Exploitable results Web based state-of-the-art intercomparability monitoring within Europe The initial plans were to used MELONs as stable containers for intecomparison material. The MELONs have been tested with the LoFlo instrument at LSCE and with gas-chromatographs in other laboratories and have shown that drifts with time of CO2 and other gas concentrations inside the them were too large for those low pressure containers to be used for intercomparisons. In addition, the experience with the first MELONs sent to field sites showed that they were not easy to handle at some stations. As an alternative, UHEI-IUP suggested a regular filling and distribution of intercomparison samples in glass flasks called SAUSAGES. This programme has been successfully implemented, with continued inter-comparison once every two months during 3 years. All data, measured by different laboratories including CO2 and its stable isotope ratios, CH4 and N2O have been evaluated by UHEI-IUP. Other laboratories in Australia, Japan, USA and Canada are now part of this successful programme. Summarized below are the main steps needed to accomplish associated deliverables D7-9 and D10. Monthly data quality checked and gap filled for the 19 flux tower sites The objectives were to implement an on-line transmission system with real time capabilities at 19 flux tower sites, a standardized methodology for quality check and gap filling for flux towers, and to provide atmospheric CO2 data to a central data archive. Summarized below are the main steps needed to accomplish associated deliverables D13-18. The online database is established and operational at UNITUS at http://gaia.agraria.unitus.it/cpz/tSites.asp Final report and Web site (coordinated by WMO) on progress of European-HUB activities within GLOBALHUBS Programme The initial strategy was to establish in Europe what is referred to as a HUB laboratory, that is, a source of well-characterized atmospheric air under low-pressure in containers called MELONs for other laboratories within Europe. Similar HUBS were foreseen to be established in North America, Australia, and Japan. In the course of TACOS, the WMO-GAW did not endorse the international HUB programme, but we pursued the proposed work. Summarized below are the main steps needed to accomplish associated deliverables D4-7. The final report has been delivered (this document). The web site has been upgraded and the results published in the WMO-GAW programme Expert CO2 series report (Conference in September 2005). Operational System for quality control of calibrations and sample measurements within Europe The use of MELONs was not successful, but instead the quality control based on SAUSAGE flasks is quite successful. The SAUSAGE intercomparison exercise showed that for all components - except N2O - long-term stability of the differences between labs established earlier (see TACOS Intercomparison Report 2003) was good, i.e. no significant drifts could be observed. This implies that a single time-independent correction of data was achieved within our joint measurement projects In this way an internally consistent (flask) data set could be generated for inverse modelling exercises of the Eurasian carbon budget. Report on recommendations for a fully operational monitoring system for the carbon balance The objectives were to implement an on-line transmission system with real time capabilities at 19 flux tower sites, a standardized methodology for quality check and gap filling for flux towers, and to provide atmospheric CO2 data to a central data archive. Summarized below are the main steps needed to accomplish associated. The recommendations report on a fully operational monitoring system for the European carbon balance is in press, to be distributed via the CarboEurope_GHG Concerted Action project. 6 monthly data quality checked and gap filled from all the flux network including ecological variables (36 sites) This deliverable concerns the establishment of an offline database with other flux and meteorology European data, but with standardized variables, general information, and structure. Regarding standardization of quality control and gap filling of eddy covariance data, strong improvements have been completed on the quality check of the datasets. The gap-filling procedure and other quality control procedures are completed and now operational (http://gaia.agraria.unitus.it/cpz/index3.asp). The TACOS project served to implement the quality control of flux data in the new CarboEurope-IP programme. Implementation of routine operation for production of standard air for delivery to isotope labs requiring high precision calibrationImplementation of The new Standard Reference Material (SRM) for CO2 isotopes has been generated, distributed and tested by user laboratories. This is a significant advance in isotope meteorology for atmospheric CO2 studies because the new SRM is an immediate link of the CO2-in-air scale to the international calcite material standard VPDB. It has no equivalent elsewhere in other laboratories. Summarized below are the main steps needed to accomplish associated. Routine operation for production of SRM for delivery to isotope laboratories has been achieved. A large number of preparations have been made using various carbonate materials as well as established CO2 gas standards. Operational System for quality control of calibrations and sample measurement between the European-HUB and the other International HUBS The initial strategy was to establish in Europe what is referred to as a HUB laboratory, that is, a source of well-characterized atmospheric air under low-pressure in containers called MELONs for other laboratories within Europe. Similar HUBS were foreseen to be established in North America, Australia, and Japan. In the course of TACOS, the WMO-GAW did not endorse the international HUB programme, but we pursued the proposed work. Summarized below are the main steps needed to accomplish associated deliverables D4-7. The operational system for quality control of calibration and sample measurement relied on a new, very high precision analyzer LoFlo built in Australia by CSIRO and on new, presumably stable air containers called MELONs. The LoFlo instrument was delivered and operational by month 20, but numerous problems delayed its proper functioning and it was sent out to Australia for repair. Measurements resumed by month 24, in agreement with D6. The MELONs were not stable enough containers for CO2 determination. We stopped the measurement of MELONs and restarted it with high-pressure cylinders in the 3rd year, in agreement with D6. Additionally, a successful flask intercomparison programme ensured the completion of that deliverable (see WP3). Searching for OpenAIRE data... There was an error trying to search data from OpenAIRE No results available
