Göran Frank
Director of graduate studies
"Missing" cloud condensation nuclei in peat smoke
Author
Summary, in English
We characterized particulate emissions from vegetation fires by burning Indonesian and German peat and other biomass fuels in a controlled laboratory setting. By measuring cloud condensation nuclei (CCN) both as a function of particle diameter (dp) and supersaturation (S), we discovered particles in peat smoke that were not activated to cloud droplets at high S (1.6%). These hydrophobic particles were present predominantly in the size range of dp > 200 nm, where typical wood burning particles are activated at S < 0.3%. Ambient measurements during the 1997 Indonesian peat fires suggested that peat smoke particles are highly soluble and therefore efficient CCN. Our CCN measurements performed on fresh smoke from peat samples of the same area suggest that these Indonesian smoke particles probably acquired soluble material through chemical processing in the atmosphere. Freshly emitted peat smoke particles are at least partially not very efficient CCN.
Publishing year
2005-06-16
Language
English
Pages
1-4
Publication/Series
Geophysical Research Letters
Volume
32
Issue
11
Document type
Journal article
Publisher
American Geophysical Union (AGU)
Status
Published
ISBN/ISSN/Other
- ISSN: 0094-8276