1. Ship Observation Quality Control (and other updates) at the Ocean Prediction Center LT Christy Schultz Technical Operations Coordinator Ocean Prediction Center 27 August 2015 United States Port Meteorological Officers Meeting

2. Overview Importance of ship observations Importance of ship observations Ship observation quality control via CREWWS Ship observation quality control via CREWWS PMO/OPC coordination PMO/OPC coordination

3. Location, Location, Location

4. CREWSS – QC Software C ollect R eview E dit W eather data (from the) S ea S urface

5. CREWSS Flagging Criteria “Quality Control is half science and half art.” - Scott Prosise “Quality Control is half science and half art.” - Scott Prosise

6. History file shows 77.7W entered instead of 7.7W

7. Update from OPC

8. http://www.opc.ncep.noaa.gov/experimental.shtml

9. Future Opportunities Anthony.Siebers@noaa.gov Christine.Schultz@noaa.gov

10. Auxilliary Slides

11. The following slides were generated by Scott Prosise, OPC Senior Marine Forecaster and step through the QC process

12. Starting the QC Session – Global view

13. Menu Options

14. Going to the first observation …

15. Observed Model Difference

16. Keep or Reject Parameters QC Progress

17. History file shows 77.7W entered instead of 7.7W

18. 10 day history

19. Most common human error: Geographical 37N became 77N !

20. Means Another digit transposition 42.6N instead of 24.6N

21. Observation “repaired” and data saved

22. Ship GBTT is flagged for being 4.3 mb too high, … but is it?

23. NO! The history file reveals that the Queen Elizabeth 2 is a reliable observer. So…

24. The QE2 gets a “keep” flag and the model is told to analyze for the data.

25. Data from buoys … Not always perfect, but usually very reliable Average 40+ obs per day Mean of < 1.0