Bacterial growth in supercooled cloud droplets | Zendy

Sattler Birgit | Zendy; Puxbaum Hans | Zendy; Psenner Roland | Zendy

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Bacterial growth in supercooled cloud droplets

Author(s) -

Sattler Birgit,

Puxbaum Hans,

Psenner Roland

Publication year - 2001

Publication title -

geophysical research letters

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 2.007

H-Index - 273

eISSN - 1944-8007

pISSN - 0094-8276

DOI - 10.1029/2000gl011684

Subject(s) - supercooling , cloud condensation nuclei , ice nucleus , astrobiology , cloud computing , atmosphere (unit) , atmospheric sciences , cloud physics , condensation , environmental science , liquid water content , ice crystals , meteorology , geology , physics , nucleation , aerosol , computer science , thermodynamics , operating system

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.

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