The evoluation of low-level flow upstream of the Continental Divide (Rocky Mountains) from being blocked, i.e. unable to surmount the barrier, to becoming unblocked and blocked again is studied observationally and numerically.

The development of a mesoscale circulation by the thermal contrast between a fire burned area surrounded by untouched vegetation was simulated by the Regional Atmospheric Modeling System (RAMS) in order to show the circulation's ability to generate clouds and precipitation.

Recent observational studies of upper-tropospheric and lower-stratospheric winds atop mesoscale convective systems show the development of anticyclonic outflow....As the magnitude of the anticyclone increases, the inertial stability of the system is reduced, resulting in a decreased partitioning of the initial available potential energy to the balanced state of the system.

VHF wind profiler data were used to study the vertical draft structure within 13 tropical Mesoscale Convective Systems (MCSs) near Darwin, Australia during the wet season of 1989-1990 and 1990-1991.

Animations of Next Generation Radar reflectivity images are used to analyze the evolution of convective and stratiform regions of 13 mesoscale convective systems.

In this study, the RAMS@CSU cloud-resolving mesoscale forecast model is run in a real-time configuration with a sophisticated microphysical package and multiple nested grids, in which the smallest grid has increased vertical resolution in the lower boundary layer. Using this configuration, two specific fog events are simulated in 3-D using initialization data with a horizontal resolution of 40 km.