A numerical model pertaining to the multiple vortex phenomenon.

A set of atmospheric analysis and prediction models was developed in support of the SEASAT Program existing objective analysis models. These utilize a 125 x 125 polar sterographic grid of the Northern Hemisphere, modified to incorporate and assess the impact of (real or simulated) satellite data in the analysis of a two-day meteorological scenario in January 1979 . Program/procedural changes include: (1) a provision to utilize winds in the sea level pressure and multi-level height analyses; (2) The capability to perform a pre-analysis at two control levels; (3) a greater degree of wind- and mass-field coupling, especially at these controls levels; (4) an improved facility to bogus the analyses based on results of the preanalysis; and (5) a provision to utilize (SIRS) satellite thickness values and cloud motion vectors in the multi-level height analysis. (from authors' abstract)