Grantee Research Project Results
Impacts of future climate change and emissions reductions on nitrogen and sulfur deposition over the United States.
Citation:
Tagaris E, Liao K-J, Manomaiphiboon K, Woo J-H, He S, Amar P, Russell AG. Impacts of future climate change and emissions reductions on nitrogen and sulfur deposition over the United States. Geophysical Research Letters 2008;35(8):L08811 (6 pp.).
Abstract:
Potential impacts of global climate change and emissions on the total nitrogen and sulfur deposition over the US are investigated. Three future years' annual average deposition rates (i.e., 2049–2051) are compared with historic ones (i.e., 2000–2002) accounting for existing US and individual State's emission regulations and strategies. Impacts of global climate change alone on regional nitrogen and sulfur deposition are small compared to impacts from emission control-related reductions for the projections used in this study. The combined effect of climate change and emission reductions is a decrease in the annual average nitrogen and sulfur deposition over the US. Reduced nitrogen species dominate oxidized nitrogen deposition in the future. Spatial distribution plots for both components show lower deposition rates in the future mainly in the middle and eastern States where reductions in NOx and SO2 emissions are more pronounced.The perspectives, information and conclusions conveyed in research project abstracts, progress reports, final reports, journal abstracts and journal publications convey the viewpoints of the principal investigator and may not represent the views and policies of ORD and EPA. Conclusions drawn by the principal investigators have not been reviewed by the Agency.