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Interim extranet supporting technical-related activities

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WIS access and usage - Search/Subscribe/Publish


Accessing and using WIS

Three levels of access
  1. General ad hoc discovery and download
  2. Registered for subscription
  3. Registered for publication
Each level inherits the access of the level above it. i.e. Registered for publication gives general and subscription access

General access

  • Any one can go to a GISC and search and, subject to the data policy, down load products discovered
  • If it is Res 40 essential or unrestricted GTS traffic and less than 24 hours, it can be obtained from the GISC
  • Other information is accessed from the information custodian
    • The custodian is normally, but not necessarily a WIS centre
  • GISCs - Go to http://www.wmo.int/giscs and select the GISC you wish to visit
  • Any centres (inlcuding GISCs) - Go to http://wis.wmo.int/WISCentresDb and select the centre link under the "Function" column

Ability to subscribe using a GISC service

  • Authority to register to subscribe to a GISC service comes from either the GISC or National WIS focal point
  • Not all GISCs offer the same resolution of subscription services
  • Normally limited to new information, often only GTS traffic
  • Have to subscribe to a data custodian if not circulated on WIS.

Down loading of information

  • Downloading methods are described in WIS TechSpecs 10, 11 & 12
    • See WMO No 1060 Part IV, para 4.11-4.13 & appendix D)
  • Normally by http, ftp or email
  • Some GISCs require registration to down load data.
  • Registration necessary if using ftp and email
  • Always necessary if subscribing.
  • Can use GTS for downloading via subscription services if connected to GTS (ie an NMHS)
  • Format is file (unless on older GTS circuit where bulletin may not always be in file format)
  • File names normally GTS file naming convention.

Ability to publish

  • Publishing can only be through a registered data centre (NC or DCPC)
    • A strict governance process is in place for a publisher to be registered as a data centre (NC or DCPC)
    • Registration involves PR, TC and RA
    • Centre must be WIS compliant
  • WIS centres can publish information on behalf of other contributors but are responsible for compliance as if they were the originator.
  • Some GISCs may host data centre’s publishing service
    • i.e. GISCs may accept input from a non-NC or non-DCPC source, where an NC or DCPC has authorized a source to publish direct to the GISC
  • All information must have a WIS discovery metadata record published before the information can be sent or discovered in WIS
  • See WIS TechSpec 1 (WMO No 1060 Part IV, para 4.2 & appendix D)

Publishing information on WIS

  • Uploading information is normally by a file sent by a method agreed between the provider and uploading WIS centre
    • See WIS Tech Spec 2 (WMO No 1060 Part IV, para 4.3 & appendix D)
  • If data is to go on GTS, the file should comply with GTS file naming convention
    • See GTS Manual, Part II, Attachment II-15
  • WMO approved format (data representation) is preferred but not compulsory
  • Most common or preferred methods are via ftp or email from provider to the uploading WIS centre
  • If the WIS centre is on GTS, then may use normal GTS publishing.
  • Receiving centre is required to check existence of WIS discovery metadata
Note:GISCs will allow a grace period of 2 minutes for metadata to turn up before rejecting the product

How do users subscribe to newly published information?

  • Uploading to WIS does not guarantee distribution
  • WIS and the GTS is subscription based
  • People must be alerted to new products so that they can subscribe
  • Process for GTS is Metno with fixed publishing deadlines
  • For other WIS information, some GISCs support RSS alerting to new products
  • In most cases, it is up to the publisher to advise the target community that the new product is coming.
Additional users may find the product through DAR or RSS.

Further information

  • If you have any questions, please email wis-help@wmo.int or consult with your GISC help desk


Page last modified on Friday 25 of November, 2016 09:21:13 CET