Search results
Results from the WOW.Com Content Network
Atmospheric instability is a condition where the Earth's atmosphere is considered to be unstable and as a result local weather is highly variable through distance and time. [ clarification needed ] [ 1 ] Atmospheric instability encourages vertical motion, which is directly correlated to different types of weather systems and their severity.
In fluid dynamics, hydrodynamic stability is the field which analyses the stability and the onset of instability of fluid flows. The study of hydrodynamic stability aims to find out if a given flow is stable or unstable, and if so, how these instabilities will cause the development of turbulence . [ 1 ]
First, the model assumes the atmosphere is composed of fluid obeying quasi-geostrophic motion. Second, the model assumes a constant Coriolis parameter . The model also assumes a constant static stability parameter and that fluctuations in the density of the air are small (obeys the Boussinesq approximation ).
Atmospheric instability; Atmospheric stratification, the dividing of the upper reaches of the Earth's atmosphere into stably-stratified layers; Atmospheric circulation, caused by the unstable stratification of the atmosphere; Thermohaline circulation, circulation in the oceans despite stable stratification.
Atmosphere The atmospheric component of the CM2.X models employs a 24-level atmosphere with horizontal resolution of 2° in east–west and 2.5° in north–south directions. This resolution is sufficient to resolve the large mid-latitude cyclones responsible for weather variability.
In atmospheric dynamics, oceanography, asteroseismology and geophysics, the Brunt–Väisälä frequency, or buoyancy frequency, is a measure of the stability of a fluid to vertical displacements such as those caused by convection. More precisely it is the frequency at which a vertically displaced parcel will oscillate within a statically ...
Alongside pollutant source and terrain information, these models require data about the state of the fluid flow in the atmosphere to determine its transport and diffusion. [9] Within air quality models, parameterizations take into account atmospheric emissions from multiple relatively tiny sources (e.g. roads, fields, factories) within specific ...
Fluid instabilities occur in liquids, gases and plasmas, and are often characterized by the shape that form; they are studied in fluid dynamics and magnetohydrodynamics. Fluid instabilities include: Ballooning instability (some analogy to the Rayleigh–Taylor instability); found in the magnetosphere; Atmospheric instability