Creation and Modification of 1/8 degree and 1/16 degree Subtropical Gyre Atlantic Topographies

Abstract

This report describes the development of the 1/16 deg Subtropical Gyre (STG) Atlantic topography used in the Naval Research Laboratory (NRL) Layered Ocean Model (NLOM). This topography is a version of the Earth Topography 5-minute (ETOP05) dataset that has been modified using maps from the National Imagery and Mapping Agency (NIMA), the Times (London) Atlas, and personal contacts. Comparisons are made between the pure ETOP05 dataset and the modified 1/8 deg and 1/16 deg versions of the STG Atlantic topographies. Actual and model coastlines (i.e., the 200-m isobath) from the final topography are more representative of this region, especially in the passages of the Lesser Antilles. Close examination of the coastlines at 1/16 deg resolution highlighted areas at 1/8 deg resolution that needed improvements. These were retrofitted into existing 1/8 deg topographies.

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Document Details

Document Type
Technical Report
Publication Date
May 30, 1997
Accession Number
ADA458630

Entities

People

  • Ashley P. Mcmanus
  • Edward Joseph Metzger
  • Tamara L. Townsend

Organizations

  • United States Naval Research Laboratory

Tags

DTIC Thesaurus Topics

  • Assimilation
  • Atlantic Ocean
  • Boundaries
  • Caribbean Sea
  • Data Sets
  • Geography
  • Gulf Stream
  • Islands
  • Lesser Antilles
  • Military Research
  • Oceanography
  • Oceans
  • Puerto Rico
  • South America
  • Tongue Of The Ocean
  • Topography
  • Virgin Islands

Fields of Study

  • Environmental science

Readers

  • Oceanography.