A5079213033- Atmospheric chemistry and aerosols
- Atmospheric aerosols and clouds
- Vehicle emissions and performance
- Air Quality and Health Impacts
- Isotope Analysis in Ecology
- Atmospheric and Environmental Gas Dynamics
- Air Quality Monitoring and Forecasting
- Atmospheric Ozone and Climate
Max Planck Institute for Chemistry
2024-2025
Abstract New particle formation (NPF) in the tropical upper troposphere is a globally important source of atmospheric aerosols 1–4 . It known to occur over Amazon basin, but nucleation mechanism and chemical precursors have yet be identified 2 Here we present comprehensive situ aircraft measurements showing that extremely low-volatile oxidation products isoprene, particularly certain organonitrates, drive NPF Amazonian troposphere. The organonitrates originate from OH-initiated isoprene...
The two trace gases peroxyacetyl nitrate (PAN, CH3C(O)OONO2) and peracetic acid (PAA, CH3C(O)OOH) are products of reactions the acetylperoxy radical with NO2 HO2, respectively. They formed during oxidation anthropogenic biogenic VOCs in biomass burning. PAN represents an important source NOx remote regions, while PAA is indicator fate peroxy radicals. To date, there have been very few simultaneous measurements PAA. In this study, we present airborne using a chemical ionization mass...
<p>Even if methane (CH<sub>4</sub>) is one of the most important anthropogenic greenhouse gases, its sources in urban areas are quantitatively highly uncertain. Plant et al. (2019) highlights that current inventories probably substantially underestimate real emissions. Bottom-up estimates from German Environmental Agency show uncertainties even higher than 300 % (LUBW 2014). Yet for decision makers it essential to know strength potential order...