Creation and Modification of 1/8 degree and 1/16 degree Subtropical Gyre Atlantic Topographies
NAVAL RESEARCH LAB STENNIS SPACE CENTER MS OCEANOGRAPHY DIV
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This report describes the development of the 116 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 18 deg and 116 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 116 deg resolution highlighted areas at 18 deg resolution that needed improvements. These were retrofitted into existing 18 deg topographies.
- Physical and Dynamic Oceanography
- Geology, Geochemistry and Mineralogy