A case modeling of sea-land breeze in Macao and its neighborhood

PSU / NCAR MM5 was utilized to simulate the sea-land breeze circulation in Macao and the three-dimensional flow around the Pearl River estuary. Four t wo-way nested grids having resolution of 1, 3, 9, and 27 km were included i n the simulation. It was initialized with conventional observational data, and a 30 h simulation and analysis of one sea-land breeze case were perform ed. It was shown, that the model with a finer resolution (1 km) captures th e sea breeze and land breeze in Macao with reasonable skill. The sea breeze front and the thermal internal boundary layer (TIBL) were also obviously r evealed. However, the coarser horizontal resolution (3 km) could capture th e sea breeze but not the land breeze.