The Baseline Surface Radiation Network (BSRN) and its central archive - the World Radiation Monitoring Center (WRMC) - was created in 1992. It is a project of the Data Assimilation Panel from the Global Energy and Water Cycle Experiment (GEWEX) under the umbrella of the World Climate Research Programme (WCRP) and as such is aimed at detecting important changes in the Earth's radiation field at the Earth's surface which may be related to climate changes. The data are of primary importance in supporting the validation and confirmation of satellite and computer model estimates of these quantities. At a small number of stations in contrasting climatic zones, covering a latitude range from 80°N to 90°S, solar and atmospheric radiation is measured with instruments of the highest available accuracy and with high time resolution (1 to 3 minutes). Since 2008 the WRMC is hosted by the Alfred Wegener Institute, Helmholtz Centre for Polar and Marine Research (AWI), Bremerhaven, Germany (http://www.bsrn.awi.de/).
The aim of the project is to improve the metrological foundation of measurements (devices and methods) for monitoring airborne radioactivity and to introduce pan-European harmonisation in data reliability for area dose rate measurements which are input to the European Radiological Data Exchange Platform (EURDEP) and other monitoring networks. One of the main aims of this project is the fastest possible determination of a potential contamination at a kBq m-2 level. Metrologically sound methods will be developed for the evaluation of correct dose rate and activity concentration data. Appropriate harmonised calibration procedures for existing radiological early warning network stations in Europe will be systematically developed in the JRP for both dose rate and airborne radioactivity stations for the first time. Novel traceable reference materials and standard sources will be developed, and proficiency tests and other comparison exercises will be performed to quantify airborne radioactivity and dosimetry data at field stations. Monte Carlo simulations of detector responses and benchmark experiments will be used for the validation of new approaches in environmental radiation monitoring. Improved detection methods and data analyses techniques will be developed to enable accurate measurements of low activity concentrations of radon (in the range from 300 Bq/m3 and below) taking account of the fact that radon contributes to the background responses of many detector systems. Moreover, and as a pure scientific application, harmonised area dose rate data will allow investigations into parameters affecting climate change, e.g. soil moisture, using the Europe-wide dose rate mappings of EURDEP.
Short description: Investigate the basic nature and distribution of radiation in the Alps in the Ultraviolet, Visible and Infrared spectral ranges. Project aims: Development and installation of a number of measurement stations representative of the various climate conditions prevailing in Switzerland due to the presence of the Alps. Measurements of the altitude profiles of the radiative equilibrium in the UV, visible and infrared spectral ranges. Determination of the aerosol, water vapour and ozone columnar amount in the atmosphere. Transfer and application: Network of 4 stations (Jungfraujoch, Davos, Locarno-Monti and Payerne) installed. Contributions to the WMO/WCRP/BSRN and WMO/GAW programs. Begin of climatic evaluation of the results.^Analyse de la nature et de la distribution du rayonnement dans les Alpes dans les domaines spectraux ultraviolet, visible et infrarouge. Objectifs du projet: Developpement et installation de stations de mesure representatives des differentes conditions climatiques regnant en Suisse de par la presence des Alpes. Abstract: Mesures du profil en altitude de l'equilibre radiatif dans les domaines spectraux UV, visible et infrarouge. Determination du contenu en aerosols, vapeur d'eau et ozone de l'atmosphere. Mise en oeuvre et application. Reseau de 4 stations de mesure (Jungfraujoch, Davos, Locarno-Monti et Payerne) installe. Contributions aux programmes mondiaux WMO/WCRP/BSRN et WMO/GAW. Debuts de l'evaluation climatique des resultats. (FRA)
Objective: This project is aimed at improving current methods for monitoring contaminant distribution and biodegradation in the subsurface. Currently proven methods (based on invasive sampling of soil, soil water and gaseous phase) are unable to provide sufficiently accurate data with high enough resolution. Resulting in inability to assess of bioremediation progress and quantification of the processes involved in such bioremediation at field sites. Consequently, present assessment strategies to decide on optimal remediation approach, including design of monitoring systems, and evaluation of degradation progress, are severely flawed by uncertainty. Geophysical time-lapse measurements in combination with novel ground truthing methods give the possibility to determine: absolute contamination levels, spatial spreading, and reduced concentrations of contaminants in a heterogeneous environment. Geophysical methods of data acquisition alone are presently unable to provide absolute levels of biodegradable contamination concentrations. We aim to make improvements of fundamental constitutive relations between soil physical and degradation activity parameters and geophysically measurable parameters. Despite current improvements, there is a strong need to test these theories in practical field situations. Our project is dedicated to improving both site contamination assessment and the monitoring of bioremediation processes, and changes in soil environmental conditions. We suggest combining improved conventional soil monitoring techniques with state-of-the-art geophysical approaches. Partners in the project range from microbiologists to geophysicist, all with working experience from contaminated sites. Process studies involving lysimeters, and testing of the combination of technologies at two field sites are the major aims of the project. Focus on practical field situations and strong communication with stake-holders and SMEs will ensure high relevance for society.
