Biomass burning as a potential source for atmospheric ice nuclei: Western wildfires and prescribed burns
書誌事項
- 公開日
- 2012-06
- 権利情報
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- http://onlinelibrary.wiley.com/termsAndConditions#vor
- DOI
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- 10.1029/2012gl051915
- 公開者
- American Geophysical Union (AGU)
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説明
<jats:p>The sources, abundance and nature of atmospheric particles that serve as ice nuclei (IN) for cold cloud formation remain some of the most important, yet poorly‐characterized, features of aerosol‐cloud interactions that indirectly affect climate. Although a great deal of effort has focused on characterizing the ice nucleating ability of mineral dusts, less is known about carbonaceous particles. A primary source for carbonaceous IN is from biomass combustion. Here we report new measurements of IN activity at −30°C and above water saturation from biomass burning generated particles from prescribed burns and wildfires in the western US. These measurements suggest a range of IN activity, with variability largely dependent on the intensity of the fire. Although the fraction of particles generated during burns which serve as IN is quite small, the large numbers of particles generated in fires make biomass burning a potentially important source of IN to the atmosphere.</jats:p>
収録刊行物
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- Geophysical Research Letters
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Geophysical Research Letters 39 (11), 2012-06
American Geophysical Union (AGU)