Research ArticleCLIMATE CHANGE

Abrupt recent trend changes in atmospheric nitrogen dioxide over the Middle East

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Science Advances  21 Aug 2015:
Vol. 1, no. 7, e1500498
DOI: 10.1126/sciadv.1500498
  • Fig. 1 Tropospheric NO2 over the Middle East.

    NO2 column densities in 1015 molecules/cm2 observed by OMI, averaged over the period 2005–2014.

  • Fig. 2 NO2 column densities over 16 cities in the Middle East.

    Annual mean NO2 during 2005–2014, indicating NOx emission trend changes around 2010. Vertical bars represent the SEM.

  • Fig. 3 NO2 trend reversal in many locations in the Middle East.

    (A and B) Tropospheric NO2 column density changes in 1015 molecules/cm2 (A) between 2005 and 2010 and (B) between 2010 and 2014.

  • Fig. 4 SO2 trend reversal over the Arabian Gulf.

    (A) SO2 column densities in 1015 molecules/cm2 observed by OMI, averaged over the period 2005–2014. (B and C) SO2 changes (B) between 2005 and 2010 and (C) between 2010 and 2014.

Supplementary Materials

  • Supplementary Materials

    This PDF file includes:

    • Fig. S1. NO2 column densities over 18 cities in the Middle East.
    • Fig. S2. Tropospheric NO2 column density changes in 1015 molecules/cm2 between 2005 and 2014.

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