The effects of turbulent collision–coalescence on precipitation formation and precipitation-dynamical feedbacks in simulations of stratocumulus and shallow cumulus convection
作者: C. N. Franklin
作者单位: 1CSIRO Marine and Atmospheric Research, Aspendale, Victoria, Australia
2Centre for Australian Weather and Climate Research, a partnership between CSIRO and the Australian Bureau of Meteorology, Aspendale, Victoria, Australia
刊名: Atmospheric Chemistry and Physics, 2014, Vol.14 (13), pp.6557-6570
来源数据库: Copernicus Journal
DOI: 10.5194/acp-14-6557-2014
原始语种摘要: A double moment warm rain scheme that includes the effects of turbulence ondroplet collision rates has been implemented in a large-eddy model toinvestigate the impact of turbulence effects on clouds and precipitation.Simulations of shallow cumulus and stratocumulus show that differentprecipitation-dynamical feedbacks occur in these regimes when the effects ofturbulence are included in the microphysical processes. In both casesinclusion of turbulent microphysics increases precipitation due to a morerapid conversion of cloud water to rain. In the shallow convection case, thegreater water loading in the upper cloud levels reduces the buoyancyproduction of turbulent kinetic energy and the entrainment. Thestratocumulus case on the other hand shows a weak positive precipitationfeedback, with...
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  • stratocumulus 层积云
  • precipitation 沉淀
  • shallow 浅的
  • microphysics 微观物理学
  • cloud 
  • effects 海员自身物品
  • convection 对流
  • turbulence 湍流紊流
  • turbulent 紊聊
  • dynamical 动力学的