| 基于时态GIS的古气候动力模拟动态演化的分析与实现 |
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| 引用本文： | 赖格英,于革.基于时态GIS的古气候动力模拟动态演化的分析与实现[J].地球信息科学,2004,6(2):12-16. |
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| 作者姓名： | 赖格英 于革 |
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| 作者单位： | 1. 中国科学院南京地理与湖泊研究所, 南京 210008;
2. 中国科学院研究生院, 北京 100039;
3. 江西师范大学地理与环境学院, 南昌 330027 |
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| 基金项目： | 中国科学院知识创新工程项目(批准号:KZCX1-SW-12，KZCX2-SW-118和KZCX2-108). |
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| 摘 要： | 对古气候研究环节中的动态演化问题进行研究和分析,提出了一种时空索引模型,以解决动态演化过程中的时间和空间的对应关系问题,利用时空索引对象来解决空间对象及其属性描述信息,在时间t的信息查询、显示和叠加。为古气候研究、再现和重建古气候以及模拟古气候环境下的大气环流基本场(包括温度场、降水场、气压场和位势高度场),在两维空间格局上,进行时间维的动态演化分析,提供了一个实用工具,在全球变化和区域响应等可视化方面具有较为广泛的应用前景。
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| 关 键 词： | 时态GIS 科学计算可视化 古气候动力模拟 动态演化 时空索引模型 |
| 收稿时间： | 2003-09-14; |
| 修稿时间： | 2003年9月14日 |
A TGIS-based Study and Realization on the Dynamic Visualization for Palaeoclimate Simulation |
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| LAI Geying,YU Ge.A TGIS-based Study and Realization on the Dynamic Visualization for Palaeoclimate Simulation[J].Geo-information Science,2004,6(2):12-16. |
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| Authors: | LAI Geying YU Ge |
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| Institution: | 1. Nanjing Institute of Geography and Limnology, CAS, Nanjing 210008 China;
2. The Graduate School of the Chinese Academy of Sciences, Beijing 100039 China;
3. Colloge of Geography and Environment, Jiangxi Normal University, Nanchang 330027 China |
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| Abstract: | Palaeoclimate is an important reference frame for the study of changes of modern and future climate. As palaeoclimate research is closely related to global change, it has become an important field of international geoscience. The key point in palaeoclimate research is how to reappear and rebuild palaeoclimate and to simulate the dynamic evolvement process of basic element fields of atmospheric circulation in the form of 3-dimensions (time as a dimension). In this paper, a model of temporal and spacial index (MTSI) is brought forward and an object of temporal and spacial index (OTSI) is created to deal with the corresponding relations of temporal progress and to solve the information query, display and analysis of palaeoclimatic basic factors(including temperature, precipitation, sea level pressure and 1000 hpa potential height) at t time on the dynamic visualization for palaeoclimate simulation. Using the object oriented programming platform, a TGIS-based dynamic visualization simulation of palaeo-climate (TDVSP) is completed and has a good visual effect. After a series of data files of palaeoclimate factors being opened, a video can be created in the TDVSP. In a video, there are two types of image formats(vector and grid) for demonstrating the dynamic change of the fields of palaeoclimatic factors, and the features of vector in image(e.g. isoline density, line width and line color) can be modified in runtime. In addtion, the two types of image formats at t time can be switched during running for researches to analyse the spacial pattern of the fields of palaeoclimatic factors. Moreover, every frame of a video can be saved as a picture.Therefore, TDVSP is a good tool for palaeoclimatic researchers to analyse, demonstrate and illuminate the results of palaeoclimatic dynamic simulation. |
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| Keywords: | TGIS scientific visualization palaeoclimate simulation dynamic evolvement |
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