1. 1 Climate Absolute Radiance and Refractivity Observatory (CLARREO) Welcome David Young Project Scientist CLARREO Mission Formulation Team NASA Langley Research Center May 12, 2009

2. 2 Welcome  David Young  CLARREO Mission Formulation Project Scientist  Calvin Lowe  Vice President of Research & Programs Development, National Institute of Aerospace  Ken Jucks  Acting CLARREO Project Scientist  Richard Slonaker  CLARREO Program Executive

3. 3 Meeting Goals and Objectives  Discuss and obtain agreement upon the mission-defining science requirements  Determine critical science questions and/or remaining studies needed to finalize for MCR, with schedule for completion  Determine observation requirements and/or remaining studies needed to finalize for MCR, with schedule for completion  Provide an opportunity for coordination between the mission engineering team and the science team  Provide clear understanding of the decision-making process

4. 4 NASA Implementation Chronology  01 / 07Decadal Survey Released  07 / 07First CLARREO Workshop  08 / 07Initial NASA Cost Estimate (Team X)  09 / 07Ad Hoc Science Team Formed  05 / 08 Official start of NASA Implementation  05 / 08First Science Team Meeting  10 / 08Second CLARREO Workshop  Fall 08Work on science objectives and requirements  01 / 09CLARREO solar workshop  01-05 / 09Review of key results  05 / 09Second Science Team meeting

5. 5 5 Team Progress: CLARREO Imperative  Initiate an unprecedented, high accuracy record of climate change that is tested, trusted and necessary to provide sound policy decisions.  Initiate a record of direct observables with the high accuracy and information content necessary to detect long term climate change trends and to test and systematically improve climate predictions.  Observe the SI traceable spectrally resolved radiance and atmospheric refractivity with the accuracy and sampling required to assess and predict the impact of changes in climate forcing variables on climate change.

6. 6 Team Progress: Key Science Results  Clarification of science objectives  Focus on decadal scale change  Major progress on all-sky IR benchmarking  Solar  Beginning of solar OSSEs for defining benchmark  Key results on information content of a radiance record  Major progress on intercalibration approach  Identification of polarization issues  Detailed analysis of alternative orbit sampling

7. 7 What We Need  Draft Level 1 requirement document at MCR  Clearly defined science objectives  Clearly defined flowdown to observation requirements  Close in the IR and GPS  Need this for solar

8. 8 How We Get There  Process  Set the context for mission implementation  Review current status of the CLARREO science questions and observation requirements  Review strawman mission architecture  Summarize current understanding and identify issues  Expected Result  Reach a decision on as many draft requirements as possible  Document all input concerning outstanding issues and disagreements  Identify near term actions required to resolve outstanding issues  Identify critical trades for Phase A  Next Step  Team will generate draft Level 1 Requirements document

9. 9 Day 1 Agenda

10. 10 Day 1 Goals  Set the context for the science requirement discussion  HQ Perspective  Project perspective  MCR requirements  Science definition status  Mission Engineering  Open discussion of concerns and expectations for this mission  What are the biggest risks to a successful mission?  How do we mitigate these risks?  Provide clear understanding of the decision-making process

11. 11 Final Thoughts  Ground Rules  Recognize common goals  Commitment to getting it right  Be constructive “Many are stubborn in pursuit of the path they have chosen, few in pursuit of the goal” – F. Nietzsche

12. 12 SDT Solicitation  Coming out this summer  Will formally compete the Science Definition Team

13. 13 Logistics  Lunch  We will take orders and have the food delivered  Team Dinner Wednesday night  Past presentations available using hyperlinked document

14. 14 Backups

15. 15 Day 2 Agenda

16. 16 Day 3 Agenda

17. 17 Day 4 Agenda