This work has like objective to do a comparison between four different methods of estimate of the Convective Boundary Layer (CBL) height, utilizing data obtained by the SODAR and radiossound, during the DRY - to - WET campaign of the RaCCI - LBA experiment in Rondonia, (2002). The four methods of estimate utilized were: the Parcel Method; the Richardson Number Method; the Profiles Method; and a direct measurement method by SODAR. The results showed that the Parcel Method overestimated the heights of the CBL (15% at 08:00 LT and 14:00 LT, and 30% to the other hours), in most of cases analyzed, obtaining a short determination index (r²), when compared with the others methods. The Richardson Number Method and the Profiles Method presented very similar heights, with average differences less than 50 m, achieving a r² value about 0,97, during the beginning of the rainy station. The SODAR data was not adequate at the first hours of the morning, showing that the equipment takes the Residual Boundary Layer (from the previous day) and not the shallow Convective Boundary Layer, in development.
Richardson Number; temperature and moisture profile; SODAR
