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WMO Commission for Hydrology, CHy-15 session: results relevant to the activities of the GRDC

The 15th Session of the Commission for Hydrology (CHy) was held from 07 – 13 December 2016 in Rome, Italy. 140 representatives from 57 WMO member countries and 11 international organisations attended.

Results relevant to the activities of the GRDC are briefly summarized:

  • The CHy-14 Session offered an excellent opportunity to discuss river discharge data provision from the various National Hydrological Services (NHSs) to the GRDC. Existing contacts could be reaffirmed and new contacts could be established.
  • Furthermore he reported that the OGC® WaterML 2 – Part 3: Surface Hydrology Features (HY_Features) Conceptual Model formerly known as “The HY_Features: Common Hydrological Feature Model” has been released as an OGC Best Practice Paper and has now entered the final phase of becoming an accepted OGC standard, following Part 1: Timeseries and Part 2: Ratings, Gaugings and Sections in the ‘OGC WaterML 2’ suite of standards that groups water-related OGC standards.
  • In Draft Recommendation 4.1(3)/1 (CHy-15) the Commission recommends to EC-69 to decide to amend the Manual on Codes (WMO-No. 306) Volume I.3 and the Guide to Hydrological Practices (WMO-No. 168) Volume I to introduce WaterML2 Part 1 and WaterML2 Part 2 as data representations that are suitable for the exchange of hydrological information.
  • In the domain of production and management of data, WMO provides its Members support through the Global Hydrometry Support Facility (GHSF) and WHYCOS (both discussed in CHy-15/Doc. 4.1(2)), WHOS, MCH, the adoption of standards to facilitate and promote data exchange, such as WaterML 2.0, and the global data centres, namely GRDC, GPCC, IGRAC and HYDROLARE.
  • The Commission expressed its gratitude to Germany, the Netherlands and the Russian Federation for hosting the four global data centres under the auspices of WMO, which had continued to provide support to water resources management worldwide through the maintenance of repositories of data and information made available in accordance with WMO data policies. These long-standing contributions are also acknowledged in Draft Resolution 4.1(3)/1 (CHy-15).
  • Furthermore in the same draft resolution the Commission requests the president of CHy to form a small task team in charge of preparing a report to the Executive Council with regard to the evolving role of the GRDC, IGRAC and HYDROLARE, and their relationship with WMO, with respect to the monitoring and measurement of the achievement of the SDGs, their contributions to GFCS and support to WHOS, GHSF and other CHy initiatives.
  • The Commission appreciated the substantive contributions towards the GCOS Implementation Plan by the Global Terrestrial Network – Hydrology (GTN-H) through its federated global data centres including GRDC, GPCC, IGRAC and HYDROLARE.ng commitment from the NHSs to provide data to the GRDC was observed and the GRDC is now trying to follow up on all the leads.

The CHy-15 Session offered an excellent opportunity to discuss river discharge data provision from the various National Hydrological Services (NHSs) to the GRDC. Existing contacts could be reaffirmed and new contacts could be established. A strong commitment from the NHSs to provide data to the GRDC was observed and the GRDC is now trying to follow up on all the leads.

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