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Precipitation Efficiency[edit]

Effects such as re-evaporating rain and local atmospheric moistening result in the precipitation rate not being directly proportional to the condensation rate. Therefore precipitation efficiency is a complex characteristic of a convective system. It has an impact on cloud paremetrisation, the forecasting of heavy rainfall and flash floods, and the climate feedback of clouds.^[1]

Concept[edit]

Precipitation efficiency is defined to evaluate how efficiently the convective system produces precipitation. The precipitation efficiency of convection is a measure of how much of the water that condenses in a rising column of air reaches the surface as precipitation. ^[2]

Role in Cloud parametrisation[edit]

Impact on climate/cloud feedbacks[edit]

^ [Sui, C., X. Li, and M. Yang, 2007: On the Definition of Precipitation Efficiency. J. Atmos. Sci., 64, 4506–4513, https://doi.org/10.1175/2007JAS2332.1.]
^ [Lutsko, N. J. & Cronin, T. W. (2018). Increase in precipitation efficiency with surface warming in radiative-convective equilibrium. Journal of Advances in Modeling Earth Systems, 10, 2992–3010. https://doi.org/10.1029/2018MS001482]

[1] [Sui, C., X. Li, and M. Yang, 2007: On the Definition of Precipitation Efficiency. J. Atmos. Sci., 64, 4506–4513, https://doi.org/10.1175/2007JAS2332.1.]

[2] [Lutsko, N. J. & Cronin, T. W. (2018). Increase in precipitation efficiency with surface warming in radiative-convective equilibrium. Journal of Advances in Modeling Earth Systems, 10, 2992–3010. https://doi.org/10.1029/2018MS001482]

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