Download or read book Reliability of Radioactive Transfer Models written by G. Desmet and published by Springer Science & Business Media. This book was released on 2012-12-06 with total page 379 pages. Available in PDF, EPUB and Kindle. Book excerpt: Assessment of the radiological impact of planned or existing practices involving the (actual or potential) release of radionuclides to the environment are largely based on the use of modelling techniques which allow prediction of the relationship between environmental levels and releases and the associated radiation dose to man. Models are imperfect means of representing environmental transfer processes, and it is essential to know the reliability which can be associated with the predictions of these models for each and every assessment situation. Such information is necessary in order to establish confidence in model predictions and, in particular, to allow adequate safety margins to be set in the design of nuclear facilities. This knowledge is also a prerequisite to determine release limits or to decide whether further research is justified in order to improve predictive accuracy. Therefore a number of distinguished pilpers have been presented during this workshop which focused both on practical aspects of variability of observations of facts occuring in nature, but also on learned aspects of the science of statistics. It is not very clear, however, whether much insight in mechanisms is gained by such an approach. This insight is probably rather reached by a straightforward judgment of the quality of the primary data and by the willingness to think over carefully the experiments and measurernents before doing them. The book is composed such as to give the reader the chance to quietly study the presented papers in good order.
Download or read book Results of Comparison Studies of Infrared Radiative Transfer Models written by and published by . This book was released on 1986 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: The capability to accurately model the natural and perturbed climate is important to the understanding of current-related issues. It is important that all the major physical processes and feedback mechanisms in climate models be evaluated as to their accuracy and limitations. Since the transfer of solar and longwave radiation represents the prime physical process that drives the circulation of the atmosphere and its temperature structure, an evaluation of the modeling of radiative processes is a critical element in the overall evaluation of the models. This paper discusses model comparison studies of infrared radiative transfer models that have been conducted for the purpose of validating and improving these models. 18 refs., 7 tabs.
Download or read book Radiative Transfer in Coupled Environmental Systems written by Knut Stamnes and published by John Wiley & Sons. This book was released on 2016-03-18 with total page 368 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book is dedicated to the formulation and solution of forward and inverse problems related to coupled media, and provides examples of how to solve concrete problems in environmental remote sensing of coupled atmosphere-surface systems. The authors discuss radiative transfer in coupled media such as the atmosphere-ocean system with Lambertian as well non-Lambertian reflecting surfaces at the lower boundary. The spectral range from the ultraviolet to the microwave region of the electromagnetic spectrum is considered, as are multi-spectral as well as hyperspectral remote sensing, while solutions of the forward problem for unpolarized and polarized radiation are discussed in detail.
Download or read book 3D Radiative Transfer in Cloudy Atmospheres written by Alexander Marshak and published by Springer Science & Business Media. This book was released on 2006-05-27 with total page 688 pages. Available in PDF, EPUB and Kindle. Book excerpt: Developments in three-dimensional cloud radiation over the past few decades are assessed and distilled into this contributed volume. Chapters are authored by subject-matter experts who address a broad audience of graduate students, researchers, and anyone interested in cloud-radiation processes in the solar and infrared spectral regions. After two introductory chapters and a section on the fundamental physics and computational techniques, the volume extensively treats two main application areas: the impact of clouds on the Earth's radiation budget, which is an essential aspect of climate modeling; and remote observation of clouds, especially with the advanced sensors on current and future satellite missions.
Download or read book Atmospheric Radiation written by R. M. Goody and published by Oxford University Press. This book was released on 1995-12-07 with total page 536 pages. Available in PDF, EPUB and Kindle. Book excerpt: A complete revision of Goody's classic 1964 work, this volume offers a systematic discussion of atmospheric radiation processes that today are at the center of worldwide study and concern. It deals with the ways in which incident solar radiation is transformed into scattered and thermal radiation, and the thermodynamic consequences for the Earth's gaseous envelope, identifying aspects of the interaction between radiation and atmospheric motions as the central theme for atmospheric radiation studies. As a complete treatment of physical and mathematical foundations, the text assumes no prior knowledge of atmospheric physics. The theoretical discussion is systematic, and can therefore be applied with minor extension to any planetary atmosphere.
Download or read book Numerical Accuracy of a Two stream Radiative Transfer Model from Comparison with an N stream Model written by Wouter Verhoef and published by . This book was released on 1988 with total page 8 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book A Radiative Transfer Model to Analyze Radiometer Data in the Atmospheric Window written by Keith James Duffy and published by . This book was released on 1996-03-01 with total page 108 pages. Available in PDF, EPUB and Kindle. Book excerpt: A radiation model was developed to calculate radiance in a plane parallel, vertically nonhomogeneous, nonscattering atmosphere. The radiance model was developed to analyze data collected by a vertically pointed radiometer with a receiver bandwidth of 9.5-11.5 micrometers. These radiometer readings are used in conjunction with backscatter readings from a vertically aligned polarization diversity lidar system to compute various cirrus cloud properties such as infrared (IR) emittance. The model used the correlated k-distribution method (CKD) to calculate absorption coefficient functions and account for the nonhomogeneity of the atmosphere. Transmittance and radiance results from this CKD model were compared with results from FASCODE3, a popular and highly accurate line-by-line (LBL) radiation model. Several different atmospheric profiles, ranging from subarctic to tropical, were compared to determine the accuracy and efficiency of the CKD model with respect to the LBL model. At the highest resolutions, the CKD model was 15-100 times faster than the LBL model. Despite the increased efficiency, the CKD model transmittance errors from the earth surface to 30 km were less than 0.4% with respect to the LBL model in temperate and arctic profiles. Errors were less than 2% in the tropical profile. The CKD model downwelling radiance errors from the surface to 30 km were less than 2% with respect to the LBL model for tropical and temperate profiles. In arctic conditions, radiance errors were as high as 8.5% below 2 km, but tapered off to 3% at cirrus cloud levels. In temperate atmospheres, the CKD model could be run as much as 300 times faster, while still calculating radiance values to within 0.6% of the LBL model.
