Data Access

Access to the WOUDC data archive is available via numerous mechanisms in support of vendor neutral, multi-application access and integration. Whether you are using the website, geospatial tools or custom solutions, the WOUDC data archive provides flexible, authoritative data access.

Every effort has been made to make the WOUDC data archive as accessible as possible. If you have any questions, comments, or suggestions on improving data access, please contact us.

Data Policy
All data and metadata are subject to the WOUDC data policy.
Data Revisions/Updates
The data revision dates are available on the stations list for stations that have provided revised data.

Data Search / Download

Observation data are made available via the data search / download page, which allows users to browse and filter the entire archive in a responsive, interactive manner. All data provide a link to download data for offline use in a variety of formats.

Please consult the Data Search / Download How To for detailed information.

Please note that dataset specific limits are put on bulk data download to maintain quality of service.

Web Accessible Folder (WAF)

The entire archive of contributed data files in Extended CSV format is made available at Web Accessible Folder for users to browse, download or integrate into their workflows.

Static dataset archive files are also available on the WAF in CSV format with ZIP compression. These archive files are updated on a daily basis and provide users the option to download an entire dataset in CSV format.

Please consult the WAF How To for detailed information.

Web Services and APIs

In addition to traditional data access mechanisms, WOUDC has made the archive available using Web Application Programming Interfaces (APIs) and geospatial web services adhering to publically available international standards. Web APIs are designed to support machine to machine interaction over the Internet, and can be used in web, mobile or desktop applications and tools.

WOUDC APIs support open standards from the Open Geospatial Consortium (OGC) which facilitate interoperability and thus make ozone and UV data easy to discover, access, visualize and integrate. OGC standards play an important role in weather/climate/water data exchange as part of the WMO Information System and are supported by numerous off the shelf open source or commercial tools.

WOUDC provides a central OGC API at the following endpoint: https://geobeta-woudc-dev.cmc.ec.gc.ca/oapi

The API provides discovery, access and visualization functionality to all WOUDC data and metadata, as well as providing processes for data validation and quality assessment.

Please consult the Web Services How To for detailed information.

Examples

The following GitHub examples provide high level access and workflow examples of integrating WOUDC Web Services:

pywoudc : High level package providing Pythonic access to WMO WOUDC data services
notebooks : A collection of data centre workflows implemented as IPython notebooks