Micrometeorologists have traditionally used the framework of the ensem
ble mean, fluctuating decomposition in studying turbulence spectra, Re
ynolds-flux budgets, surface-exchange relations, and the universal fun
ctions of Monin-Obukhov similarity within the ''constant-flux'' layer.
More recently, the growth in supercomputers and computational fluid d
ynamics has stimulated micrometeorological applications of large-eddy
simulation (LES). LES uses a different framework, one based on the res
olvable, subgrid-scale decomposition. This framework shift seems to ha
ve weakened the vital and historically strong coupling between experim
ental and computational work in micrometeorology. A challenge for expe
rimentalists today is to address problems posed in the language of the
resolvable, subgrid-scale decomposition. We illustrate by discussing
measurement strategies for resolvable-scale turbulence fields and for
local surface-exchange coefficients.