Wildschweinfleisch ist ein Nahrungsmittel, das als Folge des Reaktorunfalls von Tschernobyl noch immerhoch kontaminiert sein kann. In einigen Gebieten der Bundesrepublik wird der Grenzwert für Radiocäsium von600 Bq/kg häufig überschritten. Ziel des Forschungsvorhabens ist zum einen, die vorliegenden Messungenzur Radiocäsiumkontamination von Wildschweinen in Deutschland möglichst vollständig zu erfassen, undzum anderen, eine Landkarte mit der potenziellen Kontamination von Wildschweinen zu erstellen. Insgesamtergibt sich damit ein bundesweites Bild über die tatsächliche (Messwerte) oder mögliche (Prognosewerte)Kontamination dieser Tiere.
Im Rahmen des Vorhabens 'Erarbeitung fachlicher Grundlagen für die Entwicklung zeit- und kosteneffektiverVerfahren zur Bestimmung von Strahlenexpositionen durch Radon in Wohnungen(3607S04534)' wurde dargelegt, wie der Radonquellterm eines Hauses zusammen mit den Ergebnissen vonLuftwechselmessungen bestimmt bzw. modelliert werden kann und welche Prognosen daraus für ein möglichesRadonrisiko abgeleitet werden können. Die Auswertung von Lang- (mehrere Monate) und Kurzzeitmessungen(1 - 2 Wochen, zeitaufgelöst) zeigte, dass passive 2-Phasenmessungen (z. B. Tag/Nacht) in Wohnräumen sehr kostengünstig sind und eine Bewertung des Radonrisikos bzw. der individuellen Exposition derHausbewohner unter Berücksichtigung der Hausnutzung auf einer guten Grundlage ermöglichen.
According to the Directive 96/29/EURATOM the monitoring of occupational radiation exposures shall base on individual measurements carried out by an approved dosimetric service. Pursuant to the European Directive an approved dosimetric service is a body responsible for the calibration, reading or interpretation of individual monitoring devices …, whose capacity to act in this respect is recognized by the competent authorities. This concept will also be applied to radon services issuing passive radon measurement devices. Passive radon measurement devices1 using solid state nuclear track detectors or electrets are recommended for individual monitoring of exposures to radon. German regulations lay down that radon measuring devices are appropriate for purposes of occupational radiation monitoring if the devices are issued by recognized radon measurement services, and the measurement service submits devices of the same type issued for radon monitoring to regular intercomparisons conducted by the Bundesamt für Strahlenschutz (BfS). A radon measuring service is recognized by the competent authority if it proves its organisational and technical competence, e. g. by accreditation. These regulations have been introduced in the area of occupational radiation exposures. Nevertheless, it is recommended that radon measuring services which carry out radon measurements in other areas (e.g. dwellings) should subject themselves to these measures voluntarily. The interlaboratory comparisons comprise the organization, exposure, and evaluation of measurements of radon activity concentration or exposure to radon. The comparisons only concern radon-222; radon-220 is not in the scope. Radon services being interested can get further information from the European Information System on Proficiency Testing Schemes (EPTIS) and from the BfS websites.
According to the Directive 96/29/EURATOM the monitoring of occupational radiation exposures shall base on individual measurements carried out by an approved dosimetric service. Pursuant to the European Directive an approved dosimetric service is a body responsible for the calibration, reading or interpretation of individual monitoring devices …, whose capacity to act in this respect is recognized by the competent authorities. This concept will also be applied to radon services issuing passive radon measurement devices. Passive radon measurement devices1 using solid state nuclear track detectors or electrets are recommended for individual monitoring of exposures to radon. German regulations lay down that radon measuring devices are appropriate for purposes of occupational radiation monitoring if • the devices are issued by recognized radon measurement services, and • the measurement service submits devices of the same type issued for radon monitoring to regular intercomparisons conducted by BfS. A radon measuring service is recognized by the competent authority if it proves its organizational and technical competence, e. g. by accreditation. These regulations have been introduced in the area of occupational radiation exposures. Nevertheless, it is recommended that radon measuring services which carry out radon measurements in other areas (e.g. dwellings) should subject themselves to these measures voluntarily. The interlaboratory comparisons comprise the organization,
According to the Directive 96/29/EURATOM the monitoring of occupational radiation exposures shall base on individual measurements carried out by an approved dosimetric service. Pursuant to the European Directive an approved dosimetric service is a body responsible for the calibration, reading or interpretation of individual monitoring devices, whose capacity to act in this respect is recognized by the competent authorities. This concept will also be applied to radon services issuing passive radon measurement devices. Passive radon measurement devices1 using solid state nuclear track detectors or electrets are recommended for individual monitoring of exposures to radon. German regulations lay down that radon measuring devices are appropriate for purposes of occupational radiation monitoring if the devices are issued by recognized radon measurement services, and the measurement service submits devices of the same type issued for radon monitoring to regular intercomparisons conducted by the Bundesamt für Strahlenschutz (BfS). A radon measuring service is recognized by the competent authority if it proves its organisational and technical competence, e. g. by accreditation. These regulations have been introduced in the area of occupational radiation exposures. Nevertheless, it is recommended that radon measuring services which carry out radon measurements in other areas (e.g. dwellings) should subject themselves to these measures voluntarily. The interlaboratory comparisons comprise the organization, exposure, and evaluation of measurements of radon activity concentration or exposure to radon. The comparisons only concern radon-222; radon-220 is not in the scope. Radon services being interested can get further information from the European Information System on Proficiency Testing Schemes (EPTIS) and from the BfS’ websites.
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