Expert Team on Radiation References (ET-RR)

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Terms of Reference

Purpose: assess the status of the solar and terrestrial radiation references, address implications of proposed changes to those references and making recommendations on a timely implementation of reference changes.
ToR:

Under the direction of the Chair of INFCOM/SC-MINT, the Expert Team on Radiation References (ET-RR) shall undertake tasks and provide advice on and support for the implementation of the WIGOS framework and the priorities of the WMO Strategic Plan ( 2024-2027), in accordance with the SC-MINT Terms of Reference; it will in particular assess the current status of the solar and terrestrial radiation references and address implications of proposed changes to those references, by:
1. Reviewing and reporting to SC-MINT on the recent developments of reference instruments for solar and terrestrial radiation with regard to observed differences to references currently in use.
2. Assessing the status of the World Standard Group and of the World Infrared Standard Group.
3. Assessing potential impact and consequences of a change in solar/terrestrial reference scales for stakeholders.
4. Making recommendations on requirements and timeliness for a modification of the current references, and if required develop an implementation plan for the change (including proposing how to deal with old data and timelines for its introduction).
5. Developing regulatory and guidance material related to the reference change.
6. Reviewing and updating relevant parts of the WMO Guide to Instruments and Methods of Observation (WMO-No. 8), and other WMO guidance and regulatory publications, as necessary.
7. Contributing to the review and development of international standards related to ET activities in collaboration with ISO, as required/appropriate.

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