  A recently developed so-called explicit algebraic Reynolds-stress (EARS)
model is applied to a transitioning atmospheric boundary layer (ABL). The
simulation describes a diurnal cycle with a deep convective ABL during daytime
and an extremely thin and stably stratified ABL during nighttime. The
predictions of the EARS model are compared to large-eddy simulations (LES) of
Couvreux \emph{et al.}~ (Bound Layer Meteorol 176:369-400, 2020). The model
simulation is extended in time in order to study several consecutive diurnal
cycles. The EARS model uses the same parametrization and model coefficients for
stable and convective ABL and is applicable over a wide range of thermal
stratifications. First-order statistics are shown to be well predicted by the
model. We also show that the model can predict transitional effects such as
residual turbulence as well as horizontal turbulent fluxes, which are an
inherent part of the EARS model solution.
