基于Web Service的在线水文模型服务研究

通过分析目前水文模型本地服务模式的不足,针对当前国内外Web Service技术在水文信息系统中的应用现状,设计并实现了一个基于Web Service技术的在线水文模型服务系统,示范了基于Web Service技术的网络数据获取、水文模型运行模拟等过程,说明基于Web Service技术的在线水文模型服务较好地实现了水文模型网络共享,支持异地模型访问。建议在线水文模型服务结构从网络数据库/数据中心获取数据,一定程度上解决了传统模式从本机上传海量数据等问题。这种在线水文模型服务模式节约了模型运行成本、降低了用户要求,在具体水文水资源管理事务中具有较好的应用和拓展前景。

Online Hydrological Model Service Using Web Service

Traditionally,hydrological models are running on a local computer together with all necessary driven data and parameters.With the development of the Internet,models and data are increasingly shared across the Internet,which makes public involvements possible when models are used for public decision making.This paper proposed a framework for online hydrological model services using the Web service technology.The system architecture and key implementation issues were discussed.An example client application demonstrates the utilization of such model and data services.The framework is highlighted by accessing data from online data centers.By linking to the online data centers,for example,to the Environmental and Ecological Science Data Center for the West China,the system can obtain most data for the model from the data center,in such way we mitigate the pressure of data transfer between user and model server.The proposed online hydrological model framework makes hydrological model run on remote servers,lowering operation costs.It can be helpful in water related management practices which often use hydrological models and want public to involve.