Download or read book An Assessment of the Accuracy of the RTTOV Fast Radiative Transfer Model Using Iasi Data written by M. Matricardi and published by . This book was released on 2009 with total page 22 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Leaf Optical Properties written by Stéphane Jacquemoud and published by Cambridge University Press. This book was released on 2019-09-05 with total page 571 pages. Available in PDF, EPUB and Kindle. Book excerpt: Presents state-of-the-art research into leaf interactions with light, for scientists working in remote sensing, plant physiology, ecology and resource management.
Download or read book Quality Reliability Security and Robustness in Heterogeneous Networks written by Karan Singh and published by Springer. This book was released on 2013-07-04 with total page 1027 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book constitutes the thoroughly refereed post-conference proceedings of the 9th International Conference on Heterogeneous Networking for Quality, Reliability, Security and Robustness, QShine 2013, which was held in National Capital Region (NCR) of India during January 2013. The 87 revised full papers were carefully selected from 169 submissions and present the recent technological developments in broadband high-speed networks, peer-to-peer networks, and wireless and mobile networks.
Download or read book Reliability of Radiactive Transfer Models written by G. Desmet and published by . This book was released on 1988 with total page 355 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Longwave Radiative Transfer in the Atmosphere written by Jennifer Simmons Delamere and published by . This book was released on 2003 with total page 306 pages. Available in PDF, EPUB and Kindle. Book excerpt: "A FLexible Radiative Transfer Tool (FLRTT) has been developed to facilitate the construction of longwave, correlated k-distribution, radiative transfer models. The correlated k-distribution method is a technique which accelerates calculations of radiances, fluxes, and cooling rates in inhomogeneous atmospheres; therefore, correlated k-distribution models are appropriate for simulations of satellite radiances and inclusion into general circulation models. FLRTT was used to build two new rapid radiative transfer models, RRTMH̲IRS and RRTMv̲3.0, which maintain accuracy comparable to the line-by-line radiative transfer model LBLRTM. Iacono et al. [2003] evaluated upper tropospheric water vapor (UTWV) simulated by the National Center for Atmospheric Research Community Climate Model, CCM3, by comparing modeled, clear-sky brightness-temperatures to those observed from space by the High-resolution Radiation Sounder (HIRS). CCM3 was modified to utilize the rapid radiative transfer model RRTM and the separate satellite-radiance module, RRTMH̲IRS, which calculates brightness temperatures in two HIRS channels. By incorporating these accurate radiative transfer models into CCM3, the longwave radiative transfer calculations have been removed as a significant source of error in the simulations. An important result of this study is that CCM3 exhibits moist and dry discrepancies in UTWV of 50% in particular climatic regions, which may be attributed to errors in the CCM3 dynamical schemes. RRTMv̲3.0, an update of RRTM, is a rapid longwave radiative transfer appropriate for use in general circulation models. Fluxes calculated by RRTMv̲3.0 agree with those computed by the LBLRTM to within 1.0 W / m2 at all levels, and the computed cooling rates agree to within 0.1 K/ day and 0.3 K/ day in the troposphere and stratosphere, respectively. This thesis also assessed and improved the modeling of clear-sky, longwave radiative fluxes at the Atmospheric Radiation Measurement Program North Slope of Alaska site by simultaneously addressing the specification of the atmosphere, radiometric measurements, and radiative transfer modeling. Consistent with findings from other field sites, the specification of the atmospheric water vapor is found to be a large source of uncertainty in modeled radiances and fluxes. Improvements in the specification of carbon dioxide optical depths within LBLRTM resulted, in part, from this analysis"--Leaf iii.
Download or read book Theory of Radiative Transfer Models Applied in Optical Remote Sensing of Vegetation Canopies written by W. Verhoef and published by . This book was released on 1998 with total page 320 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Physics and Chemistry of Circumstellar Dust Shells written by Hans-Peter Gail and published by Cambridge University Press. This book was released on 2014 with total page 699 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book explores why dust forms around stars, and how to model stellar dust formation and dust-forming environments consistently.
Download or read book Research Into Radiative Transfer Modeling and Applications written by Cynthia K. Whitney and published by . This book was released on 1973 with total page 90 pages. Available in PDF, EPUB and Kindle. Book excerpt: A new and computationally efficient method for treating problems in radiative transfer was adapted for more general problems and submitted to numerical testing to establish accuracy and efficiency in comparison to other methods. Results indicate that the method has promise for application in a wide variety of practical problems in atmospheric physics. (Author).
Download or read book Radiative Transfer Modeling written by Weixue Tian and published by . This book was released on 2005 with total page 216 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Radiative Energy Transfer written by Robert Goulard and published by Elsevier. This book was released on 2017-07-26 with total page 677 pages. Available in PDF, EPUB and Kindle. Book excerpt: Radiative Energy Transfer presents the proceedings of the symposium on interdisciplinary aspects of radiative energy transfer held in Philadelphia, Pennsylvania on February 24-26, 1966. The book includes topics on the two main classical directions of radiative transfer: diagnostic techniques and energy exchanges. The text also covers topics on molecular band models, inversion techniques, scattering problems, and shock-wave structure. Topics on high-speed shocks, stellar atmospheres, and meteorology are also encompassed.
