As a member of the meso-scale modelling section in the R&D weather and climate modelling department, I am working on the development of our high-resolution weather and climate flagship Harmonie. Within the international Hirlam consortium, my work focuses on the development of the physical representation of convection, clouds and turbulence. In cooperation with colleagues these efforts resulted in a KNMI turbulence and convection scheme as well as an important modification to the cloud scheme, all accepted for operational use by all Hirlam countries. These physical schemes are essential for the primairy task of Harmonie, warning for extreme conditions. My work on clouds will continue as project leader of the granted MSO (long-term strategic research) project "Cloud Representation, IMprovement and Evaluation in the Harmonie model" (CRIME). Next to development I am working on the verification and evaluation of the Harmonie model.