Science needs for continued development of total nitrogen deposition budgets in the United States

Abstract

The objectives of this white paper are to describe the state of the science with respect to total Nr deposition budgets in the United States and the research needed to improve these budgets from both measurement and modeling perspectives. The document is intended to serve as a plan for TDep research activities but also, more broadly, to provide program managers, natural resource managers, policy makers and scientists with an understanding of (1) the need for complete and accurate Nr deposition budgets to protect ecosystem health and human welfare, and (2) the linkages between the underlying policy-relevant science questions and the specific knowledge and data gaps needed to improve Nr deposition budgets.

Citation

Walker, J.T.; Beachley, G.M.; Amos, H.M.; Baron, J.S.; Bash, J.; Baumgardner, R.; Bell, M.D.; Benedict, K.B.; Chen, X.; Clow, D.W.; Cole, A.; Coughlin, J.G.; Cruz, K.; Daly, R.W.; Decina, S.M.; Elliott, E.M.; Fenn, M.E.; Ganzeveld, L.; Gebhart, K.; Isil, S.S.; Kerschner, B.M.; Larson, R.S.; Lavery, T.; Lear, G.G.; Macy, T.; Mast, M.A.; Mishoe, K.; Morris, K.H.; Padgett, P.E.; Pouyat, R.V.; Puchalski, M.; Pye, H.O.T.; Rea, A.W.; Rhodes, M.F.; Rogers, C.M.; Saylor, R.; Scheffe, R.; Schichtel, B.A.; Schwede, D.B.; Sexstone, G.A.; Sive, B.C.; Templer, P.H.; Thompson, T.; Tong, D.; Wetherbee, G.A.; Whitlow, T.H.; Wu, Z.; Yu, Z.; Zhang, L. 2019. Science needs for continued development of total nitrogen deposition budgets in the United States. U.S. Environmental Protection Agency, Washington, DC, EPA 601/R-19/001.