Physics
Scientific paper
Jan 2001
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2001georl..28..239s&link_type=abstract
Geophysical Research Letters, Volume 28, Issue 2, p. 239-242
Physics
42
Atmospheric Composition And Structure: Aerosols And Particles, Atmospheric Composition And Structure: Biosphere/Atmosphere Interactions, Hydrology: Limnology
Scientific paper
It is well known that the atmosphere is a conveyor of microorganisms, and that bacteria can act as ice or cloud condensation nuclei, but clouds have not been considered as a site where organisms can live and reproduce. Here we show that bacteria in cloud droplets collected at high altitudes are actively growing and reproducing at temperatures at or below 0°C. Since ~60% of the earth surface is covered by clouds, cloud water should be considered as a microbial habitat.
Psenner Roland
Puxbaum Hans
Sattler Birgit
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