ࡱ> xzw` $bjbjss hD9< < < < < < < $` ,(,(,(P|(D(4` p)LL)p)))*+<+ =j?j?j?j3rjVm:p$arht^p< /**//^p< < ))4sp222/< )< )=j2/=j22Qe< < !i)( P,(/p9hPip0phu0u!iu< !i,,2v-|-),,,^p^p=1,,,p////` ` d d ` ` ` ` ` < < < < < <   WORLD METEOROLOGICAL ORGANIZATION ________________________  INTERGOVERNMENTAL OCEANOGRAPHIC COMMISSION (OF UNESCO) ________________________ JOINT WMO/IOC TECHNICAL COMMISSION FOR OCEANOGRAPHY AND MARINE METEOROLOGY (JCOMM) WATER TEMPERATURE METADATA (META-T) PILOT PROJECT SECOND WORKSHOP GENEVE, SWITZERLAND, 16 - 17 SEPTEMBER 2008META-T/Doc.  FORMTEXT 4(2) __________ ITEM:  FORMTEXT 4 Original: ENGLISH Project Status (Submitted by  FORMTEXT the Secretariat) Appendix: None Water Temperature instrumental Metadata Pilot Project (META-T) 1. The third session of the JCOMM Data Management Coordination Group (Ostend, March 2008) noted with appreciation that the META-T Pilot Project has made some progress in recent months ( HYPERLINK "http://marinemetadata.org/meta-t" http://marinemetadata.org/meta-t). Bill Burnett has been elected to co-Chair the META-T Steering Team with Ms Elanor Gowland. META-T has had active discussions on what information is required to travel with the data, and what is relatively static and so can be housed and referenced separately. The work of META-T crosses over into Ocean Data Acquisition Systems (ODAS) metadata developments, because a database of ODAS metadata (instrument characteristics) is being hosted at the National Marine Data and Information Service (NMDIS, China). META-T also links to the further development of BUFR templates, since it is partly through these templates that the metadata will be transmitted with the data. There are active email discussions between members of the JCOMM Observations and the Data Management Programme Areas, the WMO secretariat and input from the CBS Expert Team on Data Representation and Codes (ETDRC). 2. The Water Temperature metadata pilot project is aiming at providing an international standardization framework for collecting SST and water temperature profile instrumental metadata from a number of marine observational systems, including drifting and moored buoys, observing ships, sea level stations, sub-surface profiling floats, ocean reference stations, and ODAS. It is being developed under the umbrella of the Joint WMO-IOC Technical Commission for Oceanography and Marine Meteorology (JCOMM). 3. The Project is considering all in situ ocean observing systems providing water temperature data in real time and/or delayed mode to the operational and research, oceanographic and meteorological communities. These include drifting and moored buoys, ship based observations, including from ships of opportunity, Argo profiling floats, tide gauges, Ocean Data Acquisition Systems, deep ocean timeseries reference stations (OceanSITES), etc. Collected metadata are addressing a wide range of applications including Numerical Weather Prediction (NWP), SST analysis and GODAE High Resolution SST Pilot Project (GHRSST), data assimilation and ocean field analysis, ocean modeling, ocean modelling validation, climate forecast, seasonal to decadal climate variability, satellite calibration and validation, operational activities (e.g. weather forecasters, disaster response), quality assurance activities serving above applications, and diagnostic by platform operators. 4. The Pilot Project has proposed three categories for the instrumental metadata from the types of platforms currently under consideration: 1) real-time with observations (push); 2) real-time via metadata servers (pull), and 3) delayed mode, as well as the mechanisms to make the SST and/or temperature profile metadata available in real time. The NOAA National Data Buoy Centre (NDBC), USA, and NMDIS, China, have offered to develop and run mirrored metadata servers for category 2 metadata. Work remains to set up the META-T servers at both the NMDIS and NDBC and agree on the communication between the two centres for mirroring the metadata servers (category 1 and 2 metadata). DMCG-III noted that the category 1 metadata were by definition available via the observational reports (e.g. probe type in XBT, call sign, kind of profiling float) and that the main challenge for the end users was therefore accessing category 2 metadata. DMCG-III invited NMDIS and NDBC to address collecting category 2 metadata as a priority while category 1 metadata can still be made available via the META-T servers. 5. Specific data streams have been considered (e.g. drifting buoys, ships, floats, etc.) and the categorization of related metadata types initiated. Good progress was made regarding the VOS data stream and the list of category 1 metadata for the VOS template is completed. DMCG-III agreed with the VOS list proposed by META-T. The XBT fall rate workshop (Miami, 10-12 March 2008) discussed META-T requirements for XBT data, including for BUFR template, has set up a small task team who succeeded in developing an appropriate list of metadata. 6. META-T now appears to be in a position to make recommendations to the JCOMM cross cutting Task Team on Table Driven Codes in order to take the META-T requirements for category 1 metadata into account when defining requirements for the BUFR templates for VOS and XBT data. 7. However, just the process of developing and reviewing the VOS list within META-T has highlighted these interrelated issues: The high complexity and some apparent inflexibility in BUFR, which has hampered to some extent wide and effective review by users involved in META-T. The possible need for a more structured and inclusive review process, to ensure that any BUFR templates approved in the future have been fully vetted. This includes assessment of potential impacts (both positive and negative) on the climate record of any format changes (possibly also involving ETMC), and agreement about how those considerations are weighed in the approval process both within and externally to JCOMM. 8. DMCG-III requested the Secretariat to contact the SOT and DMCG codes groups and to suggest they consider ship metadata proposed by META-T in the development of proposals for ship BUFR templates. 9. META-T now needs to select other types of platform (i.e. another data stream, e.g. buoys, floats, OceanSITES, tide gauges, or other types of ODAS) for which to develop a similar list of metadata. 10. An oral presentation on META-T was made at the CLIMAR-III workshop (Gdynia, Poland, 6-9 May 2008), for stimulating some useful feedback from the climate research and wider data management communities. Results and recommendations based on the META-T work should also be presented to JCOMM-III. DMCG-III invited NMDIS and NDBC to prepare a presentation of META-T and META-T server for JCOMM-III. 11. DMCG-III requested NMDIS and NDBC to discuss the real-time receiving and updating mechanism for META-T. The NMDIS proposed to receive and update metadata on a daily basis in text or XML format through FTP on the Internet, so as to ensure the consistency of the data that reside on both the NMDIS and NDBC servers. ________________     META-T2/Doc.  REF DOC_NO \h  \* MERGEFORMAT 4(2), p.  PAGE 3 META-T2/Doc.  REF DOC_NO \h  \* MERGEFORMAT 4(2), p.  PAGE 3 META-T2/Doc.  REF DOC_NO \h  \* MERGEFORMAT 4(2), p.  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