Hydrophilic properties of aged soot
Abstract
The global presence of soot has significant effects on regional and global climate, as well as human health. Influence of soot on radiation budget, rain formation and heterogeneous chemistry, and its residence time in the atmosphere are largely dependent on its ability to interact with water. While freshly emitted soot is extremely hydrophobic, oxidation during aging causes soot to become more hydrophilic. Laboratory studies demonstrate that aged soot attracts and retains water, and can be efficiently removed from the troposphere by entrapment in existing liquid cloud droplets or by activation as cloud condensation nuclei.
- Publication:
-
Geophysical Research Letters
- Pub Date:
- January 2005
- DOI:
- 10.1029/2004GL021496
- Bibcode:
- 2005GeoRL..32.1807Z
- Keywords:
-
- Atmospheric Composition and Structure: Aerosols and particles (0345;
- 4801;
- 4906);
- Atmospheric Composition and Structure: Cloud physics and chemistry;
- Atmospheric Composition and Structure: Troposphere: composition and chemistry;
- Atmospheric Composition and Structure: Instruments and techniques;
- Global Change: Atmosphere (0315;
- 0325)