Data

Access

OcToPUS provides a gateway to many datasets related to the marine environment. The datasets are harmonised and can be searched seamlessly by variable name, geographic area, depth, time and resolution. There are several ways to access data in OcToPUS.

Ocean Data Explorer

The Ocean Data Explorer provides an intuitive interface to search datasets that are available through OcToPUS. Data can be queried, analysed and visualised in space, time and depth. Direct download options are provided along with respective OGC Web Service URLs for programmatic access. Watch this short video to see how it works.

OGC Web Services

OcToPUS uses Geoserver to expose its data as OGC Web Services (WMS, WCS, WFS). These services can be used by third party applications such as desktop GIS or online maps to access data from OcToPUS programmatically. Example URLs for WMS and WCS queries are provided below. More queries can be found in the download section for each dataset in the Ocean Data Explorer. Please also check out the Geoserver documentation if you want to learn more about how to construct OGC Web Service URLs.

https://octopus.zoo.ox.ac.uk/geoserver/wms?service=WMS&version=1.3.0&request=GetMap&width=1500&height=750&layers=processes:npp_mn_p1y_009_vgpm&format=image/png&bbox=-90,-180,90,180&time=2015-12&srs=EPSG:4326

This URL issues a Web Map Service (WMS) request to get a rendered map of Net Primary Productivity (NPP) with annual mean temporal resolution (MN_P1Y), native spatial resolution of 0.09 degrees (009) from the Vertically Generalized Production Model (VGPM). The query returns a rendered image as PNG (FORMAT), for a spatial bounding box (BBOX), time (TIME) and Coordinate Reference System (CRS).

https://octopus.zoo.ox.ac.uk/geoserver/wcs?service=WCS&version=1.0.0&request=GetCoverage&coverage=processes:sst_p1m_009_avhrr&format=geotiff&bbox=-126,32,-117.4,48.2&time=2012-12&crs=EPSG:4326&resx=0.09&resy=0.09

This URL issues a Web Coverage Service (WCS) request to get coverage data of Sea Surface Temperature (SST) with monthly temporal resolution (P1M), native spatial resolution of 0.09 degrees (009) from the Advanced Very High Resolution Radiometer (AVHRR). The data are requested as GeoTIFF (FORMAT), for a spatial bounding box (BBOX), time (TIME), Coordinate Reference System (CRS) and resolution (RESX, RESY).

Thredds Data Server

OcToPUS uses a Thredds Data Server to provide additional data access protocols such as OPeNDAP or HTTP file download. Please check out the Thredds Data Server documentation if you want to learn more about how to request data via OPeNDAP.

Metadata Catalog

OcToPUS uses a Catalog Service of the Web (CSW) to define a common interface to discover, browse, and query metadata about data, services, and other resources offered through OcToPUS. As part of the preprocessing routines to ingest new datasets into OcToPUS we harmonise metadata between different sources and complement them if needed to follow international standards and best-practises for geo-spatial metadata handling.

Sources

OcToPUS gets data from a large variety of open sources. Keeping data origin transparent and acknowledging providers is of highest priority to us. The following list provides an overview of currently used sources and institutions that provide the datasets. More details for specific datasets are shown in the Ocean Data Explorer and are embedded in the file headers.

Source Institution
Aquamaps Marine Species Maps Aquamaps
Aquarius CAP 1x1 Deg Gridded Averaged Maps Jet Propulsion Laboratory
AVHRR NCDC-L4LRblend-GLOB-AVHRR_OI National Climatic Data Center
FAO Fishing Areas Food and Agricultural Organization (FAO)
FAO Regional Fisheries Bodies Food and Agricultural Organization (FAO)
General Bathymetric Chart of the Oceans Intergovernmental Oceanographic Commission
Globcolour CHL1AV ACRI-ST
Globcolour KD490 ACRI-ST
International Seabed Authority Marine Mining International Seabed Authority
InterRidge Global Database of Active Submarine Hydrothermal Vent Fields Version 3.1 InterRidge
Marine Regions EEZ Flanders Marine Institute
Marine Regions IHO World Seas Flanders Marine Institute
Marine Regions Longhurst Biogeographical Provinces Flanders Marine Institute
Maritime traffic density: Results of Pasta Mare project European Commission Maritime Forum
MPAtlas Marine Conservation Institute
National Geospatial-Intelligence Agency World Port Index National Geospatial-Intelligence Agency
Ocean Biodiversity Information System Intergovernmental Oceanographic Commission
Ocean Tool for Public Understanding and Science Department of Zoology, University of Oxford
OpenStreetMap OpenStreetMap Foundation
OpenStreetMap (OSM) and General Bathymetric Chart of the Oceans (GEBCO) OpenStreetMap Foundation
The Global Human Settlement Layer Population Grid European Commission Joint Research Centre
UNEP WCMC Dataset 1 UNEP World Conservation Monitoring Centre
UNEP WCMC Dataset 3 UNEP World Conservation Monitoring Centre
UNEP WCMC Dataset 4 UNEP World Conservation Monitoring Centre
UNEP WCMC Dataset 41 UNEP World Conservation Monitoring Centre
UNEP WCMC Dataset 7 UNEP World Conservation Monitoring Centre
VGPM Oregon State University Ocean Productivity
World Ocean Atlas 2013 National Oceanographic Data Center
WWF Marine Ecoregions of the World World Wildlife Fund (WWF)