This document provides the Final Report of the 15 th Session of the WMO AMDAR Panel, which, was also the final Meeting of the Panel, having agreed to hand over full programmatic management and governance of the Aircraft-based and AMDAR observing systems to WMO and its Technical Commissions, CBS and CIMO. Most importantly, Members should be aware that this does not mean the end of AMDAR related developmental activities and there remains a strong need to continue supporting the work programme of the WMO Aircraft-based Observations programme. This programme will be managed jointly by a CBS Expert Team on Aircraft-based Observations (ET-ABO) and a CIMO Task Team (TT), supported by the AMDAR Trust Fund and having responsibility for carrying forward the work of the AMDAR Panel which includes critical activities and actions based on the CBS Implementation Plan for Evolution of the GOS. In addition to reviewing the current status of the Global AMDAR Observing System formed from its component national and regional AMDAR Programmes, the Session also reviewed, discussed and updated plans for ongoing and new work activities associated with AMDAR system expansion to Regions I and III and other data-sparse areas, water vapour measurement implementation, turbulence measurement, AMDAR software standardization and development, data and metadata management, training and outreach, data quality issues and impact of AMDAR data.
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