Development of applied mathematics teaching materials using earth environmental issues

我们看到许多与地球环境科学有关的有趣的科学研究。最重要的是，大气中二氧化碳含量增加引起的全球变暖是一个全球性的问题。然而，很少有研究讨论或检验它们之间关系的定量表达。多年来，我们一直将地球环境科学作为科学或应用数学教育的教材。在三年的科学研究过程中：(1)利用系统动力学软件IThink建立了CO_2循环的计算机模型。我们使用了IPCC采用的数值。该模型在一台小型计算机上运行，具有改变参数方便、直观掌握整个连接的特点。我们采用了Box模型来定量表达碳储量、碳储量之间的年迁移量及其迁移量。该模型使我们能够模拟年碳运动。(2)针对离散傅立叶变换的应用，编写了相应的教材。其中包括使用图形计算器进行语音分析。我们在ICME第10届(2004年)上作了介绍，并为“科学伙伴计划”的培训班(2004年8月在东京，2004年12月在福井)做了演讲。(3)我们选择了与全球变暖有关的出版物中的教学材料，主要来自气候系统建模(Kevin E.Trenberthe，1992)。该模型(参考文献(1))是我们对其进行研究的结果。我们关注的是地球上的二氧化碳循环。还有更多的东西需要研究和讨论。

We see many interesting scientific studies concerned with earth environment science. Above all, global warming caused by the increase of the atmospheric C02 is a global issue. Few studies, however, have discussed or examined the quantitative expression of the relation between them. We have used earth environment science as a teaching material for science or applied math education for some years. During the three years of scientific study on it : (1) We created a computer model of C02 circulation using "iThink," or a system dynamic software. We used the numerical values adopted by IPCC. This model runs on a small computer and features easiness in changing parameters and in grasping the whole connection at sight. We employed a Box model that expresses quantitatively carbon storage, annual moving quantity between the storage units and its mobility. The model enables us to simulate the annual carbon movement. (2) We developed some teaching materials aimed at utilization of Discrete Fourier Transformation. Among them is voice analysis with a graphing calculator. We gave a presentation on it at ICME 10 (2004), and a lecture for a training course of "Science Partnership Program" (August, 2004 in Tokyo, December, 2004 in Fukui). (3) We chose teaching/ learning materials from publications related to global warming, and mainly from Climate System Modeling (Kevin E. Trenberthe, 1992). The model (Refer (1)) is a result of our study on it. We have focused on carbon dioxide circulation on earth. There is much more left for research and discussion.