Causes of Haze Assessment (COHA)

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WHPE1

Table 1. WHPE1 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
Pacific Ocean	0.0996	0.0187	15.2	2.9	15.2	0.0000
Texas	0.0935	0.0274	14.3	4.2	29.6	0.0008
Mexico	0.0787	0.0239	12.1	3.7	41.6	0.0012
NWUS	0.0662	0.0152	10.1	2.3	51.8	0.0000
NEUS	0.0538	0.0123	8.2	1.9	60.0	0.0000
Gulf	0.0464	0.0117	7.1	1.8	67.1	0.0001
SwNew Mexico	0.0416	0.0254	6.4	3.9	73.5	0.1037
Arizona	0.0377	0.0178	5.8	2.7	79.2	0.0351
SeNew Mexico	0.0373	0.0198	5.7	3.0	85.0	0.0613
NwNewMexico	0.0343	0.0230	5.2	3.5	90.2	0.1382
SEUS	0.0290	0.0116	4.4	1.8	94.6	0.0131
Pacific Coast	0.0284	0.0175	4.4	2.7	99.0	0.1065
SWUS	0.0227	0.0174	3.5	2.7	102.5	0.1927
Colorado	0.0209	0.0155	3.2	2.4	105.7	0.1774
Atlantic	0.0071	0.0065	1.1	1.0	106.8	0.2778
Oklahoma	-0.0022	0.0111	-0.3	1.7	106.4	0.8417
Utah	-0.0031	0.0129	-0.5	2.0	106.0	0.8112
Canada	-0.0154	0.0129	-2.4	2.0	103.6	0.2331
NeNew Mexico	-0.0302	0.0156	-4.6	2.4	99.0	0.0544

Table 2. WHPE1 ammonium sulfate trajectory regression attribution assessment including an intercept.

Source Regions

Contributions (ug/m3)

Uncertainty (ug/m3)

Fraction (%)

Uncertainty (%)

Cumulative (%)

Significance (p value)

Intercept	0.1097	0.0886	16.8	13.6	16.8	0.2171
Pacific Ocean	0.0877	0.0210	13.4	3.2	30.2	0.0000
Texas	0.0891	0.0276	13.6	4.2	43.9	0.0015
Mexico	0.0690	0.0252	10.6	3.9	54.4	0.0066
NWUS	0.0584	0.0164	9.0	2.5	63.4	0.0005
NEUS	0.0518	0.0124	7.9	1.9	71.3	0.0000
Gulf	0.0411	0.0124	6.3	1.9	77.6	0.0011
SwNew Mexico	0.0298	0.0271	4.6	4.2	82.2	0.2735
Arizona	0.0336	0.0181	5.1	2.8	87.3	0.0643
SeNew Mexico	0.0344	0.0199	5.3	3.1	92.6	0.0858
NwNewMexico	0.0207	0.0255	3.2	3.9	95.8	0.4178
SEUS	0.0256	0.0119	3.9	1.8	99.7	0.0324
Pacific Coast	0.0206	0.0186	3.1	2.9	102.8	0.2707
SWUS	0.0154	0.0184	2.4	2.8	105.2	0.4043
Colorado	0.0185	0.0156	2.8	2.4	108.0	0.2371
Atlantic	0.0053	0.0067	0.8	1.0	108.8	0.4275
Oklahoma	-0.0037	0.0112	-0.6	1.7	108.2	0.7389
Utah	-0.0051	0.0130	-0.8	2.0	107.5	0.6934
Canada	-0.0197	0.0133	-3.0	2.0	104.5	0.1411
NeNew Mexico	-0.0291	0.0156	-4.5	2.4	100.0	0.0642

Table 3. WHPE1 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
Pacific Ocean	1.9329	0.3959	18.0	3.7	18.0	0.0000
Texas	1.7450	0.5803	16.3	5.4	34.3	0.0030
Pacific Coast	1.0770	0.3710	10.0	3.5	44.3	0.0041
Mexico	1.0268	0.5067	9.6	4.7	53.9	0.0441
Gulf	0.8283	0.2468	7.7	2.3	61.6	0.0010
NEUS	0.7701	0.2606	7.2	2.4	68.8	0.0035
NWUS	0.6526	0.3213	6.1	3.0	74.9	0.0436
SwNew Mexico	0.5561	0.5382	5.2	5.0	80.1	0.3028
Arizona	0.5549	0.3764	5.2	3.5	85.3	0.1421
NwNewMexico	0.3848	0.4870	3.6	4.5	88.8	0.4305
SWUS	0.3443	0.3682	3.2	3.4	92.0	0.3509
Canada	0.2277	0.2724	2.1	2.5	94.2	0.4042
Utah	0.1652	0.2737	1.5	2.6	95.7	0.5470
Atlantic	0.1630	0.1378	1.5	1.3	97.2	0.2383
SEUS	0.1498	0.2449	1.4	2.3	98.6	0.5415
SeNew Mexico	0.1198	0.4196	1.1	3.9	99.7	0.7755
Colorado	0.0919	0.3274	0.9	3.1	100.6	0.7793
Oklahoma	-0.1327	0.2358	-1.2	2.2	99.4	0.5742
NeNew Mexico	-0.1790	0.3304	-1.7	3.1	97.7	0.5887

Table 4. WHPE1 aerosol extinction trajectory regression attribution assessment including an intercept.

Source Regions

Contributions (1/Mm)

Uncertainty (1/Mm)

Fraction (%)

Uncertainty (%)

Cumulative (%)

Significance (p value)

Intercept	4.0314	1.8608	37.6	17.3	37.6	0.0315
Pacific Ocean	1.4957	0.4410	13.9	4.1	51.5	0.0008
Texas	1.5834	0.5796	14.8	5.4	66.3	0.0069
Pacific Coast	0.7883	0.3909	7.3	3.6	73.6	0.0451
Mexico	0.6697	0.5283	6.2	4.9	79.9	0.2064
Gulf	0.6359	0.2602	5.9	2.4	85.8	0.0154
NEUS	0.6945	0.2605	6.5	2.4	92.3	0.0083
NWUS	0.3677	0.3444	3.4	3.2	95.7	0.2871
SwNew Mexico	0.1232	0.5694	1.1	5.3	96.9	0.8289
Arizona	0.4039	0.3793	3.8	3.5	100.6	0.2883
NwNewMexico	-0.1140	0.5346	-1.1	5.0	99.6	0.8313
SWUS	0.0730	0.3857	0.7	3.6	100.3	0.8502
Canada	0.0710	0.2794	0.7	2.6	100.9	0.7998
Utah	0.0900	0.2734	0.8	2.5	101.8	0.7425
Atlantic	0.0973	0.1398	0.9	1.3	102.7	0.4874
SEUS	0.0249	0.2494	0.2	2.3	102.9	0.9207
SeNew Mexico	0.0136	0.4185	0.1	3.9	103.0	0.9740
Colorado	0.0013	0.3270	0.0	3.0	103.0	0.9969
Oklahoma	-0.1881	0.2350	-1.8	2.2	101.3	0.4245
NeNew Mexico	-0.1369	0.3279	-1.3	3.1	100.0	0.6769