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Author: Stephen Michael Schrobo
Publisher:
ISBN:
Category : Meteorology
Languages : en
Pages : 0
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Book Description
A channeled model with a fine resolution nested grid is used to study the flow over a mountain range. The basic primitive equation model is frictionless and adiabatic, with no vertical shear. The nesting is accomplished using a scheme C staggered grid arrangement. The solutions are obtained for three categories: (a) coarse mesh solution, (b) uniform fine mesh solution, and (c) nested solution. Comparisons are made between solutions first with no mountain present, then with a mountain. During the early stages of the integration, the nested grid solution is improved over the coarse mesh solution. Difficulties arise at the boundaries, through, in both the coarse and fine meshes. Detailed discussions relating to these problems are presented, with suggestions on alternative boundary conditions. (Author).
Author: Stephen Michael Schrobo
Publisher:
ISBN:
Category : Meteorology
Languages : en
Pages : 0
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Book Description
A channeled model with a fine resolution nested grid is used to study the flow over a mountain range. The basic primitive equation model is frictionless and adiabatic, with no vertical shear. The nesting is accomplished using a scheme C staggered grid arrangement. The solutions are obtained for three categories: (a) coarse mesh solution, (b) uniform fine mesh solution, and (c) nested solution. Comparisons are made between solutions first with no mountain present, then with a mountain. During the early stages of the integration, the nested grid solution is improved over the coarse mesh solution. Difficulties arise at the boundaries, through, in both the coarse and fine meshes. Detailed discussions relating to these problems are presented, with suggestions on alternative boundary conditions. (Author).
Author:
Publisher:
ISBN:
Category : Aeronautics
Languages : en
Pages : 652
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Book Description
Author: Wade H. Shafer
Publisher: Springer Science & Business Media
ISBN: 1468436201
Category : Science
Languages : en
Pages : 306
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Book Description
Masters Theses in the Pure and Applied Sciences was first conceived, published, and dis seminated by the Center for Information and Numerical Data Analysis and Synthesis (CINDAS) * at Purdue University in 1957, starting its coverage of theses with the academic year 1955. Beginning with Volume 13, the printing and dissemination phases of the ac tivity were transferred to University Microfilms/Xerox of Ann Arbor, Michigan, with the thought that such an arrangement would be more beneficial to the academic and general scientific and technical community. After five years of this joint undertaking we had concluded that it was in the interest of all concerned if the printing and distribution of the volume were handled by an international publishing house to assure improved service and broader dissemination. Hence, starting with Volume 18, Masters Theses in the Pure and Applied Sciences has been disseminated on a worldwide basis by Plenum Publishing Corporation of New York, and in the same year the coverage was broadened to include Canadian universities. All back issues can also be ordered from Plenum. We have reported in Volume 23 (thesis year 1978) a total of 10,148 theses titles from 27 Canadian and 220 United States universities. We are sure that this broader base for theses titles reported will greatly enhance the value of this important annual reference work. While Volume 23 reports these submitted in 1978, on occasion, certain universities do report theses submitted in previous years but not reported at the time.
Author: Gerhard H. Jirka
Publisher: CRC Press
ISBN: 9780203027325
Category : Science
Languages : en
Pages : 692
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Book Description
This text presents the key findings of the International Symposium held in Delft in 2003, which explored the process of shallow flows. Shallow flows are found in lowland rivers, lakes, estuaries, bays, coastal areas and in density-stratified atmospheres, and may be observed in puddles, as in oceans. They impact on the life and work of a w
Author: James Keith DeBoer
Publisher:
ISBN:
Category : Meteorology
Languages : en
Pages : 47
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Book Description
The validity of linear smoothing of topography for numerical weather prediction and the variation of mountain drag with mountain height and static stability are examined in the study. In the model a constant geostrophic current is perpendicular to the mountain range and the height of the mountain is independent of y. The hydrostatic Boussinesq equations are used with motion bounded at the top by a rigid plane at z = D.A modified coordinate system similar to Phillips' sigma system was used. Solutions were obtained using a smoothed mountain profile. These solutions were compared with smoothed solutions obtained from the unsmoothed mountain. The comparison of these solutions shows that an error is introduced when non-linear terms become sufficiently large. Values of the mountain drag for differing values of mountain height at a given static stability and for differing values of static stability at a given mountain height were computed. Mountain drag was found to vary quadratically with mountain height and linearly with static stability. (Author).
Author: Fotini K. Chow
Publisher: Springer Science & Business Media
ISBN: 9400740980
Category : Science
Languages : en
Pages : 760
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Book Description
This book provides readers with a broad understanding of the fundamental principles driving atmospheric flow over complex terrain and provides historical context for recent developments and future direction for researchers and forecasters. The topics in this book are expanded from those presented at the Mountain Weather Workshop, which took place in Whistler, British Columbia, Canada, August 5-8, 2008. The inspiration for the workshop came from the American Meteorological Society (AMS) Mountain Meteorology Committee and was designed to bridge the gap between the research and forecasting communities by providing a forum for extended discussion and joint education. For academic researchers, this book provides some insight into issues important to the forecasting community. For the forecasting community, this book provides training on fundamentals of atmospheric processes over mountainous regions, which are notoriously difficult to predict. The book also helps to provide a better understanding of current research and forecast challenges, including the latest contributions and advancements to the field. The book begins with an overview of mountain weather and forecasting chal- lenges specific to complex terrain, followed by chapters that focus on diurnal mountain/valley flows that develop under calm conditions and dynamically-driven winds under strong forcing. The focus then shifts to other phenomena specific to mountain regions: Alpine foehn, boundary layer and air quality issues, orographic precipitation processes, and microphysics parameterizations. Having covered the major physical processes, the book shifts to observation and modelling techniques used in mountain regions, including model configuration and parameterizations such as turbulence, and model applications in operational forecasting. The book concludes with a discussion of the current state of research and forecasting in complex terrain, including a vision of how to bridge the gap in the future.
Author: Nelson L. Seaman
Publisher:
ISBN:
Category : Cloud physics
Languages : en
Pages : 86
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Book Description
A hydrostatic primitive equation meteorological model has been adapted to the small end of mesoscale and applied to two cases of wintertime flow in southern Wyoming. Emphasis has been placed on simulation of orographic, and low-level thermal and frictional forcing processes that modify the larger synoptic scale flow. The experiments considered two scales of mesoscale forcing in three-dimensional domains: (1) the 200-250 km scale in which mountain ranges withing the Rocky Mountain region can be resolved, and (2) the 30-40 km scale in which localized flow about a particular terrain feature can be simulated. The model produced reasonable simulations on both domain scales that are in general agreement with standard theories of orographic and thermally forced flows. Most significantly, comparison of numerical solutions with aircraft observations in the domain revealed that the model produced detailed and accurate results in realistic, complex situations. The considerable skill demonstrated by the model on the small end of the mesoscale indicates important applications are possible. Such a numerical model may be highly useful in providing guidance for such tasks as power plant sight studies, wind energy prospecting, and wintertime precipitation enhancement programs.
Author:
Publisher:
ISBN:
Category : Aeronautics
Languages : en
Pages : 508
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Book Description
Author:
Publisher:
ISBN:
Category : Science
Languages : en
Pages : 848
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Author: International Conference on Numerical Modelling of River, Channel and Overland Flow for Water Resources and Environmental Applications
Publisher:
ISBN:
Category :
Languages : en
Pages : 12
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Book Description
