Lifetimes and Loss mechanisms of NO_{3} and N_{2}O_{5} during the AQABA ship campaign
Abstract
We report on measurements of NO2, NO3, and N2O5 made by thermal-dissociation Cavity-Ringdown Spectroscopy (TD-CRDs) taken during the Air Quality and Climate Change in the Arabian BAsin (AQABA) campaign in June-August 2017. N2O5 was observed on a total of 18 nights and ranged from below the limit of detection (∼6 ppt) to ∼200 ppt. In this data set, which covers the Mediterranean Sea, Red Sea, Arabian Sea and Arabian Gulf regions, we derive steady-state lifetimes (τss) of NO3 and N2O5 and perform an analysis on the night-time loss processes due to direct gas-phase reaction with volatile organic compounds (VOCs), reaction with NO, heterogeneous loss processes (e.g. reaction of N2O5 on aerosol) and dry deposition.
- Publication:
-
EGU General Assembly Conference Abstracts
- Pub Date:
- April 2019
- Bibcode:
- 2019EGUGA..2111365S