Reconciling the differences between a bottom-up and inverse-estimated FFCO2 emissions estimate in a large US urban area oleh Kevin R. Gurney, Jianming Liang, Risa Patarasuk, Darragh O'Keeffe, Jianhua Huang, Maya Hutchins, Thomas Lauvaux, Jocelyn C. Turnbull, Paul B. Shepson