CENRS Air Quality Research Subcommittee
Table of Contents
- Executive Summary
- What is acid rain?
- What are the effects of acid rain?
- Why is this report being sent to Congress, and what is the role of the National Acid Precipitation Assessment Program (NAPAP) in the report?
- What are the results of implementing Title IV of the 1990 Clean Air Act Amendments?
- What is the role of cap and trade in the success of the Acid Rain Program?
- What is the future of current clean air rules?
- Are ecosystems recovering from the effects of acid rain?
- What is the importance of long-term environmental monitoring in understanding the effects of acid rain?
- What acid rain–related topics are currently at the forefront of scientific knowledge?
- Reduced SO2 and NOx Emissions
- Significant Health Benefits
- Improved Aquatic Ecosystem Condition
- Looking Forward
- Structure of the Report
- 1. Acid Rain Program Elements and Implementation
- Overview of Emission Reductions
- Acid Rain Program Design
- Title IV Affected Sources
- SO2 Compliance
- NOx Compliance
- 2008 SO2 Allowance Market
- Program Benefits and Costs
- Program Assessment Tools
- Emission Monitoring and Reporting
- Air Quality, Deposition, and Ecological Monitoring
- 2. Results of the Acid Rain Program: Status and Trends of Emissions, Deposition, Air Quality, Surface Water, and Visibility, 1990 to 2008
- SO2 Emissions
- NOx Emissions
- Air Quality
- SO2 and Sulfate
- NOx and Nitrate
- Acid Deposition
- Sulfur Deposition
- Nitrogen Deposition (NO3- and Ammonium [NH4+])
- Surface Water Monitoring
- Case Study - Critical Loads for Lakes and Streams
- 3. Effects of Acid Deposition on Ecosystems: Advances in the State-of-the Science
- Effects of Atmospheric Deposition on Aquatic and Terrestrial Ecosystems
- Ecosystem Recovery in Aquatic and Terrestrial Ecosystems of the Eastern United States
- Current Effects of Atmospheric Deposition on Aquatic and Terrestrial Ecosystems in the Rocky Mountain Region of the United States
- Current Effects of Atmospheric Nitrogen Deposition on Terrestrial and Aquatic Ecosystems in the Far Western United States
- Effects of Atmospheric Nitrogen Deposition on Coastal Estuaries
- Emerging Issues at the Interface of Science and Policy in Managing the Effects of Acid Deposition on Ecosystems
- Critical Loads
- Atmospheric Deposition and Ecosystem Services
- What are the Implications of Ongoing and Future Changes in Climate and the Carbon Cycle for the Effects of Acid Deposition on Ecosystems?
- Implications of Climatically Driven Changes in the Species Composition of Ecosystems
- Climate Warming Will Affect Many Temperature-Sensitive Biogeochemical Processes in Ecosystems
- Implications of Changes in Carbon Dioxide Concentrations in the Atmosphere
- Changes in the Water Cycle are Key to Understanding Ecosystem Effects
- Nitrogen Availability has Important Implications for the Response of Ecosystems to Climate Change
- Dissolved Organic Carbon - Acid Deposition Interactions: A Case Study of Climate Change
- Summary of Climate Change - Atmospheric Deposition Linkages
- Multi-Pollutant Interactions in Ecosystems
- Ozone Interactions with Atmospheric Sulfur and Nitrogen Deposition
- Mercury Interactions with Atmospheric Sulfur and Nitrogen Deposition
- 4. Beyond Title IV - Ecological Impacts of Further Emission Reductions
- Recent Assessments
- Analysis of the Environmental Impact of Further Air Emission Reductions
- Scenarios Analyzed
- Changes in Sulfur Deposition
- Changes in Nitrogen Deposition
- Changes in the Ecological Condition of Lakes and Streams
- Critical Loads
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