Expert Team on Upper-air Measurement (ET-UAM)
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Terms of Reference
Under the direction of the Chair of INFCOM/SC-MINT, the Expert Team on Upper-air Measurement (ET-UAM) shall undertake tasks and provide advice on and support for the implementation of the WIGOS framework and the priority activities of the WIGOS operational phase 2020-2023, in accordance with the SC-MINT Terms of Reference for upper-air measurements1 (apart from those obtained from weather radars and aircraft-based measurement systems); in particular:
1. Develop and maintain guidance material, best practices, standards and specifications related to upper-air measurements and related technologies to meet requirements from Members. (Specific needs were identified for measurements with passive microwave profilers; interference between radar wind profilers and wind farms; IWV profiling.)
2. Contribute to identification and development of common WMO-ISO standards related to ET activities (for example, standards on radar wind profilers and lidars).
3. Regularly review, and update as required, relevant parts of WMO-No. 8 and other WMO guides related to upper-air measurements and instrumentation, and ensure consistency with WIGOS regulatory and other guidance material.
4. Review and publish performance results and recommendations relating to state-of-the-art operational upper-air measurement technologies, their calibration, measurement methods and required supporting infrastructure.
5. Monitor, investigate and report on the performance of emerging upper-air measurement technologies and techniques, including low-cost technologies.
6. Promote developments related to instruments, measurement techniques and methods of upper-air variables, in liaison with the Association of Hydro-Meteorological Equipment Industry, National Meteorological and Hydrological Services and other relevant scientific institutions.
7. Review outcomes of the Testbeds and Lead Centres (TBs/LCs) assigned to this Expert Team, and in collaboration with the TBs/LCs, coordinate timely publication of guidance material on best practices and of training material in WMO publications.
8. Monitor, review and assist regional and national intercomparisons of upper-air instrumentation. Ensure that relevant findings from these intercomparisons are included in updated guidance material.
1. Develop and maintain guidance material, best practices, standards and specifications related to upper-air measurements and related technologies to meet requirements from Members. (Specific needs were identified for measurements with passive microwave profilers; interference between radar wind profilers and wind farms; IWV profiling.)
2. Contribute to identification and development of common WMO-ISO standards related to ET activities (for example, standards on radar wind profilers and lidars).
3. Regularly review, and update as required, relevant parts of WMO-No. 8 and other WMO guides related to upper-air measurements and instrumentation, and ensure consistency with WIGOS regulatory and other guidance material.
4. Review and publish performance results and recommendations relating to state-of-the-art operational upper-air measurement technologies, their calibration, measurement methods and required supporting infrastructure.
5. Monitor, investigate and report on the performance of emerging upper-air measurement technologies and techniques, including low-cost technologies.
6. Promote developments related to instruments, measurement techniques and methods of upper-air variables, in liaison with the Association of Hydro-Meteorological Equipment Industry, National Meteorological and Hydrological Services and other relevant scientific institutions.
7. Review outcomes of the Testbeds and Lead Centres (TBs/LCs) assigned to this Expert Team, and in collaboration with the TBs/LCs, coordinate timely publication of guidance material on best practices and of training material in WMO publications.
8. Monitor, review and assist regional and national intercomparisons of upper-air instrumentation. Ensure that relevant findings from these intercomparisons are included in updated guidance material.
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