With the advancement of Web technologies, the service-oriented approach has become increasingly popular to share and couple environmental models. Interoperability is critical to the access and integration of Web services. The OGC Web Processing Service (WPS) defines an interoperable protocol for process execution on the Web. However, it has limitations in supporting time-step calculations that are usually required by complex models, e.g., time marching models. The Open Modelling Interface (OpenMI) standard brings about interoperability for time-step based interactions between modeling components. This paper introduces an approach to sharing environmental models on the Web by coupling OpenMI and WPS. Key issues, including maintaining state, data representation, model description, and model execution, are considered in our approach. An open-source software is developed to support the deployment of the environment models in an interoperable way. TOPMODEL and SWMM5 use cases illustrate the applicability of the approach and implementation.

随着Web技术的进步，面向服务的方法已变得越来越流行，可以共享和耦合环境模型。互操作性对于Web服务的访问和集成至关重要。OGC Web处理服务（WPS）定义了一种可互操作的协议，用于Web上的流程执行。但是，它在支持复杂模型（例如时间行进模型）通常需要的时间步长计算方面存在局限性。开放建模接口（OpenMI）标准带来了建模组件之间基于时间步长的交互的互操作性。本文介绍了一种通过结合OpenMI和WPS在Web上共享环境模型的方法。我们的方法考虑了关键问题，包括维护状态，数据表示，模型描述和模型执行。开发了一种开源软件，以一种可互操作的方式支持环境模型的部署。TOPMODEL和SWMM5用例说明了该方法和实现的适用性。