Download or read book An Introduction to Global Spectral Modeling written by T.N. Krishnamurti and published by Springer Science & Business Media. This book was released on 2006-07-11 with total page 328 pages. Available in PDF, EPUB and Kindle. Book excerpt: This is an introductory textbook on global spectral modeling designed for senior-level undergraduates and possibly for first-year graduate students. This text starts with an introduction to elementary finite-difference methods and moves on towards the gradual description of sophisticated dynamical and physical models in spherical coordinates. Computational aspects of the spectral transform method, the planetary boundary layer physics, the physics of precipitation processes in large-scale models, the radiative transfer including effects of diagnostic clouds and diurnal cycle, the surface energy balance over land and ocean, and the treatment of mountains are some issues that are addressed. The topic of model initialization includes the treatment of normal modes and physical processes. A concluding chapter covers the spectral energetics as a diagnostic tool for model evaluation. This revised second edition of the text also includes three additional chapters. Chapter 11 deals with the formulation of a regional spectral model for mesoscale modeling which uses a double Fourier expansion of data and model equations for its transform. Chapter 12 deals with ensemble modeling. This is a new and important area for numerical weather and climate prediction. Finally, yet another new area that has to do with adaptive observational strategies is included as Chapter 13. It foretells where data deficiencies may reside in model from an exploratory ensemble run of experiments and the spread of such forecasts.
Download or read book An Introduction to Global Spectral Modeling written by Krishnamurti, Tiruvalam Natarajan Krishnamurti and published by . This book was released on 1998 with total page 253 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book An Introduction to Global Spectral Modeling written by Jacobus Willem Bakker and published by Springer. This book was released on 1989 with total page 724 pages. Available in PDF, EPUB and Kindle. Book excerpt: "This volume is based on the "School/Workshop on Linear Time, Branching Time and Partial Order in Logics and Models for Concurrency" organized by the editors and held in the period May 30-June 3, 1988 at Noordwijkerhout, The Netherlands. The School/Workshop was an activity of the project REX - Research and Education in Concurrent Systems. The volume contains tutorials and research contributions to the three approaches - linear time, - branching time, and - partial order in semantics and proof theory of concurrent programs by the main specialists in this field. It promotes an in-depth understanding of the relative merits and disadvantages of these three approaches. An introduction to the recent literature on the subject is provided by the invited research contributions.''--Publisher's website.
Download or read book An Introduction to Global Spectral Modeling written by T.N. Krishnamurti and published by Springer Science & Business Media. This book was released on 2006-02-02 with total page 328 pages. Available in PDF, EPUB and Kindle. Book excerpt: This is an introductory textbook on global spectral modeling designed for senior-level undergraduates and possibly for first-year graduate students. This text starts with an introduction to elementary finite-difference methods and moves on towards the gradual description of sophisticated dynamical and physical models in spherical coordinates. Computational aspects of the spectral transform method, the planetary boundary layer physics, the physics of precipitation processes in large-scale models, the radiative transfer including effects of diagnostic clouds and diurnal cycle, the surface energy balance over land and ocean, and the treatment of mountains are some issues that are addressed. The topic of model initialization includes the treatment of normal modes and physical processes. A concluding chapter covers the spectral energetics as a diagnostic tool for model evaluation. This revised second edition of the text also includes three additional chapters. Chapter 11 deals with the formulation of a regional spectral model for mesoscale modeling which uses a double Fourier expansion of data and model equations for its transform. Chapter 12 deals with ensemble modeling. This is a new and important area for numerical weather and climate prediction. Finally, yet another new area that has to do with adaptive observational strategies is included as Chapter 13. It foretells where data deficiencies may reside in model from an exploratory ensemble run of experiments and the spread of such forecasts.
Download or read book An Introduction to Global Spectral Modeling Introduction 2 An Introduction to Finite Differencing 3 Time Differencing Schemes 4 What Is a Spectral Model 5 Lower Order Spectral Model 6 Mathematical Aspects of Spectral Models 7 Multilevel Global Spectral Model 8 Physical Processes 9 Initialization Procedures 10 Spectral Energetics References Index written by Tiruvalam Natarajan Krishnamurti and published by . This book was released on with total page 264 pages. Available in PDF, EPUB and Kindle. Book excerpt: This is an introductory text on numerical weather prediction (numerically modelling the general circulation of the atmosphere), utilizing the spectral transform method. The book covers finite difference methods and time-differencing schemes; the theoretical development of the spectral transform method (using spherical surfaces rather than grids for determining variation in the elements of weather); physical processes; current issues in dynamical and physical initiation; and data analysis. Several practical examples of the spectral transform method are included.
