ࡱ> ]_\ #bjbjoo $:  8$40"M;(ccc>>>0000000 35r0>>>>B0Lcc0LLLFHcc0L>0LL/60ͪB/R0<000/^!6L!6,60L60>>> o:   First IODE GE-BICH Workshop on Quality Control and Quality Assurance of Chemical Oceanographic Data Collections Oostende, Belgium, 8-11 February 2010 ANNOTATED AGENDA REMINDER TO PARTICIPANTS Come prepared and read documents on the  HYPERLINK "http://sites.google.com/site/gebichwiki/" GEBICH wiki ( HYPERLINK "http://sites.google.com/site/gebichwiki/" http://sites.google.com/site/gebichwiki/ ) prior to the workshop. It is not too late to start the discussions or to put forward ideas and suggestions via the wiki. Every participant should have access to the  HYPERLINK "http://sites.google.com/site/gebichwiki/" GEBICH wiki. Let us know asap if this is not the case. Because we want to prioritize discussion and exchange of opinion, it is neither expected nor possible that all participants make a presentation. However any participants who wish to do so should send to Gwen ( HYPERLINK "mailto:gmon@bodc.ac.uk" gmon@bodc.ac.uk) and Hernan ( HYPERLINK "mailto:Hernan.Garcia@noaa.gov" Hernan.Garcia@noaa.gov) the following: (1) presentation title (even provisional) and (2) brief outline of the presentation, highlighting in particular how it might help our discussion sessions (see below), and (3) expected duration (max 15-20 min) by not later than 15/01/2010. Presentations should address closely the specific objectives of the workshop (see our initial circular on the  HYPERLINK "http://sites.google.com/site/gebichwiki/" GEBICH wiki under Data QA/QC ( QA/QC workshop or IODEs workshop Document 4 on the IODE webpage). Useful but not required (relevant to section 1.3): If you bring a laptop, please download and install  HYPERLINK "http://odv.awi.de/en/software/download/" Ocean Data View (ODV) prior to coming to the meeting (e.g., see  HYPERLINK "http://odv.awi.de/fileadmin/user_upload/odv/misc/GettingStarted.pdf" ODV getting started document and  HYPERLINK "http://odv.awi.de/fileadmin/user_upload/odv/misc/odv4Guide.pdf" ODV User's Guide). OPENING OF THE MEETING Introduction of participants Adoption of the agenda Introduction of working documents OVERVIEW AND DISCUSSION SESSIONS: TOWARDS DEFINING A MINIMUM SET OF QA/QC PROCEDURES AND CRITERIA: EVALUATION OF EXISTING PROCEDURES AND CRITERIA Quality control checks and procedures (Part 1) Session chair: Hernan Garcia (Participants presentations to be determined). 2.1.1 What QC schemes exist at data centers? (H. Garcia to develop a list as starting point, additional discussion of QC tests in section 2.2). 2.1.2. Do we all agree on minimum and quantifiable QC checks? (e.g., what specific QC tests should be chosen? Can we recommend the adoption of a common global and basin-scale data range limits?) 2.1.3 Can we adopt an existing documented data product procedure straight away? (e.g., World Ocean Database quality control documentation procedures or similar (see  HYPERLINK "ftp://ftp.nodc.noaa.gov/pub/WOD09/DOC/wod09readme.pdf" ftp://ftp.nodc.noaa.gov/pub/WOD09/DOC/wod09readme.pdf ) see GEBICH wiki on  HYPERLINK "http://sites.google.com/site/gebichwiki/" http://sites.google.com/site/gebichwiki/ ?) Quality control checks and procedures (Part 2) Session chair: Laure Devine (Participants presentations to be determined) Discussion in section 2.2 follows from section 2.1 but will focus on criteria and QC tests which were not considered part of the minimum requirement under section 2.1 but which would be considered a desirable addition to any QA/QC procedures of nutrients and dissolved oxygen datasets. Do we all agree on what additional QC checks would be desirable? Can we use existing documented protocols? Common QC issues Session chair: Hernan Garcia (Participants presentations to be determined) This session deals with identifying, flagging, correcting, and reporting data offsets as a function of depth. H. Garcia will provide sample data sets for discussion prior to workshop using ODV) 2.3.1 Lacking universal use of O2 or nutrient certified reference materials, can we recommend a nutrient and/or O2 reference data set (e.g., climatology such as the World Ocean Atlas( HYPERLINK "http://www.nodc.noaa.gov/OC5/WOA05/pr_woa05.html" http://www.nodc.noaa.gov/OC5/WOA05/pr_woa05.html ), GLODAP ( HYPERLINK "http://cdiac.ornl.gov/oceans/glodap/Glodap_home.htm" http://cdiac.ornl.gov/oceans/glodap/Glodap_home.htm ), etc) to help identify and flag obvious questionable offsets as a function of depth (or density?) between measured chemical profiles? 2.3.2 While original data should be preserved intact, should certain data offsets be corrected as data products? And if so, how should these offset correction be reported? o Systematic offsets due to apparent unit conversion errors (most common case) o Systematic offsets due to analytical methods o Systematic offsets for no obvious reason QC flags schemes Session chair : Reiner Schlitzer (Participants presentations to be determined) 2.4.1 Pros and cons of existing schemes, building up on the results of the SeaDataNet survey. 2.4.2 Can we adopt/recommend a QC flag strategy? 2.4.3 Can we recommend a mapping between selected QC flag schemes? Units and metadata requirements for data reporting and exchange Session chair: Cyndy Chandler (Participants presentations to be determined) 2.5.1 Can we recommend an existing best practice document for data reporting and exchange? 2.5.2 Can we agree on a common reporting unit for each variable? (e.g., micromoles per liter?) 2.5.3 Units: per units volume or per units mass? What should the data centres strategy be? 2.5.4 Developing standards for data exchange (common vocabulary/ontology) WRAP-UP SESSION: RECOMMENDATION OF A MINIMUM SET OF QC CRITERIA AND PROCEDURES Session chair: Gwen Moncoiffe Quality control recommended checks and procedure QC flags recommended scheme Agreed strategy for common QC issues Recommended units and minimum metadata requirement for data reporting and exchange THE WAY FORWARD Chair(s): Gwen Moncoiffe and Hernan Garcia List of issues, knowledge gaps or needs to be addressed in the future 4.1.1 Start listing of issues not addressed in this workshop but considered important (e.g, certified standard reference materials and reference, expansion to other variables, etc) 4.1.2 Development of a white technical paper? 4.1.3 Collaborations with other initiatives elsewhere (e.g. Oceansites, GO-SHIP, ) Dissemination of results from this workshop 3.2.1 Conferences IMDIS, March 2010 EGU Vienna? AGU, December 2010 IMBER IMBIZO, Greece? 3.2.2 IODE workshop report/recommendations 3.2.3 Revision of outdated nutrient and O2 data ranges and units in IOC Manual 26 (Manual of quality control procedures for validation of oceanographic data. IOC. Manuals and Guides 26. UNESCO 1993, 352 pp.) CLOSING OF THE WORKSHOP The meeting will be closed on Thursday 11 February 2010 at 12h30.     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