English (7 MB) - Comprehensive Nuclear-Test-Ban Treaty ...

MAJOR PROGRAMME 2:INTERNATIONAL DATA CENTRENew Year period. Preparations were made to conduct a four week experiment ontimely REB production for five data days a week beginning on 7 January 2001.During 2000 the first five radionuclide stations established by the PTS begancontributing data for the radionuclide reports. The IDC supported the IMS inthe connection, testing and certification of these stations. The overall number ofcontributing stations decreased from 18in 1999 to 15 in 2000 because some non-IMS stations used for testing terminatedtheir provision of data. However, the factthat the new IMS stations provided spectraon a daily (rather than weekly) basisresulted in a 25% increase in the volumeof data processed during the year. TheIDC processed all 2,601 spectra receivedin 2000. Forty of the spectra containedone of the nuclides from the list of relevantnuclides (Level 4), while one spectrumwas found to contain two of thesenuclides (Level 5).RADIONUCLIDE DATAPROCESSING AND ANALYSISAll IDC products underwent quality review before they were released toStates Signatories. An additional element of the quality assurance programmewas the comparison of automatic and reviewed products from the IDCagainst those from the pIDC. The results of this comparison provided usefulinformation for a better understanding of operational software and for developmentof operational procedures.DATA FUSION, REVIEWAND SERVICESThe atmospheric transport modelling software and the associated fusion andvisualization tools available in Releases 2 and 2.1 of the monitoring applicationssoftware were tested and evaluated. Daily activities included the retrieval ofmeteorological data, system monitoring and estimation of the location of airmasses sampled by radionuclide stations that were contributing to IDC testoperations. Methods were developed and applied to assess the radionuclide networkperformance every month as well as to assess the impact of the proposedrelocations of three stations. The first informal exercise undertaken jointly bythe WMO Regional Specialized Meteorological Centres (RSMCs) and the IDCwas conducted in May 2000, and tested methods for exchange and comparisonof atmospheric transport modelling results between these centres and the IDC.Since 21 February 2000, data, products and services have been provided to StatesSignatories on a regular basis. As of the end of 2000, 47 States Signatories hadnominated a total of 318 authorized users to be given access to the data, productsand services. Between February and the end of the year, approximately 12 gigabytesof data and products were requested and exported. Altogether 68,229requests to the Automatic Data Request Manager (AutoDRM) for data andproducts were satisfied and 149,029 products were sent on the basis of establishedsubscriptions. In addition, there were 4,549 visits to the IDC secure website. About 96% of the data and products requested by means of AutoDRM andsubscriptions were dispatched within 3 minutes of the requested time. Duringthe year, 287 requests for assistance were responded to, and 60 tours of the IDC13