This research revealed the need for more studies regarding domain size and design within models. In our case, precipitation was significantly different in the larger (400x400 grid point) domain than the smaller (175x175 grid point) domain. The smaller domain produced precipitation closer to observations.
Future simulations should employ Sridhar et al. (2011) irrigation schemes within the newly released NOAH Multi-Parameterization model (NOAH-MP) and examine irrigation and snow characteristics over Idaho. The new model was not released at the time of this experiment.
Future studies should also investigate other PBL schemes available in WRF over Southern Idaho; each one mixes the atmosphere differently. Furthermore, future studies should investigate other microphysical schemes available in WRF, because each scheme is significantly different in the way it calculates cloud processes, cloud physics, rain, snow, graupel, and other factors associated with cloud and precipitation physics.
The surface layer between the LSM and the PBL needs to be improved because the Monin-Obukhov Similarity Theory must have turbulence. Since turbulence can’t go to zero in these models, they cannot predict nighttime temperatures because they only predict the ambient stable boundary layer conditions and don’t parameterize the capping layer inversion, and more importantly, the layer beneath this capping layer inversion
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when it occurs. Therefore wintertime inversions, which are common to the study area, are misrepresented.
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