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RISThree-Dimensional Simulation of a Convective Storm: Sensitivity Studies on Subgrid Parameterization and Spatial Resolution
Publisher: American Meteorological Society
Abstract: This article presents the main features of a three-dimensional model for deep convection developed with special care given to the formulation of subgrid turbulent processes. It explicitly simulates the dynamics of turbulent ...
Nonhydrostatic Simulation of Frontogenesis in a Moist Atmosphere. Part II: Moist Potential Vorticity Budget and Wide Rainbands
Publisher: American Meteorological Society
Abstract: The different processes responsible for the occurrence of wide rainbands, as obtained by high-resolution (5-km) nonhydrostatic two-dimensional simulations of frontogenesis induced by shear, with an explicit representation ...
Nonhydrostatic Simulation of Frontogenesis in a Moist Atmosphere. Part I: General Description and Narrow Rainbands
Publisher: American Meteorological Society
Abstract: A series of experiments using a two-dimensional, nonhydrostatic, numerical cloud model with fine horizontal and vertical resolution is performed with the Hoskins-Bretherton solution to the Eady problem as initial condition. ...
A Numerical Study of the Stratiform Region of a Fast-Moving Squall Line. Part I: General Description and Water and Heat Budgets
Publisher: American Meteorological Society
Abstract: A two-dimensional nonhydrostatic cloud model is applied to the simulation of a tropical squall line that occurred on 23 June during the COPT 81 experiment. Owing to the use of an ice parameterization scheme, the simulation ...
African Easterly Waves and Convection. Part I: Linear Simulations
Publisher: American Meteorological Society
Abstract: A linearized version of a nonhydrostatic model is used to study the normal-mode selection and the structure of the African easterly waves in dry and moist environments associated with an idealized African easterly jet ...
A Numerical Study of the Stratiform Region of a Fast-Moving Squall Line. Part II: Relationship between Mass, Pressure, and Momentum Fields
Publisher: American Meteorological Society
Abstract: In a companion paper, a two-dimensional simulation of a fast-moving tropical squall line was successfully compared to observations performed during the COPT81 experiment over West Africa. The full ice phase parameterization ...
Role of Gravity Waves in Triggering Deep Convection during TOGA COARE
Publisher: American Meteorological Society
Abstract: The role of gravity waves in the initiation of convection over oceanic regions during the Tropical Ocean Global Atmosphere Coupled Ocean?Atmosphere Response Experiment (TOGA COARE) experiment is investigated. First, an ...
Modification of Surface Fluxes by Atmospheric Convection in the TOGA COARE Region
Publisher: American Meteorological Society
Abstract: The mesoscale variability of surface heat fluxes induced by atmospheric convection is studied by using 3D cloud explicit simulations and surface observations. Two convective cases observed during the Coupled Ocean?Atmosphere ...
Equatorial Atmospheric Waves and Their Association to Convection
Publisher: American Meteorological Society
Abstract: Equatorial wave systems and their relationships with convective activity are analyzed in the western and central Pacific regions during the Coupled Ocean?Atmosphere Response Experiment (COARE) intensive observation periods. ...
Recovery Processes and Factors Limiting Cloud-Top Height following the Arrival of a Dry Intrusion Observed during TOGA COARE
Publisher: American Meteorological Society
Abstract: This study investigates the recovery of the tropical atmosphere to moist conditions following the arrival of a dry intrusion observed during the Tropical Ocean and Global Atmosphere Program Coupled Ocean?Atmosphere Response ...