CWOP Data Quality Results

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How to Check the Quality of Data from your Weather Station

1. Quality checking results and discussion by e-mail

Philip, CW0003, operates an on-line analysis and display system of the MADIS quality checking results for registered CWOP stations located in North America. In addition to on-line displays and lists, he can send you a summary of your quality checking results by e-mail if you sign up below.

• On-line sign-up form
• Site meta data - use 5 character ID
• Average performance of CWOP stations - use 5 character ID
• Individual station quality checking
• Equipment types in use
• Summary checks
• CWOP Barometer Miscalibration Report
• CWOP Altitude/Location Error Page
• Registered vs USGS Elevations
• Stuck Station Report
• Add Pictures of your Station

Philip has also set-up an e-mail reflector discussion list for CWOP quality checking. To join this list, send an e-mail to "wxqc-subscribe@lists.gladstonefamily.net" (without the quotes). This list will build up an archive that should contain a lot of pertinent information on the CWOP quality checking.

George Allen, DW2257, has put together an excellent summary of the Quality Checking services provided by CWOP. This is a must-read.

2. Quality Checking Summary Information

Current quality checking summaries for CWOP stations in the USA can be seen at QC Summary Messages. These summary files provide quality checking information for each station over hourly, daily, weekly and monthly time scales. The Summary Message Description explains the format and tells how to interpret the summary messages. The QCMS Overall Description tells how each each of these quality checking procedures are done and how the summary files are produced.

3. Daily Quality Checking Results

These are stored versions of the Daily QC Summary Infomation from number 1 above. They cover 0000 to 2359 UTC for the day previous to the compilation date indicated in the file name. These files allow you to look back in time and see if your station had similar results in the past. There is always a lot of variation in weather related items. So, when evaluating your weather station, don't just look at a single day. Look over many days and see if there are patterns.