Satellite (OMI) and Surface Observations Confirm Steady Decline of US NOx Emissions over the 2004-2017 Period
Rachel F. Silvern, Harvard Univ., Cambridge, MA; and D. J. Jacob, M. Sulprizio, L. J. Mickley, K. R. Travis, E. A. Marais, R. C. Cohen, J. L. Laughner, S. Choi, and J. Joiner