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 STENNIS SPACE CENTER MS

Personal Author(s) : Harding, J M ; Preller, R H ; Piacsek, S A

PDF Url : ADA136179

Report Date : Sep 1983

Pagination or Media Count : 55

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 real-time, 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 distribution of shear instability (0 or = Ri or = 0.25) and high shear are closely related to the position of atmospheric fronts.

Descriptors :   *NORTH ATLANTIC OCEAN, *NORTH PACIFIC OCEAN, *SHEAR PROPERTIES, HEAT FLUX, MODELS, NUMERICAL METHODS AND PROCEDURES, PREDICTIONS, STATISTICAL ANALYSIS, THERMAL ANALYSIS, THERMODYNAMICS, VARIABLES

Subject Categories : Physical and Dynamic Oceanography

Distribution Statement : APPROVED FOR PUBLIC RELEASE