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Aspects of the moist physics package are given below:

FigAFig2.1.5-1: Outline of revisions to the physics within Cycle 47R3 upgrade.  Schematic of the representation of the cloudy convective boundary layer in the IFS, consisting of moist convective mass flux in the moist convection scheme and dry mass flux and turbulent diffusion in the turbulence scheme.  Turbulent diffusion is confined within the dry boundary layer.  However, it is extended to the cloud top of Sc where there is also an additional contribution from radiative cooling and cloud top entrainment. 

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• the mixed layer top is typically:
  • near the inversion top in the clear boundary layer
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  • .
  • near the cloud base for Cu-topped boundary layers
  , and
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  • near the cloud top for Sc‑topped boundary layers. 
• the computed strength of the temperature inversion is used to distinguish between Sc and Cu topped boundary layers.
• entrainment at the top of the mixed layer is proportional to the surface buoyancy flux (20%) for all types of boundary layers.  Additionally for Sc, there is an increased contribution to turbulent mixing from radiatively driven entrainmententrainment driven by radiation effects at the cloud surface.
• all cloud processes are handled by the cloud scheme.

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• Read more on the changes and improvements and the impacts introduced by the Moist Physics package.
• Read more on the impact on model output fields in 47r3 (forecaster oriented document).
• Watch a comprehensive lecture on model physics (30sec delay before video begins).View ECMWF eLearning module on parameterisation of sub-grid processes.