【摘要】 随着科学数据共享服务的发展,科学数据共享平台需要实现的不只是元数据的查询和导航,更要实现科学数据的统一访问。目录服务统一实现了数据的发现、访问和管理是科学数据共享服务技术体系的重要组成部分,它的核心技术是元数据技术。在分析气象科学数据共享服务的特点基础上建立的气象元数据目录服务系统,由元数据网关、元数据服务器、元数据目录服务及元数据库组成。它实现了分布式的数据存储、统一的目录服务和数据访问、统一认证和分布式授权等功能,丰富了气象科学数据的共享手段,提高了服务效率。元数据目录服务技术也将在其他气象信息管理平台和气候系统数据库系统建设中发挥重要的作用。更多还原

【Abstract】 Scientific data sharing system shall provide the functions of uniform data access in addition to metadata query and navigation.Metadata Catalogue Service(MCS)is the key component of meteorological data sharing service system for the purpose of scientific data discovery,access and management.Based on the analysis of user’ s abundant requirements,we develop meteorological metadata Catalogue service system,which consists of metadata gateway,metadata server,Catalogue service,and metadata database.A meteorological Catalogue service system is built in this study based on the characteristics of meteorological data sharing service and implements the functions of distributed data management,consolidated Catalogue service and data access,unified security authentication and distributed authorization.MCS enhances the means of meteorological data sharing and improves the quality of on-line data service.MCS technology can also be applied in meteorological information management system and climate change database system in the future.更多还原