Accession Number : ADA136179
Title : Statistics of Vertical Shear from a Hemispheric Model.
Descriptive Note : Technical note (Final),
Corporate Author : NAVAL OCEAN RESEARCH AND DEVELOPMENT ACTIVITY NSTL STATION MS
Personal Author(s) : Harding,J M ; Preller,R H ; Piacsek,S A
PDF Url : ADA136179
Report Date : Sep 1983
Pagination or Media Count : 51
Abstract : Using surface atmospheric momentum and heat fluxes derived from the Fleet Numerical Oceanography Center's weather prediction models, a computation of inertial and Ekman shear was done for the upper 400 m of the North Pacific and North Atlantic. Two 60-day periods were considered in November and December of 1976 and 1980. A capability to predict these types of shear in realtime, or near real-time, is demonstrated using the Navy's TOPS(Thermodynamic Ocean Prediction System) model, A statistical analysis of the vertical shear and associated Richardson number revealed that the time variability of shear appears to be linked primarily to the synoptic time scales of weather events; and the spatial disribution of shear instability (0 or = Ri or = 0.25) and high shear are closely related to the position of atmospheric fronts.
Descriptors : *North Pacific ocean, *North Atlantic ocean, *Shear properties, Statistical analysis, Models, Predictions, Numerical methods and procedures, Variables, Heat flux, Thermal analysis, Thermodynamics
Subject Categories : Physical and Dynamic Oceanography
Distribution Statement : APPROVED FOR PUBLIC RELEASE