Abstract
Sensitivity of boundary layer parameterizations to atmospheric stability preceding heavy rainfall is investigated using the 5th-generation NCAR Mesoscale Model (MM5). Four turbulence parameterizations [MRF, Blackadar, Gayno-Seaman and Eta] and four surface flux schemes [Carlson-Boland, Garratt, Zilitinkevich and Janjic] are selected for evaluation. The Carlson-Boland surface flux scheme produces deep convection and causes hot and dry boundary layer regardless of the turbulence parameterizations. The combination of the MRF turbulence parameterizations and the Garratt surface flux scheme well reproduce local heavy rainfall which observed at Tokyo on 15 August 2005.
