Surface renewal model
From Glossary of Meteorology
surface renewal model
A turbulent exchange model that assumes that fluid near a surface is intermittently replaced by well-mixed fluid from adjacent layers, thereby disrupting the viscous sublayer at the surface itself.
Near-surface gradients are assumed to be restored by conduction according to where T is temperature and κ is thermal diffusivity.
Kraus, E. B., and J. A. Businger 1994. Atmosphere–Ocean Interaction. Oxford University Press, . 138–147.