四维尺度范畴公共气象服务同构模型研究

公共气象服务"同构"出公众、决策、专业气象服务。然而,同构尚未得到重视,带来公共气象服务系统一些缺欠:难以满足多时空、多内容、多表现Web服务需求;省际间系统对接困难;区、县局部系统难以集成到省、市乃至全国系统。该文以范畴论为指导,设计气象服务同构模型,以"全面覆盖","统一平台"和"易于推广"为理想,构建基于软件重用的气象服务系统。以国家公共气象服务分类规范为依据,将规范蕴含的时间、空间、内容和表现特征进行尺度量化得到四维气象服务空间;进而引入数据库邻接表模型、图形种子填充算法、气象地理信息系统、本体知识管理系统、气象内容管理系统、Google在线地图服务、面向服务架构等多个软件平台,并作用于维度内各个对象,从而完成模型设计。目前,模型已应用于中国天气网四川站,四川省市县三级气象服务网等203个不同行政级别的网站,同时提供各自公众、决策、专业气象Web在线服务。

Four Dimension Isomorphic Model for Public Weather Services

The isomorphism of public weather service is out of the weather services, but the isomorphism is not be paid enough public, policy makers, professional attention. Consequently, the public meteorological service is unable to meet the needs of multiple time-space scales, more content, and more manifestation online Web service, leading to the difficulties in the docking of inter-provincial systems and the integrating of local systems （province-, county-, or city-level） into the national system. Taking category theory as a guide, the isomorphic model for four-dimensional meteorological Web service, a system based on software reuse, is established, in an attempt to achieve the goals of ＂full coverage＂, ＂uniform platform, ＂ and ＂easy to promote. ＂ Based on the specifications of the national public weather service classification, the four-dimensional meteorological service containing time, space, content, and manifestation is obtained through scale quantification and, then introduction of the database adjacency model, seed fill algorithm, meteorological geographical information systems, knowledge management systems, and meteorological content management system, Google Maps software, service-oriented architecture, etc., which act on the various objects within the four dimensions. Currently, the systems can provide Web online services to the public, policy makers, and professionals for 203 meteorological Web sites.