Interoperable Access and Interactive Exploration of HF Radar Data

This paper describes a data access and interactive exploration infrastructure for High Frequency Radar (HF Radar) data, developed in the scope of the RADAR-ON-RAIA EU project. The data access server is based on the use of Open Geospatial Consortium (OGC) standards, namely, the Observations and Measurements (O&M) data model and the Sensor Observation Service (SOS) interface. The use of those standards in an efficient implementation for remote sensing data is an innovative work that solves some problems not tackled by the previously available infrastructure, based on a THREDDS Data Server (TDS). The data exploration infrastructure includes a web based Graphical User Interface (GUI) at the client side and spatio-temporal probabilistic structures at the server side and it enables the visualization of statistical summaries of the data at different levels of resolution with interactive response times.