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Time And Space Resolution And Mixed Layer Model Accuracy
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Book Synopsis Time and Space Resolution and Mixed Layer Model Accuracy by : David M. Hone
Download or read book Time and Space Resolution and Mixed Layer Model Accuracy written by David M. Hone and published by . This book was released on 1997-03-01 with total page 68 pages. Available in PDF, EPUB and Kindle. Book excerpt: The oceanic turbulent boundary layer is a critical region to understand for oceanic and atmospheric prediction. This thesis answers two fundamental questions: (1) what is the response of the ocean mixed layer system to transient forcing at the air sea surface? (2) what is the necessary time and space resolution in an ocean mixed layer model to resolve important transient responses? Beginning with replication of de Szoeke and Rhines' work, additional physical processes were added to include more realistic viscous dissipation and anisotropy in the three-dimensional turbulent kinetic energy (TKE) budget. These refinements resulted in modification of de Szoeke and Rhines' findings. Firstly, TKE unsteadiness is important for a minimum of 10 to the 5th power seconds. Secondly, viscous dissipation should not be approximated as simply proportional to shear production. Thirdly, entrainment shear production remains significant for a minimum of one pendulum-day. The required temporal model resolution is dependent on the phenomena to be studied. This study focused on the diurnal, synoptic, and annual cycles, which the one-hour time step of the Naval Postgraduate School model adequately resolves. The study of spatial resolution showed unexpectedly that model skill was comparable for 1 m, 10 m and even 20 m vertical grid spacing.
Book Synopsis Scientific and Technical Aerospace Reports by :
Download or read book Scientific and Technical Aerospace Reports written by and published by . This book was released on 1995 with total page 538 pages. Available in PDF, EPUB and Kindle. Book excerpt: Lists citations with abstracts for aerospace related reports obtained from world wide sources and announces documents that have recently been entered into the NASA Scientific and Technical Information Database.
Book Synopsis Curricula in the Atmospheric, Oceanic, Hydrologic, and Related Sciences by :
Download or read book Curricula in the Atmospheric, Oceanic, Hydrologic, and Related Sciences written by and published by . This book was released on 1998 with total page 612 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Earth Observing System: MODIS, moderate-resolution imaging spectrometer by :
Download or read book Earth Observing System: MODIS, moderate-resolution imaging spectrometer written by and published by . This book was released on 1987 with total page 166 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Proceedings of the 4th International Seminar on Non-Ideal Compressible Fluid Dynamics for Propulsion and Power by : Martin White
Download or read book Proceedings of the 4th International Seminar on Non-Ideal Compressible Fluid Dynamics for Propulsion and Power written by Martin White and published by Springer Nature. This book was released on 2023-05-01 with total page 242 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book collects the main contributions from the 4th edition of the NICFD conference, organized by the Special Interest Group on Non-Ideal Compressible Fluid Dynamics (SIG- 49). It provides some of the latest research findings in the field of NICFD, relevant to a number of engineering applications related to the conversion of renewable and waste energy sources, like, e.g., organic Rankine cycles, super-critical CO2 cycle power plants, combustors operating with supercritical fluids, and heat pumps. The book reports on research encompassing theoretical, computational, and experimental aspects of the gas-dynamics of non-ideal reactive and non-reactive flows and their impact for the design of internal-flow components (turbomachinery, heat exchangers, combustors). All chapters address challenges related to characterizing the behaviour of non-ideal fluids, where state-of-the-art models are used to predict the thermo-physical properties of both pure and multi-phase fluids.
Book Synopsis Building the European Capacity in Operational Oceanography by : H. Dahlin
Download or read book Building the European Capacity in Operational Oceanography written by H. Dahlin and published by Gulf Professional Publishing. This book was released on 2003-12-04 with total page 728 pages. Available in PDF, EPUB and Kindle. Book excerpt: Full text e-book available as part of the Elsevier ScienceDirect Earth and Planetary Sciences subject collection.
