C303 GISを用いた海氷衛星観測データ解析

抄録

Limited by the serious natural conditions in polar areas, the sea ice observation is mainly carried out through microwave satellite remote sensing. The observed data, however, are the brightness temperatures, which reflect the emissive features of different types of earth surface. Lots of algorithms have been developed for analyzing these data to estimate sea ice distributions. It is necessary to apply the appreciate algorithm to a certain area, because that the sea ice emissive feature is different regionally, even locally. To address the problem, a system based on commercial GIS software, ArcView, is developed in this study. It includes the most popular algorithms to retrieve sea ice distribution from DMSP SSM/I data. Study area determination and algorithm selection are executed through a visualized interface. Using the system, we evaluated NASA Team algorithm, and suggested the revision proposal.