A study on atmospheric boundary-layer characteristics at Anand, India using LSP experimental data sets

An attempt is made to study the planetary boundary layer (PBL) characterist ics during the winter period at Anand (22.4 degrees N, 72.6 degrees E), a s emi-arid region, which is located in the western part of India. A one-dimen sional turbulent kinetic energy (TKE) closure model is used for the study. The structure of the PBL, which consists of profiles of zonal and meridiona l components of wind, potential temperature and specific humidity, is simul ated. A one-dimensional soil heat and moisture transport parameterization s cheme is incorporated for the accurate representation of the energy exchang e processes at the soil-atmosphere interface. The diurnal variation of flux es of sensible heat, latent heat, shortwave radiation, net radiation and so il flux, soil temperature at different depths, Richardson number and TKE at the height of the constant flux layer is studied. The model predictions ar e compared with the available observations obtained from a special Land Sur face Processes (LSP) experiment.