULF |
0.0267 |
0.0063 |
3.1 |
0.7 |
95.8 |
0.0000 |
| NEAZ |
0.0187 |
0.0150 |
2.2 |
1.8 |
98.0 |
0.2147 |
| SEAZ |
0.0104 |
0.0143 |
1.2 |
1.7 |
99.2 |
0.4650 |
| NM |
0.0187 |
0.0097 |
2.2 |
1.1 |
101.4 |
0.0549 |
| SE |
0.0175 |
0.0074 |
2.1 |
0.9 |
103.4 |
0.0181 |
| CO |
0.0048 |
0.0054 |
0.6 |
0.6 |
104.0 |
0.3756 |
| NWAZ |
-0.0069 |
0.0177 |
-0.8 |
2.1 |
103.2 |
0.6969 |
| CAN |
-0.0033 |
0.0087 |
-0.4 |
1.0 |
102.8 |
0.7027 |
| NE |
0.0022 |
0.0045 |
0.3 |
0.5 |
103.1 |
0.6189 |
| ATL |
0.0005 |
0.0026 |
0.1 |
0.3 |
103.1 |
0.8452 |
| NV |
-0.0265 |
0.0162 |
-3.1 |
1.9 |
100.0 |
0.1028 |
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Table 3. Grand Canyon aerosol extinction trajectory regression attribution
assessment using a zero intercept. |
|
| Source Regions |
Contributions (1/Mm) |
Uncertainty (1/Mm) |
Fraction (%) |
Uncertainty (%) |
Cumulative (%) |
Significance (p value) |
| Intercept |
|
|
|
|
|
|
| PACCoast |
2.4459 |
0.4118 |
20.4 |
3.4 |
20.4 |
0.0000 |
| SWAZ |
2.2834 |
0.4851 |
19.0 |
4.0 |
39.4 |
0.0000 |
| PAC |
1.8368 |
0.3492 |
15.3 |
2.9 |
54.7 |
0.0000 |
| CA |
1.2541 |
0.3297 |
10.4 |
2.7 |
65.1 |
0.0002 |
| NW |
0.7278 |
0.2721 |
6.1 |
2.3 |
71.2 |
0.0079 |
| UT |
0.6164 |
0.3322 |
5.1 |
2.8 |
76.3 |
0.0646 |
| MEX |
0.5079 |
0.2801 |
4.2 |
2.3 |
80.5 |
0.0709 |
| NWAZ |
0.4516 |
0.3032 |
3.8 |
2.5 |
84.3 |
0.1375 |
| SEAZ |
0.3735 |
0.2379 |
3.1 |
2.0 |
87.4 |
0.1175 |
| NM |
0.2480 |
0.1688 |
2.1 |
1.4 |
89.5 |
0.1428 |
| GULF |
0.2260 |
0.1101 |
1.9 |
0.9 |
91.3 |
0.0411 |
| SE |
0.1716 |
0.1271 |
1.4 |
1.1 |
92.8 |
0.1780 |
| CAN |
0.1709 |
0.1457 |
1.4 |
1.2 |
94.2 |
0.2416 |
| NEAZ |
0.0864 |
0.2603 |
0.7 |
2.2 |
94.9 |
0.7401 |
| NE |
0.0802 |
0.0782 |
0.7 |
0.7 |
95.6 |
0.3061 |
| CO |
0.0319 |
0.0937 |
0.3 |
0.8 |
95.9 |
0.7339 |
| ATL |
0.0211 |
0.0449 |
0.2 |
0.4 |
96.0 |
0.6391 |
| NV |
-0.1564 |
0.2647 |
-1.3 |
2.2 |
94.7 |
0.5549 |
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Table 4. Grand Canyon aerosol extinction trajectory regression attribution
assessment including an intercept. |
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| Source Regions |
Contributions (1/Mm) |
Uncertainty (1/Mm) |
Fraction (%) |
Uncertainty (%) |
Cumulative (%) |
Significance (p value) |
| Intercept |
8.2312 |
1.2818 |
68.5 |
10.7 |
68.5 |
0.0000 |
| PACCoast |
1.3932 |
0.4191 |
11.6 |
3.5 |
80.1 |
0.0010 |
| SWAZ |
0.9393 |
0.5002 |
7.8 |
4.2 |
88.0 |
0.0614 |
| PAC |
0.7489 |
0.3683 |
6.2 |
3.1 |
94.2 |
0.0429 |
| CA |
0.5789 |
0.3262 |
4.8 |
2.7 |
99.0 |
0.0770 |
| NW |
0.1831 |
0.2686 |
1.5 |
2.2 |
100.5 |
0.4961 |
| UT |
0.2228 |
0.3171 |
1.9 |
2.6 |
102.4 |
0.4829 |
| MEX |
0.0952 |
0.2701 |
0.8 |
2.2 |
103.2 |
0.7247 |
| NWAZ |
0.0935 |
0.2894 |
0.8 |
2.4 |
104.0 |
0.7467 |
| SEAZ |
-0.0582 |
0.2327 |
-0.5 |
1.9 |
103.5 |
0.8028 |
| NM |
0.1588 |
0.1587 |
1.3 |
1.3 |
104.8 |
0.3177 |
| GULF |
0.1831 |
0.1033 |
1.5 |
0.9 |
106.3 |
0.0776 |
| SE |
0.0707 |
0.1200 |
0.6 |
1.0 |
106.9 |
0.5565 |
| CAN |
-0.0715 |
0.1415 |
-0.6 |
1.2 |
106.3 |
0.6138 |
| NEAZ |
-0.1094 |
0.2457 |
-0.9 |
2.0 |
105.4 |
0.6563 |
| NE |
0.0930 |
0.0733 |
0.8 |
0.6 |
106.2 |
0.2058 |
| CO |
0.0025 |
0.0878 |
0.0 |
0.7 |
106.2 |
0.9775 |
| ATL |
0.0025 |
0.0422 |
0.0 |
0.4 |
106.2 |
0.9521 |
| NV |
-0.7468 |
0.2644 |
-6.2 |
2.2 |
100.0 |
0.0051 |
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