On the use of discrete adjoints in goal error estimation for shallow water equations
On the use of discrete adjoints in goal error estimation for shallow water equations
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DOI：
10.1016/j.procs.2010.04.013
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发表时间：
2010-05
期刊：
影响因子：
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通讯作者：
F. Rauser;J. Riehme;K. Leppkes;P. Korn;U. Naumann
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文献类型：
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作者：
F. Rauser;J. Riehme;K. Leppkes;P. Korn;U. Naumann
面向目标的双权误差估计已经在计算流体动力学的背景下使用了几年。适应这种方法的地球物理模型是本文的主题。一个差分启用原型的NAG Fortran编译器是用来生成这样的地球物理模型的离散伴随版本，并允许计算所需的目标灵敏度。本文给出了一个二十面体非静力环流模式（ICON）浅水区的数值结果。一个特殊的处理基础的线性求解器进行了讨论，从而提高了这种方法的可扩展性和显着减少内存消耗和运行时间。
Goal oriented dual weight error estimation has been used in context of computational fluid dynamics for several years. The adaptation of this method to geophysical models is the subject of this paper. A differentiation-enabled prototype of the NAG Fortran compiler is used to generate a discrete adjoint version of such a geophysical model and allows to compute the required goal sensitivities. Numerical results are presented for a shallow water configuration of the Icosahedral Non-hydrostatic General Circulation Model (ICON). A special treatment of the underlying linear solver is discussed yielding improved scalability of this approach and a significant reduction in memory consumption and runtime.