Severe Storms Modeling
Since the early 1960's, meteorologists have studied severe storms
with the aid of numerical models. These computer models are
programmed to solve the mathematical equations describing the
flow of air in the atmosphere including the development and
evolution of storms.
These equations describe changes in wind, temperature, pressure,
water vapor amount, cloud water amount, etc. at selected points
in the atmosphere.
For example, a modeler might start solving the equations at
some time T, calculating values at the selected points 10 seconds
later. Using these new values, the solution can be computed
at time T + 20 seconds. This process is often continued for
hours as storms grow and decay within the modeled atmosphere.
Today scientists produce billions of numbers during a single
storm simulation and this continues to increase as computer
power grows. Visualization of this data is used to understand
what these numbers are describing and why some storms are severe
and others are not. In this module some of these visualizations
are used in discussing the behavior of simulated storms and
their relationship to storms seen in nature.
Illustrations and visualizations help explain these powerful
storms which are the most likely to produce strong tornadoes.
Convective line initiation, squall lines, and non-supercell
thunderstorms which produce tornadoes will be discussed
Severe Storm Forecasting
How severe storm modeling has impacted weather forecasting.