WG1 on data management and standardization
WG1 is focused on improving availability of well-documented OS historical and operational data and definition of benchmark datasets.

■ WG1
Activity 1
Curation and standardisation of individual datasets
- T1.1. Defining a common format for data exchange which will allow both the research community and stakeholders to efficiently store, organise and share large datasets. Defining minimal and optimal metadata standards for different sensor types. (RCO 1)
- T1.2. Coordinating sharing and curation of individual datasets acquired by Action members in past and current projects (e.g. through Zenodo community repository). Coordinating (with WG4, T4.3) legal steps necessary to unlock these datasets and possibly publish them under open licence. (RCO2)
■ WG1
Activity 2
Compiling of (benchmark) datasets
- T1.3. Gathering an OS dataset geographically covering several neighbouring countries to enable large-scale OS validation (RCO 2)
- T1.4. Complementing (e.g. with meteo services being part of the Action) existing OS dataset with surface and radar observations from standard monitoring networks and by hydrological (esp. runoff) observations (RCO2).
- T1.5. Compiling one joint real-world benchmark dataset representing different climatic regions and a representative (sufficiently large) set of OS sensors and standard observations (RCO3)
■ WG1
Activity 3
Establishing operational access to OS
- T1.6. Establishing and maintaining operational access to OS data from at least two regions/ countries (RCO6).
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WG2 l coordinates comparison and homogenisation of methods needed for operationalisation of OS precipitation observations with focus on i) automated quality control, ii) fast processing, and iii) uncertainty assessment.

WG3 coordinates the research agenda on merging different types of OS with each other and with traditional observations. It will coordinate the creation of OS precipitation products in historical and operational mode and their application in weather and hydrological forecasts.

WG4 coordinates stakeholder involvement and communication with external stakeholders, the scientific community, and the broader public. It develops strategies for unlocking OS data and their uptake through stakeholder engagement.

WG5 manages internal communication, knowledge exchange and capacity building. It is also in charge of coordinating Working Group cross-activities, identifying possible synergies and thus maximizing the Actions impact.