Download or read book Atmospheric Circulation Dynamics and General Circulation Models written by Masaki Satoh and published by Springer Science & Business Media. This book was released on 2013-07-04 with total page 756 pages. Available in PDF, EPUB and Kindle. Book excerpt: General circulation models (GCMs), which define the fundamental dynamics of atmospheric circulation, are nowadays used in various fields of atmospheric science such as weather forecasting, climate predictions and environmental estimations. The Second Edition of this renowned work has been updated to include recent progress of high resolution global modeling. It also contains for the first time aspects of high-resolution global non-hydrostatic models that the author has been studying since the publication of the first edition. Some highlighted results from the Non-hydrostatic ICosahedral Atmospheric Model (NICAM) are also included. The author outlines the theoretical concepts, simple models and numerical methods for modeling the general circulation of the atmosphere. Concentrating on the physical mechanisms responsible for the development of large-scale circulation of the atmosphere, the book offers comprehensive coverage of an important and rapidly developing technique used in the atmospheric science. Dynamic interpretations of the atmospheric structure and their aspects in the general circulation model are described step by step.
Download or read book Atmospheric Circulation Dynamics and Circulation Models written by Masaki Satoh and published by Springer Science & Business Media. This book was released on 2004-05-03 with total page 676 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book describes the methods used to construct general circulation models of the atmosphere, and how such models perform in applications relating to the real climate and environmental systems. The author describes the fundamental dynamics of the atmospheric circulation, modelling of the general circulation, and applications of GCMs. The book consists of three parts: - Part 1 summarizes the physical processes involved, including basic equations, waves and instabilities; - Part 2 covers atmospheric structures, including various types of one- and two-dimensional structures and circulations; - Part 3 describes the basic notions for construction of general circulation models of the atmosphere and their applications. Atmospheric Circulation Dynamics and General Circulation Methods includes an appendix incorporating the basic data and mathematical formulae required to enable readers to construct GCMs for themselves.
Download or read book Spectral Analysis of Signals written by Yanwei Wang and published by Morgan & Claypool Publishers. This book was released on 2005 with total page 108 pages. Available in PDF, EPUB and Kindle. Book excerpt: Spectral estimation is important in many fields including astronomy, meteorology, seismology, communications, economics, speech analysis, medical imaging, radar, sonar, and underwater acoustics. Most existing spectral estimation algorithms are devised for uniformly sampled complete-data sequences. However, the spectral estimation for data sequences with missing samples is also important in many applications ranging from astronomical time series analysis to synthetic aperture radar imaging with angular diversity. For spectral estimation in the missing-data case, the challenge is how to extend the existing spectral estimation techniques to deal with these missing-data samples. Recently, nonparametric adaptive filtering based techniques have been developed successfully for various missing-data problems. Collectively, these algorithms provide a comprehensive toolset for the missing-data problem based exclusively on the nonparametric adaptive filter-bank approaches, which are robust and accurate, and can provide high resolution and low sidelobes. In this book, we present these algorithms for both one-dimensional and two-dimensional spectral estimation problems.
Download or read book THE AFGL GLOBAL SPECTRAL MODEL written by Stephen Brenner and published by . This book was released on 1984 with total page 72 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book The AFGL Global Spectral Model written by Stephen Brenner and published by . This book was released on 1984 with total page 84 pages. Available in PDF, EPUB and Kindle. Book excerpt: The flexible resolution/truncation baseline version of the AFGL global spectral model as adapted to the CRAY-1 is described. A series of low-resolution (6 layer, rhomboidal 15) and high-resolution (12 layer, rhomboidal 30) forecasts were run and compared to test the performance of the model. In general, higher resolution resulted in improved forecast skill in the 24-to-96-hour range. The only exception to this is the humidity forecast, which shows minimal skill. This characteristic is rather insensitive to the resolution partly because of the poor quality of analyzed humidity fields used for initial data and verification. The original gridded (2.5 X 2.5 deg) topography has been replaced by a smoothed terrain field that has been passed through a nine-point smoother, interpolated to the model's Gaussian grid, and then spectrally truncated. Finally, the effects of initialization have been studied by comparing a series of forecasts subjected to several initialization methods. For forecasts beyond 24 hours, the model is able to supress spurious gravity waves through the combined effects of the semi-implicit time scheme and the subgrid scale diffusion. The impact of normal mode initialization is seen mainly in the very short-range forecasts (less than 24 hours) and is thus important for providing smooth first-guess fields for the analysis/data assimilation cycle. Keywords: Atmospheric models; Spectral models; Weather forecasting; Numerical weather prediction; Global atmospheric circulation.
