The relationship between the turbulence parameters and the boundary layer height over Baghdad city Al - Mustansiriya Suburbs

This study trying to identify the boundary layer height for different times of day by collecting and analyzing the depth of boundary layer over Baghdad city using the European Centre for Medium-Range Weather Forecasts (ECMWF) data from (1-31 JULAY 2016). and the wind speed with its three components (u, v, w ) using fast response anemometer. This study suggested that the increasing in boundary layer height (BLH) depends on the large change in temperature (T), this change appears during the unstable conditions (almost in daytime) the proportional between BLH and T indicate a good value of correlation coefficient about (0.6 to 0.8). either during a stable conditions (often occurring during the night ) the relationship is negative proportional and with an moderate value of correlation coefficient R about (-0.3 to -0.6 ). This work suggested that a moderate proportional between Horizontal momentum flux (MF), Turbulent Kinetic Energy (TKE) and boundary layer height (BLH) with correlation coefficient about (0.5 to 0.6).