Data-flow manual open for discussion


The lead centre has prepared a collection scheme for meta-data related to GRUAN measurements. All information describing sites, measuring systems, and measurements will be collected with well-defined XML files and stored in a meta-data base at the lead centre. There are comfortable tools available programmed in Java for generating and submitting the GRUAN meta-data (GMD) files.

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Dissemination of near-real time data in the GRUAN


Anna Kuhn wrote:

There is a discussion, if we want an Action Item on the possibility of dissemination of near-real time data in the GRUAN Implementation Plan. From my point of view, NRT data dissemination could be done by one or a combination the following options:

  • Send data via the GTS, in BUFR (preferably), alphanumeric or CREX code. It has to be clarified, whether
    • all (current and future) GRUAN stations are already part of the GTS and could use their national standards, or
    • if the GRUAN data archive would be connected to the GTS, or
    • if the Lead Centre would collect and transfer the NRT data.
  • Send data via email to a GTS centre. (often used as back up)
  • Post NRT data as RSS. Users could subscribe for example on the GRUAN website.

What’s your opinion on this matter or do you have more information about the sites and their existing connections to the GTS?

FAQ-16: Does GRUAN require real or near real time data dissemination?


Real time and near real time delivery of observations is currently not a priority for GRUAN. The requirements for GRUAN are to provide upper reference observations of climate research, for the validation of globally comprehensive observations systems and for the complete characterisation of the atmospheric column. These requirements will require additional processing, which is not expected to be delivered in near real time. Stations, which already deliver observations in near real-time are encouraged to continue this delivery schedule in support of numerical weather forecasting. However, stations not connected to real time data streams are not expected to implement near real time data delivery.