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An update from International Ozone Services Inc.

This update provides insights from the 13th Brewer User Workshop held in Beijing, China, from September 12-16, 2011. Key topics included the latest GWBasic Brewer operational software (version V3.78), hardware issues concerning grounding and leveling, and optical depth differences among neutral density filters. Participants were encouraged to share photos from their stations for the workshop's archive. The goal of the workshop was to enhance collaboration among Brewer users and address common operational challenges.

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An update from International Ozone Services Inc.

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  1. An update from International Ozone Services Inc. Ken Lamb, Volodya Savastiouk and Martin Stanek 13th Brewer User Workshop. Beijing, China September 12-16, 2011

  2. Ken Lamb and his wife Nettie sends their best regards to all participants of the workshop! 13th Brewer User Workshop. Beijing, China September 12-16, 2011

  3. www.io3.ca 13th Brewer User Workshop. Beijing, China September 12-16, 2011

  4. ReportPro 13th Brewer User Workshop. Beijing, China September 12-16, 2011

  5. GWBasic Brewer operational software • The latest version is V3.78: • More information is saved • A useful, 2-letter, command to restart the last schedule • Many bugs (problems) fixed • Hopefully not very many new problems introduced • This version is now posted at www.io3.ca 13th Brewer User Workshop. Beijing, China September 12-16, 2011

  6. Hardware issues: • Grounding: • Make sure you have grounded power cable and the ground wire is connected properly to inside the tracker • Leveling • Sighting • After you properly leveled and sighted the instrument, your sighting constants (the north and the horizon corrections) should stay more-or-less constant. If you see these two values need big adjustments then maybe something else is not right. 13th Brewer User Workshop. Beijing, China September 12-16, 2011

  7. 13th Brewer User Workshop. Beijing, China September 12-16, 2011

  8. Back to the website: • We also have a photo-album with photos going back to 1984 • If for one reason or another we do not have photos from your stations, please send us some and we will be happy to post them for everybody to enjoy 13th Brewer User Workshop. Beijing, China September 12-16, 2011

  9. Thank you! 13th Brewer User Workshop. Beijing, China September 12-16, 2011

  10. 13th Brewer User Workshop. Beijing, China September 12-16, 2011

  11. 13th Brewer User Workshop. Beijing, China September 12-16, 2011

  12. 13th Brewer User Workshop. Beijing, China September 12-16, 2011

  13. Nominal (expected) optical depth difference between neutral density filters is 0.5 (base 10) For example, the attenuation by filter 3 is supposed to be approximately 3 times less than the attenuation by filter 4 10^0.5=sqrt(10)=3.16 In Brewer #126 this ratio is 4.5. This means that at some solar angles intensity that the Brewer sees with filter 3 is too bright for the standard criteria and it is too dim with filter 4. Normally, there is a short period when the software alternates the filters. Some Brewers with such a situation with filters will benefit from increased overlap scenario when the filters are alternating. For this to work well, the dead time must be know very accurately since the maximum photon count rate will increase, which leads to more sensitivity to errors in the dead time. 13th Brewer User Workshop. Beijing, China September 12-16, 2011

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