WeatherFlow RAMS (WRAMS)

The Regional Atmospheric Modeling System (RAMS) is a mesoscale atmospheric computer model originally developed at Colorado State University and updated continuously in the years since it first became operational.  With multiple selectable options for the modeling of specific physical processes (like turbulence, condensation, and scattering), flexible domain and boundary conditions, variable computational techniques, and multiple coordinate systems, RAMS boasts a unique ability to be specifically and precisely tailored for a particular meteorological regime, such as mountainous terrains, a desert region, or the coastal zone.

Taking advantage of this ability to specialize, WeatherFlow runs an operational version of the RAMS, providing high resolution modeling in domains covering most of the coastal United States.  With horizontal resolutions down to 1 km or less and physics packages tailored to the coastal atmosphere, WRAMS provides a powerful tool for direct operational use and incorporation into model ensembles.  By providing WeatherFlow ‘s forecasters and our customers with consistent, high quality, high resolution data, WRAMS allows an unprecedented ability to apply learned behaviors and trend analysis to the forecasting problem, resulting in a better grasp of regional and local influences and improved forecast accuracy.

WRAMS can be initialized with any of the standard synoptic scale models, and several years of operational experience have shown that the synoptic model selection can, in some cases, significantly affect WRAMS’ forecast accuracy.  WeatherFlow is currently working to investigate this pattern more fully and incorporate the results into its forecast processes and systems.