GRUAN Implementation Plan 2017-2021
World Meteorological Organization (WMO)
This document provides a roadmap for implementation of the Global Climate Observing System (GCOS) Reference Upper-Air Network (GRUAN) for the period 2017 to 2021, detailing the high-level actions required to reach the goal of establishing a fully operational reference upper-air network for climate. It also highlights potential pathways by which GRUAN could aid implementation of various actions arising within the latest GCOS Implementation Plan (GCOS-200). It serves as an update to, and supersedes, the previous GRUAN Implementation Plan (GCOS-165). It should be interpreted in conjunction with the GRUAN Manual and Guide (GCOS 170 and 171 respectively). The new GRUAN IP consists of fewer, more high-level, objectives than previous GRUAN Implementation Plans and shall leave the mapping of specific action items to achieve these to the annual Implementation and Coordination Meetings mechanism.