1. Global Climate Observing System Ozone Research Managers’ Meeting David Goodrich Director, GCOS Secretariat World Meteorological Organization

2. Outline uGCOS Overview uGCOS and GAW Ozone Networks uReport to UNFCCC and Second Edition Implementation Plan uGCOS Reference Upper Air Network: Progress to Date

3. Global Climate Observing System Mission: To ensure that the data required to meet the needs of users for climate information are obtained and made available for: uClimate system monitoring, climate change detection and attribution; uResearch, modelling and prediction of the climate system; uAssessing impacts, vulnerability & adaptation; uApplication to sustainable economic development. Global, long-term, high-quality, sustainable, reliable, …

4. Global Climate Observing System (GCOS) WMO World Hydrological Cycle Observing System (WHYCOS) Land/Water FAO Global Terrestrial Observing System (GTOS) Land WMO Global Atmospheric Watch (GAW) Atmospheric Chemistry WMO WWW Global Observing System (GOS) Atmosphere IOC/ UNESCO Global Ocean Observing System (GOOS) Ocean GCOS is comprised of climate components of various global observing systems including both satellite and in situ observations Other WCRP/GEWEX BSRN

5. Recent GCOS Actions on GAW Ozone Networks u GCOS Steering Committee (October 2007) recognized: l GCOS Global Baseline Total Ozone Monitoring Network l GCOS Global Baseline Ozone Profile Network u Atmospheric Observation Panel for Climate (AOPC, April 2007): l Recognized high data reception rates for GAW ozone networks l Recommended one-stop point for submission and access to data

6. GCOS Implementation Plan (2004) u Responds to UNFCCC request to develop an implementation plan that considers: l Requirements in the ‘Second Adequacy Report’; n Essential Climate Variables (ECVs) n Integrated global analysis products l Views of Parties with respect to that report; l Existing global, regional and national plans; l Open review by broad range of scientists and data users; l Indicators for measuring implementation; l Implementation priorities and resource requirements. u Identified as the Climate component of the Global Earth Observing System of Systems (GEOSS)

7. Ensuring the Satellite Climate Record Scientific Requirement Definition –Preparation of GCOS “Satellite Supplement” (2006) –Ongoing Scientific Interaction Satellite Agency Coordination –Committee on Earth Observation Satellites Formal CEOS response to UNFCCC –Coordination Group for Meteorological Satellites Objective: Stable, Calibrated Satellite- based Climate Products –An interruption in a national satellite contribution should not mean a failure in the Climate Record

8. UN Framework Convention on Climate Change GCOS-Related Actions - 2007 uAdopted the revised UNFCCC reporting guidelines on global climate observing systems uInvited Parties to submit to GCOS Secretariat “additional information” on observing systems by 15 Sept. 2008, using these guidelines uRequested CEOS report on satellite observations for climate in December 2009 uUrged Parties implement GCOS Regional Action Plans uRequested comprehensive report on GCOS implementation in June 2009 (restated)

9. Reconsidering the Observing System: Toward a GCOS “Comprehensive Report” Lessons from IPCC (2007) GCOS Performance Monitoring Data GCOS “Comprehensive Report” (2009) “National Activities” Information (2008) Steering Committee, Science Panels, Partner OS Inputs Reporting Guidelines(2007) Done

10. GCOS Reference Upper Air Network Rationale u Motivation Problems for climate in accuracy, long-term stability Changes in measurement systems u Objectives Provide long-term, high-quality climate records Constrain/calibrate data from more spatially- comprehensive global observing systems (including satellites) Measure large suite of co-related climate variables

11. Proposed Observing System Architecture Benchmark Network ~10 stations Upper Air Reference Network 30-40 stations GCOS Upper Air Network (GUAN) 163 stations Comprehensive observing network All stations, observing systems, reanalyses etc. Spatial density Climate driven

12. GRUAN Progress to Date u Climate Requirements Established: Boulder Workshop 2005 u Instrumentation/Siting Options Assessed: Seattle Workshop 2006 u Report on Requirements, Siting, Instrumentation: July 2007 u Lindenberg designated as Lead Centre; Director Holger Voemel u Initiation Meeting at Lindenberg 25-28 February: “Start small, but start” u Community Presentations WMO CIMO, CBS groups WCRP Observations and Analysis Panel GCOS Atmospheric Observation Panel for Climate AMS Ozone Research Managers u Lindenberg Report to be released; Invitations to stations

13. Proposed Site Instrumentation Level 1 (Highest Priority) Measurements l Standard surface variables (pressure, temperature, humidity and wind) l Redundant / simultaneous measurement of temperature and water vapor l Pressure and GPS / radar height l Ground-based GPS receivers (column water vapor) Level 2 Measurements l Surface radiation (BSRN suite) l Microwave radiometer (temperature/moisture profile) l Multi-channel infrared radiometer (such as AERI; temperature and humidity properties and cloud retrieval) l Integrated trace gas (at least ozone) measurements l Column aerosol measurements from sunphotometers

14. Proposed Initial GRUAN Sites Darwin, Australia Xilin Hot, China Sodankyla, Finland Lindenberg, Germany Potenza, Italy Cabauw, Netherlands Lauder, New Zealand Payerne, Switzerland Barrow, USA Beltsville, USA Boulder, USA Lamont, USA Italics: GAW Ozone Profiling Stations