Book Synopsis Satellite Gravity and the Geosphere by : National Research Council
Download or read book Satellite Gravity and the Geosphere written by National Research Council and published by National Academies Press. This book was released on 1997-10-02 with total page 127 pages. Available in PDF, EPUB and Kindle. Book excerpt: For the past three decades, it has been possible to measure the earth's static gravity from satellites. Such measurements have been used to address many important scientific problems, including the earth's internal structure, and geologically slow processes like mantle convection. In principle, it is possible to resolve the time-varying component of the gravity field by improving the accuracy of satellite gravity measurements. These temporal variations are caused by dynamic processes that change the mass distribution in the earth, oceans, and atmosphere. Acquisition of improved time-varying gravity data would open a new class of important scientific problems to analysis, including crustal motions associated with earthquakes and changes in groundwater levels, ice dynamics, sea-level changes, and atmospheric and oceanic circulation patterns. This book evaluates the potential for using satellite technologies to measure the time-varying component of the gravity field and assess the utility of these data for addressing problems of interest to the earth sciences, natural hazards, and resource communities.
Book Synopsis Recent Developments in the Numerics of Nonlinear Hyperbolic Conservation Laws by : Rainer Ansorge
Download or read book Recent Developments in the Numerics of Nonlinear Hyperbolic Conservation Laws written by Rainer Ansorge and published by Springer Science & Business Media. This book was released on 2012-09-14 with total page 325 pages. Available in PDF, EPUB and Kindle. Book excerpt: In January 2012 an Oberwolfach workshop took place on the topic of recent developments in the numerics of partial differential equations. Focus was laid on methods of high order and on applications in Computational Fluid Dynamics. The book covers most of the talks presented at this workshop.
Book Synopsis Analyzing Natural Systems by : Daniel J. Basta
Download or read book Analyzing Natural Systems written by Daniel J. Basta and published by Routledge. This book was released on 2015-09-16 with total page 410 pages. Available in PDF, EPUB and Kindle. Book excerpt: This report was undertaken on local, regional, state and federal levels in the United States to analyse the impact residuals have on environmental quality and to emphasise the need for Residuals- Environmental quality management (REQM). Originally published in 1982, this study brings together information on approaches for analysing natural systems and which factors to consider when choosing an approach. This title will be of interest to students of environmental studies as well as professionals and policy makers.
Book Synopsis The South Atlantic by : Gerold Wefer
Download or read book The South Atlantic written by Gerold Wefer and published by Springer Science & Business Media. This book was released on 2012-12-06 with total page 815 pages. Available in PDF, EPUB and Kindle. Book excerpt: The book presents results of recent projects in oceanography and marine geosciences (e.g. WOCE, JGOFS, PAGES, ODP) regarding present and past circulation in the South Atlantic. The objective of the book is to integrate results from both oceanographic and geological studies. As the connecting link between the Antarctic and the North Atlantic, the South Atlantic plays a crucial role with regard to the heat budget of the North Atlantic and to the biogeochemical budget of the global ocean. New results from studies of meridional water mass and heat transports are presented. The central theme of geological investigations is the reconstruction of current and productivity systems in the South Atlantic during the late Quaternary.
