Articles | Volume 20, issue 1
Research article
07 Jan 2020
Research article |  | 07 Jan 2020

The changing role of organic nitrates in the removal and transport of NOx

Paul S. Romer Present, Azimeh Zare, and Ronald C. Cohen

Data sets

Berkeley High Resolution (BEHR) OMI NO2 – Gridded pixels, monthly profiles J. Laughner, Q. Zhu, and R. C. Cohen

ITCT 2002 WP-3D Data ITCT Science Team

INTEX-A DC-8 Aircraft data INTEX-A Science Team

INTEX-B DC-8 aircraft data INTEX-B Science Team

BEARPEX 2007 field campaign data BEARPEX 07 Science Team

ARCTAS-B DC-8 aircraft data ARCTAS-B Science Team arctas

BEARPEX 2009 field campaign data BEARPEX 09 Science Team

CALNEX 2010 WP-3D data CALNEX Science Team

CALNEX 2010 Bakersfield site data CALNEX Science Team

DC3 Field Campaign Data from DC-8 aircraft DC3 Science Team

SOAS 2013 Centreville site data SOAS Science Team

SEAC4RS field campaign data SEAC4RS Science Team

FRAPPÉ C-130 aircraft data FRAPPÉ Science Team

KorUS-AQ Airborne Mission KORUS-AQ Science Team

Short summary
The chemistry of nitrogen oxides (NOx) affects both air quality and climate through its role in the production of ozone and secondary aerosols. We find that recent changes in emissions have caused a significant shift in the chemical loss of NOx away from direct production of HNO3 and towards production of organic nitrates. This shift is leading to a flatter distribution of NOx across the United States and helping transform air pollution from a local issue into a broader regional concern.
Final-revised paper