Growing cloud droplets in moderate turbulence

Nicole Riemer, Anthony Wexler

Research output: Contribution to journalComment/debatepeer-review


With box-model simulations, the development of cloud droplet spectra was calculated using a coagulation kernel which was recently derived from direct numerical simulations. It was found that for typical atmospheric conditions, the turbulent coagulation kernel is several orders of magnitude larger than the commonly used sedimentation kernel for droplets smaller than 100 μm. Without turbulence, after a 30-min simulation only 7% of the total mass was observed in droplets with sizes over 100 μm, while with moderate-intensity turbulence this increased to 79%.

Original languageEnglish (US)
Pages (from-to)632-633
Number of pages2
JournalBulletin of the American Meteorological Society
Issue number5
StatePublished - May 2005
Externally publishedYes

ASJC Scopus subject areas

  • Atmospheric Science


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