Data Discovery services

• Sensor data from >120 stations• Data and metadata archived in a central trusted repository based on the EUDAT/CDI B2SAFE service• All ICOS data products get a unique persistent identifier (PID)

• Standardized data processing by experts at Thematic Centers• Quality controlled & aggregated data available from Carbon Portal• Centralized metadata catalog for data discovery & usage tracking

• User-supplied “elaborated” data products distributed by Carbon Portal• ICOS data staged to HTC & HPC facilities (e.g. EGI FedCloud/EOSC)• All ICOS data free, available under Creative Commons 4.0 BY

What is ICOS?ICOS (Integrated Carbon Observation System) is a pan-European research infrastructure for observing and understanding the greenhouse gas (GHG) balance of Europe and its adjacent regions. ICOS brings together researchers from three domains – atmosphere, ecosystem and ocean. As of July 2016, ICOS has 11 member countries, and is performing measurements at a total of 130 stations on land and at sea.The major mission of ICOS is to collect and make available high-quality observational data from its state-of-the-art measurement stations operated with a long-term perspective. To achieve this, ICOS is developing a series of sustainable data management and computing services based on Open Source technology.

• Advanced, facetted search • Visualize any combination of parameters from the selected datasets• Inspect metadata of data at “landing pages”• Download selected datasets placed in “Data Cart”

• Raster data visualizations• Time-series of multiple selected variables• Suitable for any “elaborated” 2D data product, here “atm. station emission sensitivity footprints”• Animations shows evolution over time

• Interactive graphs of data produced in the ICOS Jupyter Notebook Virtual Research Environment• Full Python functionality available• Visualizations, calculations of statistics etc. based on ICOS-provided code or user scripts

Services summary Technologies used Trust & reproducibilityICOS operates different services to support ICOS’ internal data management and the end users: • Data ingestion & storage• Minting of persistent identifiers• Metadata management & cataloguing• Search & discovery services • Visualizations of time series and raster data• Download service using Data Cart• Measurement station registry• Virtual Research Environments: data processing• Single-sign on & user profile management• Content & document management system

ICOS Carbon Portal uses the following software and technologies:• Frontend: ES6 JavaScript, React/Redux, Leaflet, OpenLayers, Bootstrap• Backend: Scala/Java, Akka• Metadata: RDF, OWL, SPARQL, PostgreSQL• Deployment: Linux, Docker, JVM, EGI FedCloud• Data storage: Linux RAID50, EUDAT/CDI Services• CMS: Drupal, Alfresco• Scientific computing: Python, R, Fortran

• Environmental and climate observations data are unique and cannot be reproduced – extra care is needed to secure long-time storage of the data and its associated metadata• Datasets should be citeable in an unambiguous manner – both in scientific literature and provenance contexts such as workflows• ICOS is implementing an ontology-based metadata catalogue describing all aspects of the project: sensors, measurements, data objects, people and publications • Persistent identifiers are assigned to all data objects: ePIC PIDs for sensor data, DataCite DOIs for finalized and elaborated data products

Also see: Poster 137 , Karstens et al. Also see: Poster 142, Van der Laan et al

1 ICOS ERIC 2 ICOS Carbon Portal @ Lund University, Sölvegatan 12, 223 62 Lund, Sweden 3Wageningen University & Research, Netherlands *alex.vermeulen@icos-ri.eu

The ICOS Carbon Portal Service PortfolioAlex Vermeulen*,1,2, Maggie Hellström2, Ute Karstens2, Ingrid van de Laan-Luijkx3, Harry Lankreijer2, Oleg Mirzov2,

Andre Bjärby2, Roger Groth2, Lars Harrie2, Paul Hedberg2, Mitch Selander2