Elmira Air Monitoring Site Trends (1987-2007)

Elmira Acid Deposition Data, 1987 - 2007
Year	Precip. in	pH	[SO4] ippm	[NO3] ippm	[NH4] ippm	SO4 Dep. kg/ha	NO3 Dep. kg/ha	NH4 Dep. kg/ha
1987	31.84	4.25	4.52	2.84	0.10
1988	30.22	4.34	3.13	1.75	0.40	24.02	13.43	3.09
1989	37.98	4.24	2.40	1.52	0.29	23.17	14.69	2.81
1990	38.89	4.23	2.69	1.45	0.36	26.62	14.31	3.56
1991	25.86	4.18	3.18	1.86	0.45	20.90	12.24	2.98
1992	38.97	4.20	2.75	1.68	0.34	27.26	26.67	3.37
1993	35.29	4.19	2.92	1.59	0.37	26.18	14.24	3.31
1994	34.02	4.31	2.57	1.56	0.30	22.18	13.50	2.62
1995	28.13	4.46	2.01	1.53	0.61	14.34	10.91	4.35
1996	45.64	4.33	2.27	2.02	0.45
1997	22.09	4.28	2.45	1.86	0.52
1998	29.78	4.31	2.30	1.74	0.58	17.42	13.17	4.36
1999	24.22	4.32	2.07	1.6	0.4	12.72	9.85	2.45
2000	31.15	4.29	2.19	1.93	0.44	17.31	15.28	3.47
2001	25.66	4.37	2.03	1.81	0.54	13.22	11.78	3.49
2002	34.24	4.48	1.73	1.51	0.36	15.01	13.17	3.09
2003	39.86	4.46	1.76	1.66	0.41	17.90	16.56	4.06
2004	40.41	4.48	2.26	1.51	0.40	23.14	15.50	4.04
2005	35.75	4.46	1.75	2.06	0.47	16.33	19.47	4.53
2006	36.10	4.45	1.95	1.46	0.37	17.67	13.13	3.36
2007	30.86	4.51	2.07	1.26	0.35	16.17	9.85	2.78

Blanks indicate that the rainfall criteria were not satisfied. That is, analysis of at least 75% of the annual and 50% of the quarterly precipitation.

pH/Ion Concentration (Elmira, 1987-2007)

Precipitation / Ion Deposition (Elmira, 1987-2007)