The Expert Team on Quality, Traceability and Calibration (ET-QTC), under SC-MINT/INFCOM, develops guidance, regulatory, and training material to ensure global traceability of measurements to international standards. The team assesses the compliance and performance of Regional Instrument, Marine Instrument, and Radiation Centres, strengthens their quality management, promotes inter-collaboration, supports interlaboratory comparisons, develops training and workshops, updates relevant WMO guidance (including WMO-No. 8), and advises on measurement quality for World Records of Weather and Climate E...