Accession Number:

ADA230001

Title:

Results from the NW Atlantic Regional Energetics Experiment (REX): An Overview

Descriptive Note:

Abstract

Corporate Author:

NAVAL OCEANOGRAPHIC AND ATMOSPHERIC RESEARCH LAB STENNIS SPACE CENTER MS

Report Date:

1990-01-01

Pagination or Media Count:

1.0

Abstract:

The REX Project, which is nearing completion, has arrived at several fundamental conclusions regarding the dynamics and energetics of the Gulf Stream. These results have been possible through the complementary use of satellite altimetry from the U.S. Navys GEOSAT-EXACT Repeat Mission GEOSAT-ERM, numerical ocean model studies, and a field effort involving in situ measurements along the Gulf Stream path. Chief among these are results indicating that 1 Mesoscale variability of the Gulf Stream is a maximum along a corridor from just west of the New England Seamount Chain NESC, eastward over the deep Sohm Abyssal Plain, and ending at the Newfoundland Ridge 2 A two-gyre structure is exhibited in the recirculation of the annual mean Gulf Stream, apparently due to the presence of the NESC 3 Monitoring of the mean and eddy energy budget of the Gulf Stream both available potential and kinetic with GEOSAT-ERM altimetry and model simulations has both verified and expanded historical notions of Gulf Stream energetics estimated from compilations of years of in situ measurements 4 The critical importance of the North Atlantics Deep Western Boundary Current DWBC in governing the separation and eastward penetration of the Gulf Stream has been identified by comparisons of numerical simulations with satellite and in situ observations 5 The relatively simple vertical structure of ocean density in the NW Atlantic allows for conversion of satellite surface observations such as surface topography observed with an altimeter into inferred vertical profiles of temperature, salinity, or soundspeed. On this basis, a realistic ocean forecast system for the Gulf Stream will soon be operational within the U.S. Navy as a REX spinoff.

Subject Categories:

  • Physical and Dynamic Oceanography

Distribution Statement:

APPROVED FOR PUBLIC RELEASE