Hydrostatic and Nonhydrostatic Nested Modeling of Straits in the Philippines Archipelago
Abstract
This study utilizes nested nonhydrostatic models embedded in hydrostatic models to simulate and predict the submesoscale dynamics of straits at high spatial and temporal resolutions. The goal of this work is to understand the submesoscale dynamics of straits and the impact of these dynamics on the throughflow in the straits. The Navy requires the ability to forecast features and circulations forced by these dynamics on scales that impact naval operations. The primary objective of the study is to understand the submesoscale dynamics in straits using nested nonhydrostatic models embedded in hydrostatic models. The authors will work to understand the effects and interactions of the primary forcing components: tides, especially the spring-neap tidal cycle and remotely versus locally generated tides; large-scale circulation, particularly the Pacific to Indian ocean throughflow and its seasonal variability; and winds, especially the Southeast Asian monsoon cycle. The other objectives of the study are as follows: to establish the resolution and aspect ratio required to accurately simulate submesoscale physics and structures; to determine the importance of accurate and detailed representation of topography and forcing, especially at open boundaries; to understand the impact of rotation on the flow in straits; to explore the impact of data assimilation in a nonhydrostatic model, especially for sparse and irregular data; and to compare model and field observations both for planning and for assessment.
Document Details
- Document Type
- Technical Report
- Publication Date
- Jan 01, 2009
- Accession Number
- ADA527203
Entities
People
- Patrick C. Gallacher
Organizations
- United States Naval Research Laboratory