Emissions trends

Mational Air Quality Emissions Trends Keport, 1989, Pub. No. EPA-450/4-91-003, U.S. Environmental Protection Agency, Research Triangle Park,... 

National Annual SO2 Emissions Trends, 1995—2015, EPA-454-R-95-001, Environmental Protection Agency, Washington, D.C., June 1995. 

FIGURE S.30 Comparison of ambient levels of t h maximum ozone, annual average of total suspended particulate matter (TSP), and sulfur dioxide in selected cities from around the world to illustrate the v tacion in these levels from countr)i to country with respect to the United States. [Reproduced from the National Air Quality and Emission Trends Report (1992), with permission.] ... 

Figure 16-17. Emission trends vs. A/F ratio for a typical engine/turbine.

SOURCE U.S. EPA National Air Quality and Emissions Trends Report, 1998, Table 2-1, p 9. 

The National Air Honltorlno Prooramt Air Quality and Emissions Trends. Annual Report, Vol. 1, EPA Publication EPA-450/1-73-001, Research Triangle Park, NC, US, 1973. 

Figure 2. Temporal emission trends of PCDD/Fs (a) and y-HCH (b) in Europe (Mantseva et al., 2004).

Pierson, W. R., Automotive CO Emission Trends Derived from Measurements in Highway Tunnels, J. Air Waste Manage. Assoc., 45, 831-832 (1995). 

Environmental Protection Agency National Air Quality and Emissions Trends Report—f997 http // www.epa.gov/oar/aqtrnd97 /... 

National Air Quality and Emission Trends Report 1988 U.S. Environmental Protection Agency. Office of Air Quality Planning and Standards Washington, DC, 1990 EPA 450/4-90-002. 

Concentration —< — Emission -Linear emission trend -Linear concentration trend I... 

The fact that trends in measured NH3 concentrations have not reflected reduced animal numbers in Central Europe (e.g. [7]) has been a major topic for debate. Similarly, then the effects of emission abatement policies in the Netherlands [85] and Denmark [51] have not fully corresponded to the expectations. Recent findings (e.g. [86]) suggest that increasing NH3 concentrations that have been observed in Eastern Europe is a result of both local and regional reduction in SO2 emissions, which have caused an increased atmospheric lifetime of NH3. Such relationships are likely to be of general concerns, thus causing uncertainties in direct relation of emission trends with locally observed concentrations (Table 2). 

Meadows M. (2000). United Kingdom methane emissions Trends, projections and mitigation options. Proceedings of the Second International Methane Mitigation Conference (June 18-23, 2000, Novosibirsk). Novosibirsk State University Publ., Novosibirsk, pp. 37-44. 

Figures 6, 7, and 8 show the results for CO, HC, and NO, respectively, for each of the three burner configurations, although there is no significant difference in the CO and HC emission trends for the three variations. The solid curves and open symbols represent data for jet fuel-only operation while the broken curves and solid symbols are for mixed fuel operation.

United States Environmental Protection Agency (2000a) National Air Pollutant Emission Trends, 1900-1998. EPA-454/R-00-002, US Govt. Printing Office. 

Table 4.1 Greenhouse gas emission trends (Mt (. (he), the Kyoto target and different projections in the context of Germany... 

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