OMI NOx Scale Factors

We use tropospheric NO2 columns retrieved from the OMI satellite instrument, along with knowledge of how these columns respond to changes in NOx emissions determined from a global chemical transport model (GEOS-Chem), to forecast 2006 to 2010 NOx emissions using 2005 bottom-up NOx inventories. Colorbar in the plot represents the change of anthropogenic NOx emissions from 2005 to 2010 (multiply by 100 to get a percent change).


Lamsal, L.N., R.V. Martin, A. Padmanabhan, A. van Donkelaar, Q. Zhang, C.E. Sioris, K. Chance, T.P. Kurosu and M.J. Newchurch, Application of satellite observations for timely updates to global anthropogenic NOx emission inventories, Geophys. Res. Lett., 38, L05810, doi:10.1029/2010GL046476, 2011 [Full Text (PDF)]

Available Datasets:

Annual mean scaling factors are provided in an hierarchical data format (HDF) containing the latitude, longitude, and annual emission changes from 2005 to 2010. OMI-based NOx scale factors (annual) for 2005-2010 [.HDF].