期刊
NATURE GEOSCIENCE
卷 5, 期 7, 页码 453-458出版社
NATURE PUBLISHING GROUP
DOI: 10.1038/ngeo1499
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资金
- European Research Council [278277]
- Vetenskapsradet
- European FP7 Integrated project PEGASOS [265148]
- Electric Power Research Institute (EPRI)
- US Department of Energy [DESC0007075]
- US National Science Foundation [AGS1136479, CHE1012293]
- Academy of Finland [133872, 139656]
- Academy of Finland (AKA) [133872, 133872] Funding Source: Academy of Finland (AKA)
- Div Atmospheric & Geospace Sciences
- Directorate For Geosciences [1136479] Funding Source: National Science Foundation
- Division Of Chemistry
- Direct For Mathematical & Physical Scien [1012293] Funding Source: National Science Foundation
- European Research Council (ERC) [278277] Funding Source: European Research Council (ERC)
Aerosols have a strong, yet poorly quantified, effect on climate. The growth of the smallest atmospheric particles from diameters in the nanometre range to sizes at which they may act as seeds for cloud droplets is a key step linking aerosols to clouds and climate. In many environments, atmospheric nanoparticles grow by taking up organic compounds that are derived from biogenic hydrocarbon emissions. Several mechanisms may control this uptake. Condensation of low-volatility vapours and formation of organic salts probably dominate the very first steps of growth in particles close to 1 nm in diameter. As the particles grow further, formation of organic polymers and effects related to the phase of the particle probably become increasingly important. We suggest that dependence of particle growth mechanisms on particle size needs to be investigated more systematically.
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