The Total Energy -- Mass Flux PBL scheme: Behavior in stable and transitional conditions

The Total Energy – Mass Flux (TEMF) boundary layer scheme has been released in WRF version 3.3. I will present results from the examination of the scheme's behavior for stable, transitional, and cloudy conditions. TEMF displays more “ideal” behavior in stable conditions, and allows for weak intermittent turbulence at night. In the Southern California bight, where stratocumulus clouds were sampled, TEMF allows the correct boundary layer depth to be simulated. Top entrainment in TEMF conforms to expectations. I will also discuss some of the challenges of model comparison and evaluation in real cases, especially the BLLAST case.