【作者】 姚丽萍；

【导师】 王远飞；

【作者基本信息】 华东师范大学 ， 地图学与地理信息系统， 2006， 硕士

【摘要】 大气污染扩散模拟是环境管理部门进行环境空气质量评价、大气环境容量核定、优化污染源的布局、空气质量预报等业务工作的有效手段与方法。随着城市工业化进程的加快，排入城市空气中的大气污染物种类及数量不断增多，研究城市环境空气质量的大气扩散模式不断向大型化、复杂化发展，有效的提高扩散模型计算效率，并实现扩散结果准确、直观地反映城市空气质量状况以及各级部门的信息共享，是各级环境管理部门共同关心的问题。本论文就是以解决环境管理和决策中的实际问题为出发点，立足于互联网、高性能并行计算、GIS等前沿技术，对互联网环境中的污染扩散模型、高性能并行计算、GIS的系统集成进行了探索性研究。 论文共分五章。第一章阐述了研究的背景和意义，回顾了国内外高性能并行计算的研究现状以及GIS在环境模型中的应用状况，提出了本文研究的主要问题和内容。第二章对高性能并行处理技术的技术体系和发展、大气扩散模型及其与GIS结合的必要性、集成方式以及应用等进行了深入的分析探讨。第三章在并行算法的构造原则、设计方法以及性能评价的基础上，提出并实现了高性能计算环境中大气污染扩散模式的并行化处理方案，并在两种不同的高性能平台上对多个试验方案进行了性能比较与分析。第四章是本文的重点，主要研究了GIS、污染扩散模型、高性能计算等多技术体系的综合集成技术，开发了可满足环境管理需求的系统原型。首先介绍了基于GIS的大气污染扩散可视化系统的设计思路及开发方案；然后在此基础上论述了污染扩散模型、并行计算与GIS集成系统的总体设计、开发环境以及功能实现等。第五章总结论文，并指出了需要深入研究的问题和方向。 通过上述工作，作者在高性能计算平台上实现了大气扩散模型的并行化；在Internet上实现了以GIS平台为操作环境的计算任务提交、高性能计算任务调度监控以及结果回传：探索了GIS-污染扩散模型-高性能计算-Internet等多种技术体系的应用系统集成。实践表明，对于海量数据处理、大规模地理计算等任务，网络环境下的GIS-高性能计算的集成是一颇有价值的技术途径。更多还原

【Abstract】 Simulating the dispersion of atmospheric pollutant is the effective measures or method for department of environment administration to evaluate the quality of environment air, check and ratify the capacity of atmosphere environment, optimize the position of pollute spot, and so on. With quickening urban industrialization, the sorts and amounts of atmospheric pollutant exhausted into urban air are increasing, Atmospheric dispersion model is getting more and more large, complicated. Those are concerns for departments of environment administration that improving operation efficiency of dispersion model effectively, reflecting status of air quality truly and obviously by the model result and sharing the result. Started from solving the practical problems in environmental management and decision-making, established in the Internet, high performance parallel computation, GIS and other advanced techniques, the paper makes exploratory research on system integration pollutant dispersion model, high performance parallel computing and GIS in the environment of Internet.The paper is consist of five chapters. Chapter 1 sets forth the background and significance, the related research in the high performance parallel computation and GIS applied to environmental models, provides the work in this paper. Chapter 2 analyzes and discusses deeply system and progress of parallel processing technology, atmospheric pollutant dispersion model, necessity, approach and application fields of integrating GIS with the environment model. Chapter 3 based on construction principles, design methods and performance evaluation of parallel algorithm, proposes and realizes the high performance parallel pollutant dispersion model, analyzes several testing results on two high performance computers. Chapter 4 studies mainly techniques of integration GIS, atmospheric pollutant dispersion model with high performance computing and develops system prototype to meet environmental management needs, introduces firstly design and project of visualization system of atmospheric pollutant dispersion based on GIS, then discusses the general design, development environment and function of this integrated system by the atmospheric dispersion model, parallel computation and GIS. The last chapter concludes the research and proposes the future research directions and problems.In this paper, a high performance parallel pollutant dispersion model is更多还原