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WMO/UNEP Dobson Data Quality Workshop

Hradec Kralove, Czech Republic, February 14-18, 2011

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Data re-evaluation and Data Quality Workshop of Dobson Measurements

2011.03.01

 

Systematic observation of atmospheric ozone is a key task relevant to the Vienna Convention that is supported by the World Meteorological Organization (WMO) in the frame of the Global Atmosphere Watch Programme (GAW) and assisted by the “Network for the Detection of Atmospheric Composition Change” (NDACC).. For adequate evaluation of the effectiveness of the Montreal Protocol high quality column ozone measurements are very important. Continued maintenance and calibration of instruments at the ground-based GAW and NDACC total ozone monitoring stations are the basic areas of the assistance provided by the WMO. Recent analyses presented by the GAW Scientific Advisory Group for Ozone (SAG-O3) have shown that these activities also ought to include a better implementation of data quality procedures in the network and a thorough evaluation of past measurements. This concerns especially the Dobson total ozone observations. On the basis of this finding it was recommended at the 7th Meeting of the Ozone Research Managers of the Parties to the Vienna Convention, Geneva, 2008, that a technological workshop should be organized to bring together managers of the archive data sets and provide guidance on how to re-evaluate and  reprocess some important past data sets. This should be arranged under the assistance of the SAG-O3 and supported by the Vienna Convention Trust Fund on Research and Systematic Observations. This web site provides the visitors information about organization and agenda of the Workshop that was held in the Conference Center “Nove Adalbertinum”, www.noveadalbertinum.cz, in Hradec Kralove, Czech Republic in the period February 14-18, 2011.

 

On the recommendation of the SAG-O3 any institution was invited to nominate an expert responsible for processing of the Dobson observations and maintenance of the data base of its station (s) to participate in the Workshop. The organizers expected that the digitized historical 0-level (primary) data, SL and HG lamp test data of the Dobson instruments from participating stations would be available for the discussions concerning their quality and transferred to the WOUDC.

 

 

Summary of basic Achievements

 

Ø  31 participants from 20 countries attended the Workshop

Ø  21 data managers of 51 Dobson stations were present

Ø  The above represent about 75% of the currently active GAW Dobson stations

Ø  25 expert and on-demand oral presentations were given

Ø  A big amount of the primary (0-level) data and the lamp-test records have been collected by the WOUDC manager

Ø  Summary of the Workshop will be presented at the “8-th Ozone Research Managers Meeting”, Geneva, May 2-4, 2011

Ø  The final Report will be prepared and published as the GAW paper in 2011

Ø  Summary and next steps see Bob´s presentation: endingpresentation.pdf

 

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