Download or read book Ocean Prediction Workshop 1986 written by and published by . This book was released on 1986 with total page 516 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Direct Simulation of High-speed Mixing Layers by :
Download or read book Direct Simulation of High-speed Mixing Layers written by and published by . This book was released on 1992 with total page 68 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author :Division on Earth and Life Studies Publisher :National Academies Press ISBN 13 :0309259770 Total Pages :252 pages Book Rating :4.3/5 (92 download)
Book Synopsis A National Strategy for Advancing Climate Modeling by : Division on Earth and Life Studies
Download or read book A National Strategy for Advancing Climate Modeling written by Division on Earth and Life Studies and published by National Academies Press. This book was released on 2013-01-24 with total page 252 pages. Available in PDF, EPUB and Kindle. Book excerpt: As climate change has pushed climate patterns outside of historic norms, the need for detailed projections is growing across all sectors, including agriculture, insurance, and emergency preparedness planning. A National Strategy for Advancing Climate Modeling emphasizes the needs for climate models to evolve substantially in order to deliver climate projections at the scale and level of detail desired by decision makers, this report finds. Despite much recent progress in developing reliable climate models, there are still efficiencies to be gained across the large and diverse U.S. climate modeling community. Evolving to a more unified climate modeling enterprise-in particular by developing a common software infrastructure shared by all climate researchers and holding an annual climate modeling forum-could help speed progress. Throughout this report, several recommendations and guidelines are outlined to accelerate progress in climate modeling. The U.S. supports several climate models, each conceptually similar but with components assembled with slightly different software and data output standards. If all U.S. climate models employed a single software system, it could simplify testing and migration to new computing hardware, and allow scientists to compare and interchange climate model components, such as land surface or ocean models. A National Strategy for Advancing Climate Modeling recommends an annual U.S. climate modeling forum be held to help bring the nation's diverse modeling communities together with the users of climate data. This would provide climate model data users with an opportunity to learn more about the strengths and limitations of models and provide input to modelers on their needs and provide a venue for discussions of priorities for the national modeling enterprise, and bring disparate climate science communities together to design common modeling experiments. In addition, A National Strategy for Advancing Climate Modeling explains that U.S. climate modelers will need to address an expanding breadth of scientific problems while striving to make predictions and projections more accurate. Progress toward this goal can be made through a combination of increasing model resolution, advances in observations, improved model physics, and more complete representations of the Earth system. To address the computing needs of the climate modeling community, the report suggests a two-pronged approach that involves the continued use and upgrading of existing climate-dedicated computing resources at modeling centers, together with research on how to effectively exploit the more complex computer hardware systems expected over the next 10 to 20 years.
Book Synopsis Direct and Large-Eddy Simulation by : Bernard J. Geurts
Download or read book Direct and Large-Eddy Simulation written by Bernard J. Geurts and published by Walter de Gruyter GmbH & Co KG. This book was released on 2022-12-05 with total page 343 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book presents a comprehensive overview of the mathematics and physics behind the simulation of turbulent flows and discusses in detail (i) the phenomenology of turbulence in fluid dynamics, (ii) the role of direct and large-eddy simulation in predicting these dynamics, (iii) the multiple considerations underpinning subgrid modelling, and, (iv) the issue of validation and reliability resulting from interacting modelling and numerical errors.
Download or read book HMMR written by and published by . This book was released on 1987 with total page 80 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Earth Observing System written by and published by . This book was released on 1987 with total page 78 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis One-Dimensional Model Predictions of Upper Ocean Temperature Changes Between San Francisco and Hawaii by : Edward F. Steiner
Download or read book One-Dimensional Model Predictions of Upper Ocean Temperature Changes Between San Francisco and Hawaii written by Edward F. Steiner and published by . This book was released on 1981 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: Previous tests of one-dimensional oceanic mixed layer models have generally used long time series of data at specific locations, such as at the ocean weather ships. In this work the Garwood model was used to make a series of predictions of upper ocean thermal structure changes along the shipping track between San Francisco and Hawaii, from 1 January to 16 December 1978. The initial and verifying ocean temperature profiles provided by the National Marine Fisheries Service, were objectively analyzed on a space-time grid, where the spatial dimension was along the shipping track. The grid resolution is 100 km and 15 days, which defines the basic prediction increment. The ocean mixed layer model was driven with the winds and heat fluxes derived from the Fleet Numerical Oceanography Center's atmospheric analyses. A preliminary check of local heat balance was made by comparing the observed change in heat content with the accumulated surface heat flux. Comparison of the observations and the 1-d mixed layer model predictions shows a large variability in model performance. Relatively good predictions were made during periods of shallowing or unchanging mixed layer depth, while poorer prediction occur during periods of rapid deepening. Variability along the track indicates superior performance in the subtropical region, with prediction accuracy decreasing in the region of the subtropical front and the California Current, where physical processes not included in the model are relatively large. (Author).
