How well can assimilation of geostationary trace-gas observations constrain NOx emissions in the US?

Chia-Hua Hsu, University of Colorado Boulder, Mechanical Engineering, Boulder, United States, Daven K Henze, University of Colorado Boulder, Boulder, United States, Arthur P Mizzi, NASA Ames Research Center/BAERI, Moffett Field, United States and Brian C McDonald, NOAA Chemical Sciences Laboratory, NOAA Earth System Research Laboratories, Boulder, United States