Download or read book Description and Evaluation of the Atmospheric Radionuclide Transport Model ARTM written by Robert Hanfland and published by . This book was released on 2023 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: In Germany, the Lagrangian Atmospheric Radionuclide Transport Model (ARTM) was developed in order to monitor and forcast the immission of discharges from nuclear facilities within a typical distance of up to 20 km and within the planetary boundary layer. Such transport models have to be validated carefully to make sure that they simulate tracer dispersions comparable to reality. This study shows the description and extension of ARTM as well as the analysis of the three-dimensional dispersion properties and their evaluation. In a sensitivity study, the effects of stability class, roughness length, zero-plane displacement, source height and tracer type on the three-dimensional plume dispersion are analysed. Furthermore, the dispersion of five different turbulence models are studied. Airborne CO2 observations in the vicinity of the lignite power plant Bełchatów, Poland, allow to evaluate the model performance under unstable boundary layer conditions. An intercomparison of ARTM with numerical weather prediction and large-eddy simulation models extend the investigation to slightly unstable atmospheric conditions. The results show that the stability class, as a parametrisation of the atmospheric stability, causes the largest impact to the simulation results. The turbulence models show deviation from the well-mixed state by up to approx. 20%. All simulated mixing ratios are in the same order of magnitude as the airborne in situ data. Although, some turbulence models underestimate the plume widths by up to 50%. The results of this work help to improve the agreement of plumes simulated by ARTM with real plumes under very unstable atmospheric conditions by the selection of distinct turbulence models.
Download or read book Validation and Verification of the Atmospheric Radionuclide Transport Model ARTM written by Sebastian Hettrich and published by . This book was released on 2017 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Evaluation of the Atmospheric Transport Modelling Tools Used at the Provisional Technical Secretariat written by and published by . This book was released on 2001 with total page 73 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Atmospheric Transport and Deposition Modeling written by United States-Canada Research Consultation Group On The Long-Range Transport Of Air Pollutants. Subgroup On Atmospheric Transport And Deposition Modeling and published by . This book was released on 1980 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Evaluation of Atmospheric Transport Models written by Arthur S. Rood and published by . This book was released on 1996 with total page 70 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Performance Evaluation of Atmospheric Transport Models written by Arthur S. Rood and published by . This book was released on 1996 with total page 90 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Evaluation of Long range Atmospheric Transport Models written by and published by . This book was released on 1988 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Evaluation of Long Range Atmospheric Transport Models Using Environmental Activity Radiation Protection written by W. Klug and published by Bernan Press(PA). This book was released on 1993-12 with total page 913 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book The CTBTO WMO Atmospheric Backtracking Response System and the Data Fusion Exercise 2007 written by and published by . This book was released on 2008 with total page 15 pages. Available in PDF, EPUB and Kindle. Book excerpt: Atmospheric Transport Modelling (ATM) is a Comprehensive Nuclear-Test-Ban Treaty (CTBT) verification technology that provides the required network processing capability for measurements at radionuclide stations (particulate as well as noble gas). The associated radionuclide source location analyses are a crucial element of the treaty verification system, since they can be compared and overlaid with localization information obtained from the waveform technologies. Based on the 2003 cooperation agreement between the CTBTO Organization (CTBTO) and the World Meteorological Organization (WMO), a WMO Executive Council decision in 2007 and an exchange of letters between the CTBTO Executive Secretary and the Secretary General of WMO, the CTBTO Provisional Technical Secretariat (PTS) can now request ATM computations from WMO Centres in near-real-time in case of anomalous radionuclide measurements. Currently, nine WMO Centres in Europe (5), North America (1), Asia (2), and Australia (1) are participating. The system serves two purposes, namely (a) to supplement and add confidence to the PTS in-house computations, and (b) to form an ensemble modeling system that accounts for the inherent uncertainty of single models and individual meteorological analyses. The system is scheduled for entry into PTS provisional operations in September 2008. The PTS and WMO have conducted a joint atmospheric backtracking exercise in December 2007. The exercise was triggered by a seismic event from the Standard Event List (SEL3) selected according to predefined criteria, and a forward simulation of the possible release of radionuclides at this event location was performed by the event selection team to obtain a subsequent measurement scenario at IMS radionuclide sites. The evolving measurement scenario was then communicated to the PTS Monitoring and Data Analysis Section, exactly according to the timelines laid down in the Operational Manual.
