Open AccessThe Effect of Lateral Boundary Conditions on Results of One-Way Nested Ocean Regional Circulation Model
Author(s) -
Van Sy Pham,
Jin Hwan Hwang
Publication year - 2018
Publication title -
epic series in engineering
Language(s) - English
Resource type - Conference proceedings
ISSN - 2516-2330
DOI - 10.29007/qd69
Subject(s) - downscaling , circulation (fluid dynamics) , boundary (topology) , ocean current , geology , boundary value problem , nested set model , geodesy , computer science , climatology , mathematics , mechanics , oceanography , physics , mathematical analysis , climate change , database , relational database
This research evaluated two main sources of impact on the results of the ocean regional circulation model (ORCMs) during downscaling and nesting the results from the ocean global circulation model (OGCMs). Representative two sources should be the spatial resolution difference between driving and driven data, and the frequency for up- dating LBCs. The Big-Brother method investigated the effect of them on the results of the ORCMs separately. The results showed that the lateral boundary conditions (LBCs) potentially degraded the results of ORCMs. The errors developed at the boundaries propagate slowly into the center of the nested domain as time passes. The simulation results of the ORCMs significantly depend not only on spatial resolution but also on the frequency for updating the lateral boundary conditions. The ratio resolution of spatial resolution between driving data and driven model can be up to 3 and the updating frequency of the LBCs can be up to every 6 hours per day.