CAJ | 학술논문

大气污染扩散模型数值模拟结果的时空多维可视化表达，能有效展示大气污染扩散空间分布，为快速高效辅助后期污染分析与应急决策提供重要的参考。CALPUFF模型能高效模拟污染物在大气环境中时空变化的扩散过程，而现有大气污染扩散模型模拟结果可视化表达普遍存在不能有效集成地理信息、缺失部分重要维度特征等问题。论文首先分析了CALPUFF模型，及其与组件式GIS紧密集成的技术方案，为模型模拟结果与地理信息集成提供了技术支持。然后，基于CALPUFF模型的数值计算模拟结果，详细研究了风场数据预处理及其矢量绘制方法，浓度场的数据预处理及其栅格渲染方法。在三维地形场景下，探究了大气污染物的时空扩散模拟可视化表达方法，给出了CALPUFF模型模拟结果与三维地形场景的集成表达策略。最后，通过组件式GIS，构建了福州市三维地形场景，以大气污染CALPUFF扩散模拟结果为例，在WPF系统框架下，实现了风场和浓度场的时空动态模拟和空间层级多维可视化表达。实验结果表明，本文所采用的时空可视化技术方案能将CALPUFF模型模拟结果，有效集成三维地形场景，实现模型模拟结果在时间维度上动态扩散和在空间维度上的层级分布，可为大气污染模拟结果的时空多维可视化提供参考。
대기오염확산모형수치모의결과적시공다유가시화표체，능유효전시대기오염확산공간분포，위쾌속고효보조후기오염분석여응급결책제공중요적삼고。CALPUFF모형능고효모의오염물재대기배경중시공변화적확산과정，이현유대기오염확산모형모의결과가시화표체보편존재불능유효집성지리신식、결실부분중요유도특정등문제。논문수선분석료CALPUFF모형，급기여조건식GIS긴밀집성적기술방안，위모형모의결과여지리신식집성제공료기술지지。연후，기우CALPUFF모형적수치계산모의결과，상세연구료풍장수거예처리급기시량회제방법，농도장적수거예처리급기책격선염방법。재삼유지형장경하，탐구료대기오염물적시공확산모의가시화표체방법，급출료CALPUFF모형모의결과여삼유지형장경적집성표체책략。최후，통과조건식GIS，구건료복주시삼유지형장경，이대기오염CALPUFF확산모의결과위례，재WPF계통광가하，실현료풍장화농도장적시공동태모의화공간층급다유가시화표체。실험결과표명，본문소채용적시공가시화기술방안능장CALPUFF모형모의결과，유효집성삼유지형장경，실현모형모의결과재시간유도상동태확산화재공간유도상적층급분포，가위대기오염모의결과적시공다유가시화제공삼고。
The spatio-temporal and multi-dimensional visualization of atmospheric pollution dispersion simula-tion result can effectively demonstrate the spatial distribution of air pollution dispersion, which could provide an important reference to the quick analysis and effective emergency decision-making.The CALPUFF model can ef-fectively simulate the diffusion process of pollution with respect to changes of time and space.The existing visu-al expression methods for atmospheric pollution simulations havesome common deficiencies, such as the ineffec-tive integration of geographic information, the missing of important dimension features, etc. In this paper, the au-thors firstly analyzed both the CALPUFF model and its integration with component GIS, which provides a tech-nical support for the integration of simulation results and geographical information. Secondly, with the support of GIS visualization technology, the preprocessing and vector plotting method for the simulated wind field re-sults from CALPUFF model was given, and the preprocessing and raster rendering method for the simulated den-sity field results from CALPUFF model was also provided. Thirdly, based on the three-dimensional terrain scene, the visualization method for atmospheric pollution dispersion was discussed. The integrated visual expres-sion strategy of the CALPUFF model simulation results and the three-dimensional terrain scenes was then ob-tained. Finally, we took the Fuzhou City as a study area, and the three-dimensional terrain scenes of Fuzhou was constructed using the component GIS. According to the framework of WPF(Windows Presentation Foundation), the spatial and temporal multi-dimensional visualization simulation of wind fields and density fields was imple-mented. The experiment result shows that the spatial and temporal multi-dimensional visualization method given in the paper can be effectively integrated with the three-dimensional terrain scenes, and can also simultaneously achieve the processes of dynamic diffusion within the temporal dimension and multi-level distribution within the spatial dimension for the simulation results. The spatial and temporal multi-dimensional visualizations method can provide a good reference to other studies and applications.