Trends in sulfur and nitrogen species at collocated NTN-CASTNET sites

Christopher M.B. Lehmann; Van C. Bowersox; Susan M. Larson

Trends in sulfur and nitrogen species at collocated NTN-CASTNET sites

Christopher M.B. Lehmann, Van C. Bowersox, Susan M. Larson

Research output: Contribution to journal › Conference article › peer-review

Abstract

The spatial and temporal trends in wet and dry deposition were evaluated using data from the National Atmospheric Deposition Program National Trends Network (NTN) and the EPA's Clean Air Status and Trends Network (CASTNET). Data from 19 NTN-CASTNET sites collocated within 10 km were considered from 1990 to 2002. Seasonal mean concentrations of sulfur and nitrogen species were evaluated using the Seasonal Kendall Trend test to determine trend direction, statistical significance. On a station-by-station basis, trend magnitudes were highest for SO₂, followed by particulate sulfate and aqueous sulfate. For the sulfur species evaluated, trends in SO₂ were generally of higher magnitude than trends in particulate sulfate and aqueous sulfate. This is an abstract of a paper presented at the 98th AWMA Annual Conference and Exhibition (Minneapolis, MN 6/21-24/2005).

Original language	English (US)
Journal	Proceedings of the Air and Waste Management Association's Annual Conference and Exhibition, AWMA
Volume	2005
State	Published - 2005
Event	Air and Waste Management Association's - 98th annual Conference and Exhibition - Minneapolis, MN, United States Duration: Jun 21 2005 → Jun 24 2005

ASJC Scopus subject areas

General Environmental Science
General Energy

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title = "Trends in sulfur and nitrogen species at collocated NTN-CASTNET sites",

abstract = "The spatial and temporal trends in wet and dry deposition were evaluated using data from the National Atmospheric Deposition Program National Trends Network (NTN) and the EPA's Clean Air Status and Trends Network (CASTNET). Data from 19 NTN-CASTNET sites collocated within 10 km were considered from 1990 to 2002. Seasonal mean concentrations of sulfur and nitrogen species were evaluated using the Seasonal Kendall Trend test to determine trend direction, statistical significance. On a station-by-station basis, trend magnitudes were highest for SO2, followed by particulate sulfate and aqueous sulfate. For the sulfur species evaluated, trends in SO2 were generally of higher magnitude than trends in particulate sulfate and aqueous sulfate. This is an abstract of a paper presented at the 98th AWMA Annual Conference and Exhibition (Minneapolis, MN 6/21-24/2005).",

author = "Lehmann, {Christopher M.B.} and Bowersox, {Van C.} and Larson, {Susan M.}",

year = "2005",

language = "English (US)",

volume = "2005",

journal = "Proceedings of the Air and Waste Management Association's Annual Conference and Exhibition, AWMA",

issn = "1052-6102",

note = "Air and Waste Management Association's - 98th annual Conference and Exhibition ; Conference date: 21-06-2005 Through 24-06-2005",

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T1 - Trends in sulfur and nitrogen species at collocated NTN-CASTNET sites

AU - Lehmann, Christopher M.B.

AU - Bowersox, Van C.

AU - Larson, Susan M.

PY - 2005

Y1 - 2005

N2 - The spatial and temporal trends in wet and dry deposition were evaluated using data from the National Atmospheric Deposition Program National Trends Network (NTN) and the EPA's Clean Air Status and Trends Network (CASTNET). Data from 19 NTN-CASTNET sites collocated within 10 km were considered from 1990 to 2002. Seasonal mean concentrations of sulfur and nitrogen species were evaluated using the Seasonal Kendall Trend test to determine trend direction, statistical significance. On a station-by-station basis, trend magnitudes were highest for SO2, followed by particulate sulfate and aqueous sulfate. For the sulfur species evaluated, trends in SO2 were generally of higher magnitude than trends in particulate sulfate and aqueous sulfate. This is an abstract of a paper presented at the 98th AWMA Annual Conference and Exhibition (Minneapolis, MN 6/21-24/2005).

AB - The spatial and temporal trends in wet and dry deposition were evaluated using data from the National Atmospheric Deposition Program National Trends Network (NTN) and the EPA's Clean Air Status and Trends Network (CASTNET). Data from 19 NTN-CASTNET sites collocated within 10 km were considered from 1990 to 2002. Seasonal mean concentrations of sulfur and nitrogen species were evaluated using the Seasonal Kendall Trend test to determine trend direction, statistical significance. On a station-by-station basis, trend magnitudes were highest for SO2, followed by particulate sulfate and aqueous sulfate. For the sulfur species evaluated, trends in SO2 were generally of higher magnitude than trends in particulate sulfate and aqueous sulfate. This is an abstract of a paper presented at the 98th AWMA Annual Conference and Exhibition (Minneapolis, MN 6/21-24/2005).

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SN - 1052-6102

VL - 2005

JO - Proceedings of the Air and Waste Management Association's Annual Conference and Exhibition, AWMA

JF - Proceedings of the Air and Waste Management Association's Annual Conference and Exhibition, AWMA

T2 - Air and Waste Management Association's - 98th annual Conference and Exhibition

Y2 - 21 June 2005 through 24 June 2005

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Trends in sulfur and nitrogen species at collocated NTN-CASTNET sites

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