A modular and parallelized watershed modeling framework

A modular and parallelized watershed modeling framework
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模块化并行分水岭建模框架

DOI:
10.1016/j.envsoft.2019.104526
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发表时间:
2019-12
影响因子:
4.9
通讯作者:
A-Xing Zhu
A-Xing Zhu
中科院分区:
环境科学与生态学2区
文献类型:
--
作者:
Liangjun Zhu;Junzhi Liu;Cheng-Zhi Qin;A-Xing Zhu

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为了对具有不同流域特征的大面积流域进行长期高分辨率模拟,需要开发一个灵活、可扩展的流域模拟框架,并支持并行计算。本文介绍了一个开源、模块化、并行化的流域建模框架SEIMS(Spatially Explicit Integrated Modeling System)。首先,设计了一种具有标准接口的灵活模块化结构,每个模块对应一个流域子过程的模拟算法。在此基础上,基于改进的两级并行计算方法,构建了一个并行计算中间件,以提高计算效率。使用SEIMS,用户可以添加自己的算法在一个近乎串行编程的方式和构建并行流域模型。SEIMS还支持需要大量模型运行的应用程序的模型级并行计算。通过对中国东南部游屋镇流域的径流模拟,说明了SEIMS的有效性和效率。
It is necessary to develop a flexible and extensible watershed modeling framework with the support of parallel computing to conduct long-term high-resolution simulations over large areas with diverse watershed characteristics. This paper introduced an open-source, modular, and parallelized watershed modeling framework called SEIMS (short for Spatially Explicit Integrated Modeling System) to meet this need. First, a flexible modular structure with standard interfaces was designed, in which each module corresponds to one simulation algorithm for a watershed subprocess. Then, a parallel-computing middleware based on an improved two-level parallel computing approach was constructed to speed up the computational efficiency. With SEIMS, users can add their own algorithms in a nearly serial programming manner and construct parallelized watershed models. SEIMS also supports model level parallel computation for applications which need numerous model runs. The effectiveness and efficiency of SEIMS were illustrated through the simulation of streamflow in the Youwuzhen watershed, Southeastern China.
DOI: 10.1016/j.envsoft.2013.10.005
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