Download or read book Monthly Weather Review written by and published by . This book was released on 2004 with total page 702 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Spectral Modeling at NMC written by and published by . This book was released on 1980 with total page 10 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Physically Based Modelling and Simulation of Climate and Climatic Change written by M.E. Schlesinger and published by Springer Science & Business Media. This book was released on 2012-12-06 with total page 635 pages. Available in PDF, EPUB and Kindle. Book excerpt: PREFACE xv LIST OF LECTURERS xix LIST OF PARTICIPANTS xx]. VOLUME I PART I - DESIGN AND DEVELOPMENT OF PHYSICALLY-BASED MODELS OF THE ATMOSPHERE Section 1 - Introduction GATES, W. L. - Climate and the Climate System 3 SIMMONS, A. J. and L. BENGTSSON - Atmospheric General Circulation Models: Their Design and Use for Climate Studies 23 Section 2 - Numerical Methods for Large-Scale Dynamics ARAKAWA, A. - Finite-Difference Methods in Climate Modeling 79 BOURKE, W. - Spectral Methods in Global Climate and Weather Prediction Models 169 Section 3 - Parameterization of Subgrid-Scale Physical Processes FOUQUART, Y. - Radiative Transfer in Climate Models 223 LAVAL, K. - Land Surface Processes 285 SELLERS, P. J. , Y. MINTZ, Y. C. SUD and A. DALCHER - A Brief Description of the Simple Biosphere Model (SiB) 307 SOMMERIA, G. - Parameterization of the Planetary Boundary Layer in Large-Scale Atmospheric Models 331 x TABLE OF CONTENTS TIEDTKE, M. - Parameterization of Cumulus Convection in Large-Scale Models 375 SUNDQVIST, H. - Parameterization of Condensation and Associated Clouds in Models for Weather Prediction and General Circulation Simulation 433 PART II - DESIGN AND DEVELOPMENT OF PHYSICALLY-BASED MODELS OF THE OCEAN AND SEA ICE HAN, Y. -J. - Modelling and Simulation of the General Circulation of the Ocean 465 HIBLER, W. D. - Modelling Sea Ice Thermodynamics and Dynamics in Climate Studies 509 PART III - METHODS OF COUPLING ATMOSPHERE, OCEAN AND ICE MODELS BRYAN, K.
Download or read book Parallel Supercomputing In Atmospheric Science Proceedings Of The Fifth Ecmwf Workshop On The Use Of Parallel Processors In Meteorology written by Geerd-r Hoffmann and published by World Scientific. This book was released on 1993-07-15 with total page 546 pages. Available in PDF, EPUB and Kindle. Book excerpt: Weather forecasting and climatology have traditionally been users of the world's fastest supercomputers. The recent emergence of massively parallel supercomputers as likely successors to current vector supercomputers has created an acute need to convert weather and climate models to suit parallel supercomputers with thousands of processors. Several major efforts are underway worldwide to accomplish this. ECMWF has established itself as the central venue for bringing together operational weather forecasters, climate researchers and parallel computer manufacturers to share their experience on these efforts every second year. The recent dramatic developments in supercomputer manufacturing have made the 1992 ECMWF Workshop timelier than before.
Download or read book A World of Weather written by Lee Michael Grenci and published by . This book was released on 2010 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Advanced Spectral Modeling Development written by and published by . This book was released on 1992 with total page 85 pages. Available in PDF, EPUB and Kindle. Book excerpt: This report describes the results of a basic research program to develop advanced spectral modeling techniques to treat a variety of current topics in spectroscopy and radiative transfer relevant to the modeling of atmospheric transmission and radiance fields. These include optimizing multiple scattering, surface properties, line coupling, line shapes, interferometric instrument function, and model validation. The overall goal of this research was the improvement of transmittance/radiance simulation modeling physics through continual model validation of results. Results of this study will enhance the capability to model atmospheric transmission and emission. The report is divided into two sections based on model physics areas which were investigated in the course of the contract.
Download or read book Flexible Global Ocean Atmosphere Land System Model written by Tianjun Zhou and published by Springer Science & Business Media. This book was released on 2013-11-19 with total page 468 pages. Available in PDF, EPUB and Kindle. Book excerpt: Coupled climate system models are of central importance for climate studies. A new model known as FGOALS ( the Flexible Global Ocean-Atmosphere-Land System model), has been developed by the Sate Key Laboratory of Numerical Modeling for Atmospheric Sciences and Geophysical Fluid Dynamics, Institute of Atmospheric Physics, Chinese Academy of Sciences (LASG/IAP, CAS), a first-tier national geophysical laboratory. It serves as a powerful tool, both for deepening our understanding of fundamental mechanisms of the climate system and for making decadal prediction and scenario projections of future climate change. "Flexible Global Ocean-Atmosphere-Land System Model: A Modeling Tool for the Climate Change Research Community” is the first book to offer systematic evaluations of this model’s performance. It is comprehensive in scope, covering both developmental and application-oriented aspects of this climate system model. It also provides an outlook of future development of FGOALS and offers an overview of how to employ the model. It represents a valuable reference work for researchers and professionals working within the related areas of climate variability and change. Prof. Tianjun Zhou, Yongqiang Yu, Yimin Liu and Bin Wang work at LASG, the Institute of Atmospheric Physics, Chinese Academy of Sciences, China.
