NOx emissions in South America (TROPOMI)

Monthly mean NOx surface emission estimates derived from TROPOMI observations of tropospheric NO2 columns by the DECSO algorithm. The data products are developed and generated within the SOLFEO project of ESA.

Nitrogen oxides by TROPOMI   satellite data at TEMIS 


Image of NOx emissions (v5.2) for 2018 | 2019

Download DECSO v5.2

Monthly NOx emissions of the region from Buenos Aires to Rio de Janeiro for the year: 2018 | 2019
Monthly NOx emissions of the region from Santiago to North Chile for the year: 2018 | 2019


  • More detailed information about the NOx data product can be found in the Product User Guide.
  • Information about the data versions can be found here.


If you used NOx emission data for a publication (research or otherwise), or for any other purpose, please refer to the following publication:

For DECSO version 5.2 (TROPOMI):

  • van der A, R.J., de Laat, A.T.J., Ding, J., Eskes, H.J., Connecting the dots: NOx emissions along a West Siberian natural gas pipeline, npj Clim Atmos Sci 3, 16,, 2020

For DECSO version 5.1qa:

  • Ding, J., van der A, R. J., Mijling, B., Jalkanen, J.-P., Johansson, L. and Levelt, P. F., Maritime NOx emissions over Chinese seas derived from satellite observations. Geophysical Research Letters, 45., 2018

For older versions:

  • Ding, J., R.J. van der A, B. Mijling and P.F. Levelt, Space-based NOx emission estimates over remote regions improved in DECSO Atmospheric Measurement Techniques, 2017, 10, 925-938, doi:10.5194/amt-10-925-2017.

For validation results:

  • Ding, J., Miyazaki, K., van der A, R.J., Mijling, B., Kurokawa, J., Cho, S., Janssens-Maenhout, G., Zhang, Q., Liu, F., and Levelt, P.F., Intercomparison of NOx emission inventories over East Asia Atm. Chem. Phys., 2017, 17, 10125-10141,


  • Ding, J., R.J. van der A, B. Mijling, P.F. Levelt, and N. Hao (2015). NOx emission estimates during the 2014 Youth Olympic Games in Nanjing. Atmos. Chem. Phys. Discuss., 15, 6337-6372, doi:10.5194/acpd-15-6337-2015. [pdf]
  • Mijling, B., R.J. van der A, R. J., and Q. Zhang (2013). Regional nitrogen oxides emission trends in East Asia observed from space. Atmos. Chem. Phys., 13, 12003-12012, doi:10.5194/acp-13-12003-2013. [pdf]
  • Mijling, B. and R. van der A (2012). Using daily satellite observations to estimate emissions of short-lived air pollutants on a mesoscopic scale. J. Geophys. Res. 117, D17, doi:10.1029/2012JD017817. [pdf]
  • Mijling, B., R. van der A, K. Boersma, M. Van Roozendael, I. De Smedt, and H. Kelder (2009). Reductions of NO2 detected from space during the 2008 Beijing Olympic Games. Geophys. Res. Lett. 36, L13801. [pdf]

Data provider

   Royal Netherlands Meteorological Institute (KNMI)  • contact person: Ronald van der A