a medium-range (3-7 day) numerical weather prediction model operated by the United Kingdom Meteorological Agency. It has a resolution of 75 kilometers and covers the entire northern hemisphere. Forecasters use this model, along with the ECMWF and GFS, in making their extended forecasts (3 days and longer).
a nonprofit, Colorado-based corporation that receives and manages funds and administrative functions for NCAR. It includes several universities that are dedicated to the advancement of atmospheric and related sciences
a colloquial term used to describe conditions in the atmosphere favorable to the creation of precipitation. This term typically is associated with the passage of surface or upper level low pressure systems, fronts, or other phenomenon where precipitation is expected.
generally, air that will continue to rise and accelerate when briefly forced upward
unstable; see Unstable Air
a relatively small-scale current of air with marked upward motion
air that flows toward higher terrain and, hence, is forced to rise
upslope; see Upslope Flow
toward the source of the flow, or located in the area from which the flow is coming
upward vertical motion; see Upward Vertical Velocity
upper level winds