Abstract
Aerosols produced over forests impair visibility and may affect climate by scattering and absorbing solar radiation and by serving as cloud condensation nuclei. Here, we introduce, to our knowledge, a new route to secondary organic aerosol formation from isoprene and its gas-phase oxidation products, methacrolein and methacrylic acid, namely, multiphase acid-catalysed oxidation with hydrogen peroxide, a perfect analogue to atmospheric sulphate formation. We demonstrate that the formation of major secondary organic aerosol components that are present in natural forest aerosols collected at K-puszta, Hungary, during the summer of 2003, namely, 2-methyltetrols and 2,3-dihydroxymethacrylic acid, can be explained by this mechanism.
| Original language | English |
|---|---|
| Pages (from-to) | 4093-4098 |
| Number of pages | 6 |
| Journal | Atmospheric Environment |
| Volume | 38 |
| Issue number | 25 |
| Early online date | 20 Jul 2004 |
| DOIs | |
| Publication status | Published - Aug 2004 |
| Externally published | Yes |
UN SDGs
This output contributes to the following UN Sustainable Development Goals (SDGs)
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SDG 13 Climate Action
Keywords
- Secondary organic aerosol
- Biogenic hydrocarbons
- Isoprene
- Photo-oxidation
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