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Learn about the importance of ship observations and quality control procedures using CREWWS at the Ocean Prediction Center. Explore how PMO/OPC coordination enhances weather data accuracy, and get insights into the QC process. Discover the art and science of quality control from experts. Visit the OPC website for future opportunities and contact information. Enhance your understanding of maritime data collection and analysis.
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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
Overview • Importance of ship observations • Ship observation quality control via CREWWS • PMO/OPC coordination
CREWSS – QC Software Collect Review Edit Weather data (from the) Sea Surface
CREWSS Flagging Criteria “Quality Control is half science and half art.” - Scott Prosise
Update from OPC http://www.opc.ncep.noaa.gov/experimental.shtml
Future Opportunities Anthony.Siebers@noaa.gov Christine.Schultz@noaa.gov
The following slides were generated by Scott Prosise, OPC Senior Marine Forecaster and step through the QC process
Observed Model Difference
Keep or Reject Parameters QC Progress
Most common human error: Geographical 37N became 77N !
Means Another digit transposition 42.6N instead of 24.6N
Observation “repaired” and data saved
Ship GBTT is flagged for being 4.3 mb too high, … but is it?
NO! The history file reveals that the Queen Elizabeth 2 is a reliable observer. So…
The QE2 gets a “keep” flag and the model is told to analyze for the data.
Data from buoys … Not always perfect, but usually very reliable Average 40+ obs per day Mean of < 1.0