MSG-CPP Data Access
dataplatform.knmi.nl
The CPP products are available for the full MSG disk covering the past two weeks at the KNMI Dataplatform. The access documentation provides detailed instructions on how to obtain both anonymous and authenticated access to the Open Data API, MQTT notifications, and WMS services. The available products can also be previewed.
WMS Service
A WMS service is available to visualize and download the MSG-CPP products.
The services adhere to the specifications of the Open Geospatial Consortium (OGC) and can be used anonymously, with a strict request limit, and with an API key. The services work independently of the provided portal, e.g. anybody can use the services directly in their own viewer by using the service links provided in this page. The dataplatform WMS API documentation provides more information.
The services can be viewed directly in a web portal, for example on the KNMI ADAGUC viewer:
ADAGUC and OGC Web Services
The spatial data infrastructure is based on OGC compliant web services. These web services include Web Mapping Services (WMS) for online visualization and Web Coverage Services (WCS) for downloading raster data. The MSG-CPP data is produced in the network common data format (NetCDF) with Climate and Forecast (CF) conventions and then offered in the OGC services.
The high resolution of the images and the large data volumes are challenging for real-time and web based visualization services. The ADAGUC OGC server has been optimized to enable quick rendering of visualizations from NetCDF data. The server reads the NetCDF4 files directly and interpolates the data to the desired geographic projection and location. A feature of the server is the support for NetCDF flag values and flag meanings as specified in the CF conventions.
OGC Web Map Service (WMS) URLs
GetCapabilities
Using this request an XML file with description of the OGC WMS service is obtained:
Example GetMap Request
Here is a GetMap request of the most recent global radiation image.
OGC Web Coverage Service (WCS) URLs
GetCapabilities
Using this request an XML file with description of the OGC WCS service is obtained:
Example GetCoverage Request
This is a request with which data can be interpolated, subsetted, reprojected and converted to different formats. In the example URL below, the current (latest available) precipitation rate is projected to latitude-longitude projection (EPSG:4326). An area of longitudes between 0 and 15 and latitudes between 45 and 60 containing 100x100 pixels is selected. The requested file format is NetCDF.