Download or read book Federal Research and Development Needs and Priorities for Atmospheric Transport and Diffusion Modeling written by United States. Office of Federal Coordinator for Meteorological Services and Supporting Research. Joint Action Group for Atmospheric Transport and Diffusion Modeling (Research and Development Plan) and published by . This book was released on 2004 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book ATMES written by and published by . This book was released on 1993 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Simulating radionuclide fate and transport in the unsaturated zone evaluation and sensitivity analyses of select computer models written by Jin-Song Chen and published by DIANE Publishing. This book was released on 2002 with total page 186 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Atems Evaluation of Long range Atmospheric Transport Models Using Environmental Radioactivity Data from the Chernobyl Accident written by and published by . This book was released on with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Energy Research Abstracts written by and published by . This book was released on 1992 with total page 806 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Evaluation of Meteorological Analyses for the Radionuclide Dispersion and Deposition from the Fukushima Daiichi Nuclear Power Plant Accident written by and published by . This book was released on 2013 with total page 72 pages. Available in PDF, EPUB and Kindle. Book excerpt: "The World Meteorological Organization (WMO) organized a small Task Team (TT) to respond to a request from the United Nations Scientific Committee on the Effects of Atomic Radiation (UNSCEAR) to assist them with determining the meteorological aspects of a dose assessment of the radiological releases from the Fukushima Daiichi nuclear power plant accident. The TT's primary mission was to examine how using meteorological analyses and introducing additional meteorological observational data might improve atmospheric transport, dispersion and deposition calculations, critical components in dose computation. Although the TT would not be doing dose computations directly for the UNSCEAR assessment, the members agreed that the best way to evaluate the suitability of the various meteorological analyses for this purpose was to use the meteorological data in Atmospheric Transport Dispersion and Deposition Models (ATDM) and compare the model predictions with radiological monitoring data."--Publisher's description.
Download or read book Subsurface Solute Transport Models and Case Histories written by Vyacheslav G. Rumynin and published by Springer Science & Business Media. This book was released on 2012-01-14 with total page 820 pages. Available in PDF, EPUB and Kindle. Book excerpt: The book addresses the development of the basic knowledge of the subsurface solute transfer with a particular emphasis on field data collection and analysis coupled with modeling (analytical and numerical) tool application. The relevant theoretical developments are concerned mainly with the formulation and solution of deterministic mass-transport equations for a wide range of engineering issues in groundwater quality assessment and forecasting. The book gives many computational examples and case studies drawn from the conducted field investigations. The analyzed problems are as follows: investigation and prediction of groundwater contamination by industrial contaminants and solutions (radionuclides, chloride and nitrate brine) with special focus on the effect of (a) aquifer heterogeneity, anisotropy, and dual porosity, (b) density contrast existing between industrial waste and groundwater, or in density-stratified artesian and coastal groundwater systems; (c) physicochemical interactions that play a major role in retarding (e.g. adsorption) or enhancing (e.g. interactions between dissolved species and mobile colloids) contaminant transport; prediction of the effects of pumping on groundwater quality at wellfields; groundwater dating using stable and radioactive isotopes for prediction and assessment of contamination potential; field and laboratory tests’ design and analysis, and monitoring data interpretation; partitioning of surface and subsurface flows using isotope techniques. One of the most essential topics addressed in the book is the migration and fate of radionuclides. Model development is motivated by field data analysis from a number of radioactively contaminated sites in the Russian Federation: near-surface radioactive waste disposal sites and deep-well radioactive waste injection sites. They play a unique role in the advancement of knowledge of the subsurface behavior and fate of many hazardous radionuclides and can be considered as field-scale laboratories. Thus, the book, along with theoretical findings, contains field information, which will facilitate the understanding of subsurface solute transport and the development of a methodology for practical applications to groundwater hydrology.
Download or read book Transactions of the American Nuclear Society written by and published by . This book was released on 1991 with total page 1376 pages. Available in PDF, EPUB and Kindle. Book excerpt:
