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Article Excerpt
To interest students in the science of weather and technology of weather data processing, a web-based system for making satellite images available in a classroom was designed. This system automatically processes and stores constantly updated data. In this process, the file size of data is reduced, thus enabling quick downloading but maintenance of high quality images by lossless compression. Also, a full-disk image of the globe is produced by integration of four original images, thus making analysis easier. Infrared satellite images of eastern Asia, visible images of eastern Asia and infrared images of the globe were supplied to a Web server. A software program to enable display, storage in a bit-mapped format, enlargement, and reduction of these images was developed and is offered on the Web.
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Widespread study of weather in a classroom would not only improve the scientific literacy of students but would also provide a useful means for introducing information technology into the classroom.
In Japan, 5th-grade students learn that weather change can be predicted using weather information, and 8th-grade students learn how weather changes when a front passes through an area. Basic meteorology, including the motion of air, clouds and precipitation, and seasonal variations in weather are also taught as part of the earth science curriculum in high schools in Japan. The results of the questionnaire survey showed that about 85% of 5th-grade students in Japan had often seen a weather forecast on TV or in a newspaper and that 75% of them had made use of the information in their everyday lives. These results indicate that students direct attention to daily weather, which will provide a helpful beginning for weather study. Availability of weather data, including satellite images, the Internet being one of the best sources of such data, is necessary to further encourage students to study weather. Satellite images are particularly important for the study of weather because the images have a strong visual appeal to students and thus the application of such images would result in an expansion of a student's perspective from a local-scale view of...
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