On the estimation of overwater buoyancy length from routine measurements
The stability parameter (z/L, where z is the height and L the buoyancy length) is an essential parameter in atmospheric boundary layer studies. From routine measurements, the bulk Richardson number (Rb) is usually computed. On the basis of appropriate field measurements at sea, it is shown that z/L = A Rb where A = 10.2 (with R 2 = 0.97) for unstable and 6.3 (with R 2 = 0.97) for stable conditions, respectively. It is also demonstrated that the proposed simplified equations are in excellent agreement with those more complicated formulations.