Accession Number:

ADA158999

Title:

The Equilibrium Mixed Layer Depth in the Tropical Atlantic. The Rotation Stress and Penetration of Radiation Effects.

Descriptive Note:

Master's thesis,

Corporate Author:

NAVAL POSTGRADUATE SCHOOL MONTEREY CA

Personal Author(s):

Report Date:

1985-06-01

Pagination or Media Count:

77.0

Abstract:

This thesis examines the effects of the rotation stress mechanism and the penetration of shortwave radiation below the sea - surface in determining a one dimensional equilibrium mixed layer depth. Starting with the Obukhov-scale equilibrium theory for the surface ocean boundary layer, a revised equilibrium theory, which includes rotation stress and radiation effects, is presented. This new theory is applied using climatological boundary conditions for the tropical Atlantic Ocean and the results are compared with the observed climatological mixed layer depth. In general, the response of the revised model is an improvement over the Obukhov theory alone. Because the quality of the results is limited by uncertainties in the boundary conditions, no detailed evaluation of the model response is justifiable. However, it is concluded here that the physical mechanisms of rotation stress and penetration of radiation are important in determining a steady-state equilibrium depth of mixing for the tropical Atlantic. Keywords Planetary boundary layer Oceanic mixed layer Air water interactions Computer programs and Turbulent kinetic energy budgets.

Subject Categories:

  • Physical and Dynamic Oceanography

Distribution Statement:

APPROVED FOR PUBLIC RELEASE