Amending the W* Velocity Scale for Surface Layer, Entrainment Zone, and Baroclinic Shear in Mixed Forced/Free Turbulent Convection
Final rept. Oct 1990-Sep 1991,
NAVAL POSTGRADUATE SCHOOL MONTEREY CA DEPT OF PHYSICS
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We amend the free convective mixed layer velocity scale, w to ws to include mechanical turbulence from forced convection. Ws has discrete surface layer, entrainment zone, and baroclinic components and requires the length scales zo, L, Delta h, zi, and zb, a newly defined baroclinic length. To close the system we offer simple models for delta h, the entrainment zone depth. The delta h models show realistic diurnal hysteresis, using a critical bulk Richardson number which exceeds unity.