A computational framework for simulation of biogeochemical tracers in the ocean
A computational framework for simulation of biogeochemical tracers in the ocean
复制标题
海洋生物地球化学示踪剂模拟的计算框架
DOI：
--
复制
发表时间：
2007
期刊：
影响因子：
--
通讯作者：
S. Khatiwala
中科院分区：
文献类型：
--
作者：
S. Khatiwala
介绍了一种用于在海洋模型中有效模拟化学和生物示踪剂的新的计算框架。该框架基于“传输矩阵”公式，这是一种将大气环流模式(GCM)中复杂的三维示踪剂传输捕获为稀疏矩阵的方案，从而将示踪剂的模拟任务减少为一系列简单的矩阵-矢量积。这种配方的主要优点是高效和方便。它比GCM的效率高出许多数量级，使我们能够解决目前GCM难以或负担不起的问题。该方案还允许我们快速地对新的生物地球化学参数进行“原型”或“插入”现有的参数。本文介绍了传输矩阵法的主要特点和优点，并举例说明了它在化学和生物海洋学中的一系列实际问题中的应用。这些例子从瞬变示踪剂(SF6)的模拟到复杂耦合生物地球化学模型的伴随敏感性。最后，本文描述了该计算方案的一个高效、便携和可自由使用的实现，它为模拟任何生物地球化学示踪剂提供了必要的框架。
A novel computational framework is introduced for the efficient simulation of chemical and biological tracers in ocean models. The framework is based on the “transport matrix” formulation, a scheme for capturing the complex three‐dimensional transport of tracers in a general circulation model (GCM) as a sparse matrix, thus reducing the task of simulating tracers to a sequence of simple matrix‐vector products. The principal advantages of this formulation are efficiency and convenience. It is many orders of magnitude more efficient than GCMs, allowing us to address problems that are currently either difficult or unaffordable with GCMs. The scheme also allows us to quickly “prototype” new biogeochemical parameterizations or “plug in” existing ones. This paper describes the key features and advantages of the transport matrix method, and illustrates its application to a series of realistic problems in chemical and biological oceanography. The examples range from simulation of a transient tracer (SF6) to adjoint sensitivity of a complex coupled biogeochemical model. Finally, the paper describes an efficient, portable, and freely available implementation of this computational scheme that provides the necessary framework for simulating any biogeochemical tracer.