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Convective Precipitation

Considerations regarding model convective precipitation

In the current configuration of the convection scheme any showers that are developed are considered to remain within the model grid box column, with precipitation, of whatever type, always falling vertically downwards. These and other aspects have consequences when forecasting shower activity.

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Note: ECMWF output consists of the most unstable convective available potential energy (MUCAPE) and the associated convective inhibition to release this (MUCIN) and ancillary derived products (MUCAPE-shear). 

Additional Sources of Information

(Note: In older material there may be references to issues that have subsequently been addressed)

• See the impact of Cycle 47R3 on representation of rainfall.
• See the impact of Cycle 47R3 on representation of tropical convective rainfall.
• Read more on the Convective Scheme in the Atmospheric Physics page (scroll down to the subsection: Convection). 
• Read more on the Convective Scheme (Quasi-Equilibrium and Non-Equilibrium Convection) in Breakthrough in Forecasting Convection.
• Read more on Atmospheric Moist Convection.

• Read more about the EFI parameters for Severe Convection.

• Read more on Early Warnings of Severe Convection using the ECMWF Extreme Forecast Index.
• Further information is available on derivation of CAPE and Most Unstable CAPE (MUCAPE).

(FUG Associated with Cy49r1)