Abstract
Under the provision of a time series of radiosonde and surface marine observations conducted by three research vessels, an investigation was made on the behaviour of the stability terms in heat and moisture transfer relations (similarity functions C and D for heat and moisture, respectively) for the convective condition of the planetary boundary layer.
Similarity functions were analysed in terms of stratification parameterμi it is found that the magnitude of C and its distribution versus μi came out comparable with what other workers obtained and that the values of D are generally smaller than those of C for the entire range of μi which might be due to the existing baroclinicity in the AMTEX area.
It is also revealed that the value of C decreases and that of D increases as the baroclinicity weakens, suggesting that the values of C and D become close one another in the limit of decreasing baroclinicity. Distributions of C and D versus μi are given by logarithmic expressions.
The dependence upon μi the ratio of the height of PBL height zi and the neutral height scale λ was obtained. For the stronger instability region zi/λ∞(-μi)0.46. For the near neutral region zi would be linearly related to λ, accordingly to u*/_??_ with proportionality 0.15.
