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A Comparison between WCS and OPeNDAP for Making Model Results and Data Products Available through the Internet

机译：WCS与OPeNDAP之间的比较，用于通过Internet提供模型结果和数据产品

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摘要

Numerical models produce output with a large number of variables, grid cells and time steps. The same applies to algorithms that produce gridded datasets from sparse or abundant raw data. Further use of the resulting data products has been challenging, especially for dissemination outside the institute of origin. Due to the gradually increasing size of data products, simply downloading copies of them is becoming impossible. A gradual transition from traditional download methods to web services is therefore observed. Web services allow for on-the-fly access to subsets of data that were hitherto considered as indivisible granules. Here we compare the most mature candidates to serve gridded data through the web: the Open-source Project for a Network Data Access Protocol (OPeNDAP) and Web Coverage Service (WCS) protocols. In the framework of the new Dutch National Model and Data Centre (NMDC.eu) a distributed data storage has been created by coupling OPeNDAP servers. A WCS service layer is provided for the same data. This allows us to compare OPeNDAP and WCS. Using several use cases, we compare the usability, performance and features of the two protocols.
机译：数值模型产生的输出带有大量变量，网格单元和时间步长。这同样适用于从稀疏或大量原始数据生成网格化数据集的算法。进一步使用所得数据产品具有挑战性，特别是对于在原始机构之外进行传播。由于数据产品的大小逐渐增加，简单地下载它们的副本已变得不可能。因此观察到从传统的下载方法到Web服务的逐步过渡。 Web服务允许即时访问迄今为止被视为不可分割的颗粒的数据子集。在这里，我们比较最成熟的候选人来通过Web服务网格数据：网络数据访问协议（OPeNDAP）和Web Coverage Service（WCS）协议的开源项目。在新的荷兰国家模型和数据中心（NMDC.eu）的框架中，通过耦合OPeNDAP服务器创建了分布式数据存储。为相同的数据提供了WCS服务层。这使我们可以比较OPeNDAP和WCS。使用几个用例，我们比较了两种协议的可用性，性能和功能。

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