计算机工程与应用 ›› 2015, Vol. 51 ›› Issue (6): 217-221.

• 工程与应用 • 上一篇    下一篇

一种应用于地球系统模式的通用插值算法模型

周宇峰1,张志远1,2,3,刘  利2,杨广文1,2   

  1. 1.清华大学 计算机科学与技术系,北京 100084
    2.清华大学 地球系统科学研究中心 地球系统数值模拟教育部重点实验室,北京 100084
    3.海军海洋水文气象中心,北京 100161
  • 出版日期:2015-03-15 发布日期:2015-03-13

General model of regridding algorithm for earth system modeling

ZHOU Yufeng1, ZHANG Zhiyuan1,2,3, LIU Li2, YANG Guangwen1,2   

  1. 1.Department of Computer Science and Technology, Tsinghua University, Beijing 100084, China
    2.Ministry of Education Key Laboratory for Earth System Modeling, Center for Earth System Science, Tsinghua University, Beijing 100084, China
    3.Hydro-Meteorological Center of Navy, Beijing 100161, China
  • Online:2015-03-15 Published:2015-03-13

摘要: 地球系统模式的现有插值算法误差较大、网格适用性差,无法满足其未来的发展需求。提出了一种插值算法分类方法,根据此方法设计了一个通用插值算法模型。该模型基于复合算法的思想,既可表示现有算法,还可通过选择适当的两个算法灵活构造出局部的高精度的新算法。根据此模型并利用径向基函数良好的插值效果提出了两个新的插值算法。基于球面Voronoi图的搜索算法可有效优化插值算法的实现。实验结果表明新算法具有良好的插值效果。

关键词: 地球系统模式, 插值, 径向基函数

Abstract: The deficiency of current regridding algorithms of earth system model including low accuracy and poor generality leads to difficulty in meeting its development needs of the future. A general regridding algorithm model is proposed based on a classification method. Using associated algorithm idea, the model can not only express current algorithms, but also be used to generate accurate regridding algorithms flexibly. Utilizing this model and advantage of radial basis function, two new regridding algorithms are presented, and optimized by Voronoi-baesed search algorithm. Experimental results show the good performance of the proposed algorithms.

Key words: earth system modeling, regridding, radial basis function