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GCOS Reference Upper Air Network: development and plans

The GCOS Upper Air Network (GUAN) is focused on enhancing global upper air measurements, with developments led from the Lindenberg Lead Centre in Germany. Currently, 15 initial global sites utilize a mix of instrumentation across various climatic zones. Significant progress includes defining GRUAN reference measurements, ensuring data tracing and uncertainty estimates, and developing a manual of operations. Future plans entail GRUAN measurements for RS92 and CFH/FPH soundings, expanded remote sensing capabilities, and addressing key scientific questions through increased network expansion and data retention.

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GCOS Reference Upper Air Network: development and plans

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  1. GCOS Reference Upper Air Network: development and plans

  2. Progress to date • Measurement requirements set • Lead Centre instigated at Lindenberg, Germany • 15 initial sites globally • Mixed instrumentation capabilities • Different climatic zones • Definition of GRUAN reference measurement published in peer reviewed literature • Estimate + uncertainty (all known systematics removed, tracability) • Based on Guide to Uncertainty in Measurements

  3. Future plans • Near term (next 6-12 months) • GRUAN measurements for in situ RS92 soundings served through NCDC and reprocessed to extent possible. • GRUAN measures for CFH/FPH soundings to follow • Collection and retention of raw data for remaining observations at all stations (locally or centrally) to allow future reprocessing. Data may be available for use but does NOT presently constitute a GRUAN measure. • Completion of manual of operations • Longer term • Expansion of GRUAN measures to remote sensing capabilities (GNSS-IWV, Lidar, FTIR etc.). • Expansion of network • Resolving remaining science questions • Scheduling • Collocation of measures • Etc.

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