1. 2011 National Air Quality Conferences March 7 - 10, 2011 Development of the USEPA Quality Assurance Guidance for the Collection of Meteorological Data Using Passive Radiometers Robert A. Baxter, CCM T&B Systems, Inc. Herman Wong Robert Elleman USEPA Region 10

2. 2011 National Air Quality Conferences March 7 - 10, 2011 Overview Background Guidance development process Contents Completion of the document

3. 2011 National Air Quality Conferences March 7 - 10, 2011 Background EPA meteorological guidance documents –2000 Meteorological Monitoring Guidance for Regulatory Modeling Applications Updating the “On-Site Guidance” –2008 Quality Assurance Handbook for Air Pollution Measurement Systems, Volume IV: Meteorological Measurements Provided updates to work performed by Lockhart and others detailing QA fundamentals and procedures Need for additional remote sensing instrumentation guidance

4. 2011 National Air Quality Conferences March 7 - 10, 2011 Instrumentation Profiling radiometers –Passive measurement technique –Continuous measurement profiles –Temperature, humidity and liquid water profiles

5. 2011 National Air Quality Conferences March 7 - 10, 2011 Guidance Development Process 1.Develop a first draft document based on principles in the existing documents 2.Implement the draft guidance in a real-world application 3.Observe the measurement and QAPP development process 4.Observe the implementation of the guidance measurement and QA process 5.Modify the guidance based on the observations 6.Obtain a peer review of the final draft document 7.Finalize the guidance document

6. 2011 National Air Quality Conferences March 7 - 10, 2011 Document Contents 1.Fundamentals 2.Performance Characteristics 3.Monitoring Goals and Objectives 4.Siting and Exposure 5.Installation and Acceptance Testing 6.Quality Assurance and Quality Control 7.Data Processing and Management 8.Recommendations for Data Collection 9.References

7. 2011 National Air Quality Conferences March 7 - 10, 2011 Document Contents 1.Fundamentals 2.Performance Characteristics 3.Monitoring Goals and Objectives 4.Siting and Exposure 5.Installation and Acceptance Testing 6.Quality Assurance and Quality Control 7.Data Processing and Management 8.Recommendations for Data Collection 9.References

8. 2011 National Air Quality Conferences March 7 - 10, 2011 Document Contents Fundamentals Operation is based on the principle that all matter with a temperature other than absolute zero emits microwave radiation The spectrum and intensity is determined by the physical temperature and structure of the matter Temperature  50 – 60 GHz Oxygen absorption Specific frequency determines the effective volume of the measurement

9. 2011 National Air Quality Conferences March 7 - 10, 2011 Document Contents Fundamentals Single Channel Elevation Scanning Multiple Channel

10. 2011 National Air Quality Conferences March 7 - 10, 2011 Document Contents Fundamentals Scanning single channel

11. 2011 National Air Quality Conferences March 7 - 10, 2011 Document Contents Fundamentals Scanning single channel

12. 2011 National Air Quality Conferences March 7 - 10, 2011 Document Contents Fundamentals Scanning single channel

13. 2011 National Air Quality Conferences March 7 - 10, 2011 Document Contents Fundamentals Scanning single channel

14. 2011 National Air Quality Conferences March 7 - 10, 2011 Document Contents Fundamentals Scanning single channel

15. 2011 National Air Quality Conferences March 7 - 10, 2011 Document Contents Fundamentals Scanning single channel

16. 2011 National Air Quality Conferences March 7 - 10, 2011 Document Contents Fundamentals Scanning single channel

17. 2011 National Air Quality Conferences March 7 - 10, 2011 Document Contents Fundamentals Scanning single channel

18. 2011 National Air Quality Conferences March 7 - 10, 2011 Document Contents Fundamentals Scanning single channel

19. 2011 National Air Quality Conferences March 7 - 10, 2011 Document Contents Fundamentals Scanning single channel

20. 2011 National Air Quality Conferences March 7 - 10, 2011 Document Contents Fundamentals Multi-channel 1 56 7 234 Sfc Channel

21. 2011 National Air Quality Conferences March 7 - 10, 2011 Document Contents Fundamentals Multi-channel 1 56 7 234 Sfc Channel

