气象数据文件快速下载服务系统的设计与实现  

Meteorological Data Files Quick Download Service System

作　　者：高峰[1] 王国复[1] 喻雯[1,2] 冯明农[1] 孙超[1] 罗琦[3] 

机构地区：[1]国家气象信息中心,北京100081 [2]北京航空航天大学,北京100191 [3]甘肃省气象信息与技术装备保障中心,兰州730020

出　　处：《应用气象学报》2010年第2期243-249,共7页Journal of Applied Meteorological Science

基　　金：国家科技基础条件平台工作专项资金项目(2005DKA31700)资助

摘　　要：有效地为专业和业务用户提供快速批量下载气象数据服务,需要一种新型数据服务系统,以弥补现有气象数据共享服务系统的不足。该文在分析气象资料服务系统发展阶段和技术特点的基础上,根据业务需求设计了一个基于元数据技术的、针对专业和业务用户的、能快速批量下载数据的新型气象资料服务系统。该系统基于前台应用系统和后台管理系统实现了批量下载、文件目录导航、数据同步更新、多线程断点续传、安全管理和灵活配置等功能。该系统是对气象资料服务方式的一种全新设计,系统发布后得到专业用户的肯定,具有广泛的推广价值,对气象数据服务系统的技术开发有较好的参考作用。The development of meteorological data service system is summarized as 4 stages：Stand-alone file retrieval stage,the interface calling stage,database system stage and distributed data service stage.The current service system can meet the needs of most users querying data,but for meteorological professional and operational users,the system has certain limitations.These users call for a new data service system that offers fast bulk download meteorological data services,which should also be established to make up for the deficiencies of existing meteorological data-sharing service system. According to operational requirements,a new meteorological data service system is designed based on metadata technology,through which professional and operational users can quickly download batch of realtime meteorological data.The system is based on front-end application systems and background management systems to achieve a bulk download,file directory navigation,data synchronization update,multi- threaded HTTP,security management,and flexible configuration capabilities.With the system,users can use third-party software to download great amounts of meteorological data files.Based on the file directory navigation provided by the system,users can access the data level by level following the data classification and the time characteristics,and can flexibly select and retrieve the data.The system achieves the meteorological data collection system synchronous update,and users can access to download the latest meteorological data products. The system is a brand new design for the meteorological data services,and has been well accepted by the professional users.It has a wide range of promotional value and is good reference for future development of meteorological data service system.

关 键 词：数据服务 元数据 目录浏览 增量同步 

分 类 号：TP311.52[自动化与计算机技术—计算机软件与理论]