해양 및 대기 순환 수치모델에 사용하는 연직 좌표계에 대한 고찰
A Review on the Vertical Coordinate Systems used in Oceanic and Atmospheric Circulation Numerical Model
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참고문헌
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초록
순환 모델 연구를 위한 수치 방법에서는, 증가하는 온실가스 배출에 대한 해양과 대기의 물리적 반응을모의하기 위해 다양한 연직 좌표계를 사용한다. 본 연구에서는 해양 및 대기 순환 수치모델에 자주 사용하는 4종류의 연직좌표계, 즉 고도, 일반, 압력, 그리고 무차원 연직좌표계에 대하여 소개한다. 최종적으로, 연직좌표계로 표현된 정수압 방정식, 연직속도, 수평방향 운동방정식, 그리고 연속방정식을 도입하고, 연직좌표계에 대한 장단점을 정리하여, 수치모형 개발 정확성을 도모하였다.
Abstract
In a numerical method for the study of the circulation model, various vertical coordinate systems are used to simulate the physical response of the ocean and atmosphere to the increasing greenhouse gas emission. In this study, four types of vertical coordinate systems frequently used in oceanic and atmospheric circulation nu merical models, i.e., height, general, pressure, and normalized vertical coordinate systems, respectively are intro duced. Finally, the hydrostatic pressure equation, vertical velocity, equation of horizontal motion, and continuity equation expressed in a vertical coordinate system were introduced, and the pros and cons of the vertical coordi nate system were summarized to promote the accuracy of numerical model development.
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