SWE Ingestion Service and User Interfaces. Version 1.1.

Abstract

SeaDataNet strives for a common standardised approach for describing and giving discovery and access to marine data from different marine disciplines. Next to delayed mode data sets by means of the CDI data discovery and access service, standardising efforts are also directed towards (near) real-time data streams as collected by operational sensors and platforms. For this application, the SeaDataCloud project has built upon these SWE standards to support the interoperable sharing of (near) real-time observation data streams. A SeaDataCloud team, led by partner 52°North, has developed the open source SeaDataNet SWE Toolkit which comprises the following components: - SWE Ingestion Service: this component supports sensor operators to receive and ingest marine observation data from platforms and sensors into a local storage database. From there (selected) data can be published as streams of (near) real-time observation data by means of SOS servers. As first step after installing the Ingestion service, the structure of the data stream has to be described in the local database, specifying platforms and sensors with SWE metadata profiles, supported by SeaDataNet SWE vocabularies, and using the 52°North SMLE editor. - SWE Viewing Services: This component, which is based on the 52°North Helgoland Sensor Web Viewer, is an application for exploring and visualising the data streams as retrieved through the SOS services. The viewer supports different types of observation data. It is capable to visualise data measured along trajectories (e.g. by research vessels) as well as profile data, besides time series data showing the historic variations of one or more parameters at fixed locations (e.g. fixed buoys and sensor stations). This document describes the implementation of the SeaDataCloud SWE Ingestion Service. The aim of this component is to support sensor operators, researchers and data owners during the publication of collected marine observation data. A more detailed specification of this component is available as part of the SeaDataCloud deliverable D9.9 “Specification of the SWE ingestion service, including SWE profiles and architecture”. The description in this document comprises on the one hand the backend implementation which performs the collection of data from different sources, the interpretation and conversion into an internal data model (based on the ISO/OGC Observation and Measurements (O&M) standard, as well as the publication of the collected data into the database of an interoperable OGC Sensor Observation Service (SOS) instance (section 3). On the other hand, a frontend component is described which allows to define and manage data ingestion workflows (section 4).