22. 2011 National Air Quality Conferences March 7 - 10, 2011 Document Contents Fundamentals Multi-channel 1 56 7 234 Sfc Channel

23. 2011 National Air Quality Conferences March 7 - 10, 2011 Document Contents Fundamentals Multi-channel 1 56 7 234 Sfc Channel

24. 2011 National Air Quality Conferences March 7 - 10, 2011 Document Contents Fundamentals Multi-channel 1 56 7 234 Sfc Channel

25. 2011 National Air Quality Conferences March 7 - 10, 2011 Document Contents Fundamentals Multi-channel 1 56 7 234 Sfc Channel

26. 2011 National Air Quality Conferences March 7 - 10, 2011 Document Contents Fundamentals Multi-channel 1 56 7 234 Sfc Channel

27. 2011 National Air Quality Conferences March 7 - 10, 2011 Document Contents Fundamentals Multi-channel 1 56 7 234 Sfc Channel

28. 2011 National Air Quality Conferences March 7 - 10, 2011 Document Contents Fundamentals Multi-channel 1 56 7 234 Sfc Channel

29. 2011 National Air Quality Conferences March 7 - 10, 2011 Document Contents Fundamentals Multi-channel 1 56 7 234 Sfc Channel

30. 2011 National Air Quality Conferences March 7 - 10, 2011 Quality Assurance and Quality Control Calibration methods System and performance audits Standard operating procedures Operational checks and preventive maintenance Corrective action and reporting

31. 2011 National Air Quality Conferences March 7 - 10, 2011 Quality Assurance and Quality Control Calibration methods System and performance audits Standard operating procedures Operational checks and preventive maintenance Corrective action and reporting

32. 2011 National Air Quality Conferences March 7 - 10, 2011 Performance Audits Not amenable to traditional “hands-on” type standards comparison Techniques for RASS –Tethered sonde –Radiosonde

33. 2011 National Air Quality Conferences March 7 - 10, 2011 Performance Audits Not amenable to traditional “hands-on” type standards comparison Techniques for RASS –Tethered sonde –Radiosonde

34. 2011 National Air Quality Conferences March 7 - 10, 2011 Performance Audits Not amenable to traditional “hands-on” type standards comparison Techniques for RASS –Tethered sonde –Radiosonde

35. 2011 National Air Quality Conferences March 7 - 10, 2011 Performance Audits Performance evaluation criteria –Quantifiable differences between the two systems –Assessment of the detection of significant inflections in the profiles –Assessment of the accuracy of the reported lapse rates Assess the significance of the comparisons not meeting the suggested criteria

36. 2011 National Air Quality Conferences March 7 - 10, 2011 Performance Audits

37. 2011 National Air Quality Conferences March 7 - 10, 2011 Performance Audits

38. 2011 National Air Quality Conferences March 7 - 10, 2011 Summary Profiling radiometers provide a continuous measure of temperature profiles The resulting data may not match what is obtained from a radiosonde Important to understand if the differences are significant Assess the value of continuous measurements versus infrequent or derived data from other sources Given the above, the document provides guidance for users on the operation, quality assurance, quality control and data validation of information obtained from profiling radiometers

39. 2011 National Air Quality Conferences March 7 - 10, 2011 Process Completion 1.Develop a first draft document based on principles in the existing documents 2.Implement the draft guidance in a real-world application 3.Observe the measurement and QAPP development process 4.Observe the implementation of the guidance measurement and QA process 5.Modify the guidance based on the observations 6.Obtain a peer review of the final draft document 7.Finalize the guidance document

40. 2011 National Air Quality Conferences March 7 - 10, 2011 Process Completion 1.Develop a first draft document based on principles in the existing documents 2.Implement the draft guidance in a real-world application 3.Observe the measurement and QAPP development process 4.Observe the implementation of the guidance measurement and QA process 5.Modify the guidance based on the observations 6.Obtain a peer review of the final draft document 7.Finalize the guidance document

41. 2011 National Air Quality Conferences March 7 - 10, 2011 Development of the USEPA Quality Assurance Guidance for the Collection of Meteorological Data Using Passive Radiometers Robert A. Baxter, CCM T&B Systems, Inc. Herman Wong Robert Elleman USEPA Region 10