Journal of the atmospheric sciences, 2003, Vol.60 (1), p.34-56
2003
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Details
- Autor(en) / Beteiligte
- Titel
- A shallow-convection parameterization for mesoscale models. Part I: Submodel description and preliminary applications
- Ist Teil von
- Journal of the atmospheric sciences, 2003, Vol.60 (1), p.34-56
- Ort / Verlag
- Boston, MA: American Meteorological Society
- Erscheinungsjahr
- 2003
- Quelle
- EZB Electronic Journals Library
- Beschreibungen/Notizen
- A shallow-convection parameterization suitable for both marine and continental regimes is developed for use in mesoscale models. The scheme is closely associated with boundary layer turbulence processes and can transition to either a deep-convection scheme in conditionally unstable environments or to an explicit (resolved scale) moisture scheme in moist stable environments. The shallow-convection mass-closure assumption uses a hybrid formulation based on boundary layer turbulent kinetic energy (TKE) and convective available potential energy (CAPE), while the convective trigger is primarily a function of boundary layer TKE. Secondary subgrid clouds having nearly neutral buoyancy can form as shallow-convective updrafts detrain mass to their environment. Called neutrally buoyant clouds (NBCs), these can be dissipated through lateral and vertical mixing, light precipitation, ice-crystal settling, and cloud-top entrainment instability (CTEI).
- Sprache
- Englisch
- Identifikatoren
- ISSN: 0022-4928eISSN: 1520-0469DOI: 10.1175/1520-0469(2003)060<0034:ascpfm>2.0.co;2Titel-ID: cdi_proquest_miscellaneous_743444265
- Format
- –
- Schlagworte
- Atmospheric models, Atmospheric radiation, Atmospheric research, Boundary layer transition, Boundary layer turbulence, Boundary layers, Clouds, Convection, Convective available potential energy, Downward long wave radiation, Earth, ocean, space, Entrainment, Exact sciences and technology, External geophysics, General circulation models, Kinetic energy, Lateral stability, Mesoscale models, Mesoscale phenomena, Meteorology, Moisture, Moisture effects, Parameterization, Potential energy, Precipitation, Radiation, Rain, Turbulence, Turbulent boundary layer, Turbulent kinetic energy, Updraft, Vertical mixing, Water in the atmosphere (humidity, clouds, evaporation, precipitation)