Construction of a Educational Weather Information Network by Telecommunication

在日本，9岁到10岁的学生学习每天的气温随着天气的变化和天气变化的规律。此外，13岁至14岁的人还可以学习日本天气变化和季节变化的机制。构建了气象信息网络，为学校提供气象信息，供学校在课堂上进行预科气象教育。收集了卫星图像、气象要素数据和天气图。通过带有数据调制解调器的电话线提供实时和典型数据。在接入网络后，用户可以在不知道电信协议的情况下将文件服务器视为他或她的计算机上的虚拟驱动器，并从服务器下载数据的文件。下载400K字节的红外卫星图像需要80到120秒。还可以根据用户的要求通过CD-ROM提供大量数据。开发了一个软件包，允许远程用户将卫星图像用作教学材料。设计该软件的基本目的是让大学预科学生能够自己学习天气。在教室中使用的主要功能如下：1)显示红外图像和日本各地的可见光图像；2)显示地球的红外图像；3)图像动画；4)图像放大；5)指定温度或反射率范围的着色区域；6)将可见图像叠加在红外图像上；7)显示立体图像；8)输出到打印机或图形软件。为大学预科教师举办了一个短期课程，以促进使用我们的网络进行课堂教学。24名教师参加了该课程。

In Japan, students who are 9 going on 10 years old learn daily temperature change with the weather and a rule of the weather changes. Also, those aged of 13 to 14 learn a mechanism of the weather change and the seasonal variation of the weather in Japan. A weather information network was constructed to provide weather information to schools for using in precollege meteorological education in the classroom. Satellite images, meteorological element data and weather charts have been collected. Real-time and typical data are provided through a telephone line with a data modem. After gaining access to the network, the user can regard the file server as a virtual drive on his or her computer without knowledge of telecommunication protocols, and download files of the data from the server. It took 80 to 120 seconds to download an infrared satellite image having 400 Kbytes. A large quantity of data can also be provided by a CD-ROM according to user's request. A software package, which allows remote users to use the satellite images as teaching materials, was developed. The basic aim in designing the software was that precollege students can study the weather by themselves. The main functions for using in classrooms are as follows : 1) displaying an infrared image and a visible image around Japan ; 2) displaying a infrared image of the earth ; 3) animation of images ; 4) magnifications of the image ; 5) coloring area of a specified range of temperature or reflectivity ; 6) superimposing a visible image on an infrared image ; 7) displaying of a stereoscopic image ; 8) outputting to a printer or a graphic software. A short course for precollege teachers to promote the use of our network for classroom teaching was held. 24 teachers attended the course.