Ubiquity of Biological Ice Nucleators in Snowfall

@article{Christner2008UbiquityOB,
  title={Ubiquity of Biological Ice Nucleators in Snowfall},
  author={Brent C Christner and Cindy E. Morris and Christine M. Foreman and Rongman Cai and David C. Sands},
  journal={Science},
  year={2008},
  volume={319},
  pages={1214 - 1214}
}
Despite the integral role of ice nucleators (IN) in atmospheric processes leading to precipitation, their sources and distributions have not been well established. We examined IN in snowfall from mid- and high-latitude locations and found that the most active were biological in origin. Of the IN larger than 0.2 micrometer that were active at temperatures warmer than -7�C, 69 to 100% were biological, and a substantial fraction were bacteria. Our results indicate that the biosphere is a source of… 

Topics from this paper

Atmospheric Processing and Variability of Biological Ice Nucleating Particles in Precipitation at Opme, France
Atmospheric ice nucleating particles (INPs) contribute to initiate precipitation. In particular, biological INPs act at warmer temperatures than other types of particles (>−10 °C) therefore
Contributions of biogenic material to the atmospheric ice-nucleating particle population in North Western Europe
TLDR
It is shown that at a temperate site all INPs active above −18 °C at concentrations >0.1 L−1 are destroyed on heating, consistent with these INPs being of biological origin, and it is suggested that biogenic material is important for primary ice production in this region.
Contributions of biogenic material to the atmospheric ice-nucleating particle population in North Western Europe
A minute fraction of atmospheric particles exert a disproportionate effect on the phase of mixed-phase clouds by acting as ice-nucleating particles (INPs). To understand the effects of these
Biogenic Sources of Ice Nucleation Particles at the High Arctic Site Villum Research Station.
TLDR
The majority of INP was of proteinaceous, and possibly of bacterial origin, and was found in air during summer and in snowfall during springtime, finding that INP active at high sub-zero temperatures were present both in spring and summer.
The seasonal cycle of ice-nucleating particles linked to the abundance of biogenic aerosol in boreal forests
Abstract. Ice-nucleating particles (INPs) trigger the formation of cloud ice crystals in the atmosphere. Therefore, they strongly influence cloud microphysical and optical properties, as well as
Variation of Ice Nucleating Particles in the European Arctic Over the Last Centuries
The historical development of ice nucleating particle concentrations (NINP) is still unknown. Here, we present for the first time NINP from the past 500 years at two Arctic sites derived from ice
Geographic, seasonal, and precipitation chemistry influence on the abundance and activity of biological ice nucleators in rain and snow
TLDR
The results indicate that biological IN are ubiquitous in precipitation and that for some geographic locations the activity and concentration of these particles is related to the season and precipitation chemistry.
...
1
2
3
4
5
...

References

SHOWING 1-10 OF 14 REFERENCES
Microbiology and atmospheric processes: the role of biological particles in cloud physics
Abstract. As part of a series of papers on the sources, distribution and potential impact of biological particles in the atmosphere, this paper introduces and summarizes the potential role of
Abundance of Cellular Material and Proteins in the Atmosphere
TLDR
It turns out that cellular material and proteins compose up to 25% of the atmospheric aerosol, and the source strength of the biogenic aerosol in general must be corrected and should be estimated on the order of other major aerosol sources.
The structures and functions of ice crystal-controlling proteins from bacteria.
  • H. Kawahara
  • Biology, Medicine
    Journal of bioscience and bioengineering
  • 2002
TLDR
A review on the current knowledge of the structure and the function of these three types of proteins, which are capable of interacting with ice itself or its nuclei from bacteria.
Localization of ice nucleation activity and the iceC gene product in Pseudomonas syringae and Escherichia coli.
TLDR
The iceC gene product is located at and is maximally active in or on the outer membrane of cells of the source strain and heterologous strains.
Biogeosciences
  • Biogeosciences
  • 2007
J. Phys. (Paris)
  • J. Phys. (Paris)
  • 2004
J. Biosci. Bioeng
  • J. Biosci. Bioeng
  • 2002
Mol. Plant-Microbe Interact
  • Mol. Plant-Microbe Interact
  • 1989
...
1
2
...