Download or read book Dynamical Evaluation of Ocean Models Using the Gulf Stream as an Example written by and published by . This book was released on 2010 with total page 45 pages. Available in PDF, EPUB and Kindle. Book excerpt: Ocean models run with atmospheric forcing but without ocean data assimilation are useful in studies of ocean model dynamics and simulation skill. Models that give realistic simulations with accurate dynamics, when run without data assimilation, are essential for eddy-resolving ocean prediction because of the multiple roles that ocean models must play in ocean nowcasting and forecasting, including dynamical interpolation during data assimilation, representing sparsely observed subsurface ocean features from the mixed layer depth to abyssal currents, converting atmospheric forcing into ocean responses, imposing topographic and geometric constraints, performing ocean forecasts, and providing boundary and initial conditions to nested regional and coastal models. A wide range of ocean dynamics contribute to these different roles. Here we focus on evaluating the dynamics of mid-latitude ocean currents simulated by state-of-the- art, eddy-resolving ocean general circulation models (OGCMs) with high vertical resolution, using the Gulf Stream as an example.
Download or read book The Gulf Stream written by Henry Stommel and published by Univ of California Press. This book was released on 2022-05-27 with total page 262 pages. Available in PDF, EPUB and Kindle. Book excerpt: This title is part of UC Press's Voices Revived program, which commemorates University of California Press’s mission to seek out and cultivate the brightest minds and give them voice, reach, and impact. Drawing on a backlist dating to 1893, Voices Revived makes high-quality, peer-reviewed scholarship accessible once again using print-on-demand technology. This title was originally published in 1965.
Download or read book Operational Oceanography in the 21st Century written by Andreas Schiller and published by Springer Science & Business Media. This book was released on 2011-04-11 with total page 736 pages. Available in PDF, EPUB and Kindle. Book excerpt: Over the past decade the significant advances in real-time ocean observing systems, ocean modelling, ocean data assimilation and super-computing has seen the development and implementation of operational ocean forecast systems of the global ocean. At the conclusion of the Global Ocean Data Assimilation Experiment (GODAE) in 2008 ocean analysis and forecasting services were being supported by 12 international centres. This book is about ocean forecasting - a maturing field which remains an active area of research, and includes such topics as ocean predictability, observing system design, high resolution ocean modelling and ocean data assimilation. It presents the introduction to ocean forecasting which provides a foundation for new opportunities in areas of coupled bio-geochemical forecasting and coupled atmosphere-wave-ocean forecasting. The book describes an updated account of research and development to improve forecast systems, determining how best to service the marine user community with forecast information as well as demonstrating impact to their applications. It also discusses operational centres that are now supporting a range of real-time ocean services including online graphical and data products for their user communities and their feedback on the quality of information. The contents of this book are aimed at early career scientists and professionals with an interest in operational oceanography and related ocean science. There are excellent opportunities for exciting careers in the emerging field of operational oceanography in order to address current and future challenges as well as provide the supporting services to a rapidly growing user community.
Download or read book Validation of the Harvard Open Ocean Model in the Gulf Stream Region written by Allan R. Robinson and published by . This book was released on 1989 with total page 25 pages. Available in PDF, EPUB and Kindle. Book excerpt: During this contract period work was carried out on the evaluation of the Harvard Gulf-Stream forecasting system (GULFCAST). This was a continuation of work carried out under Contract No. N00014-86-K-6002. The Gulfcast system was designed for nowcasts and forecasts of 1 duration. It consisted of a quasigeostrophic dynamical model, feature models for initialization and updating, and an observational base of Infrared SST frontal locations, Geosat altimetric data when available, and a weekly dedicated AXBT flight designed to maintain accuracy via critical in situ data input (Robinson et at., EOS, TOR, 70 (45) 1464-1473, 1989). for over two years of real time forecasting, the Geosat determined standard deviation of the forecast stream axis offset was about 30 km, comparable to the noise level of its determination (Glenn et at., JCG 96(C4) 7145-7166, 1991). The system correctly forecasts approximately 75 percent of ring birth and reabsorption events.
Download or read book The Gulf Stream written by Bruno Voituriez and published by . This book was released on 2006 with total page 228 pages. Available in PDF, EPUB and Kindle. Book excerpt: This publication explores the extraordinary natural phenomenon of the Gulf Stream effect, tracing its historical discovery and exploration, outlining its causes and dynamics, and examining its profound importance for the marine ecosystems of the Atlantic Ocean.
Download or read book The Gulf Stream written by Henry Stommel and published by . This book was released on 1960 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Nonlinear Physical Oceanography written by Henk A. Dijkstra and published by Springer. This book was released on 2005-05-04 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: Taken from a review of the first edition in SIAM: "This text is different from most others in that it combines several different disciplines and draws on many scientific studies in order to deduce mechanisms of ocean circulation. (...) Therefore (it) cannot be substituted, and (...) it meets its unique goals with clarity and thoroughness".
Download or read book Circulation Model Experiments of the Gulf Stream Using Satellite derived Fields written by Daniel N. Fox and published by . This book was released on 1993 with total page 45 pages. Available in PDF, EPUB and Kindle. Book excerpt: The ability to perform skillful forecasts of the space and time evolution of mesoscale ocean phenomena can significantly improve acoustic surveillance capabilities, search and rescue operators, the performance of weapon systems, and other aspects of naval operations. The Ocean Dynamics and Prediction Branch, Ocean Monitoring and Prediction Section of the Naval Research Laboratory (NRL), Stennis Space Center, MS, is developing an ocean nowcast/forecast capability to permit dynamical interpolation of the limited number of in situ and satellite observations available using a hierarchy of coupled hydrodynamic and thermodynamic models. A series of numerical experiments to predict the evolution of the Gulf Stream were performed. These experiments led to the first system to show significant skill in this area. The forecast system uses the NRL Northwest Atlantic regional primitive equation model and assimilation schemes. The schemes employ both a feature model and statistical correlations derived from the regional climatology of in situ data and long time-base numerical simulations. ... Ocean models, Ocean forecasting, Fronts (Oceanography), Air-sea interaction ABSTRACTS.
Download or read book Numerical Ocean Circulation Modeling written by Aike Beckmann and published by World Scientific. This book was released on 1999-04-29 with total page 342 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book offers a comprehensive overview of the models and methods employed in the rapidly advancing field of numerical ocean circulation modeling. For those new to the field, concise reviews of the equations of oceanic motion, sub-grid-scale parameterization, and numerical approximation techniques are presented and four specific numerical models, chosen to span the range of current practice, are described in detail. For more advanced users, a suite of model test problems is developed to illustrate the differences among models, and to serve as a first stage in the quantitative evaluation of future algorithms. The extensive list of references makes this book a valuable text for both graduate students and postdoctoral researchers in the marine sciences and in related fields such as meteorology, and climate and coupled biogeochemical modeling.
Download or read book Understanding and Predicting the Gulf of Mexico Ocean Dynamics written by Julio Sheinbaum and published by Frontiers Media SA. This book was released on 2024-04-08 with total page 247 pages. Available in PDF, EPUB and Kindle. Book excerpt: For the past several years, a number of research programs have funded significant efforts to advance understanding of and forecasting capabilities for the Gulf of Mexico circulation, including the Loop Current, its associated eddies, and abyssal dynamics. One such program is the National Academies’ Understanding Gulf Ocean Systems initiative, which focuses on improving forecasts of the physical dynamics of the open Gulf of Mexico in space and time scales useful for the reduction of risks to offshore energy exploration and production, as well as for other challenges such as forecasting hurricane intensification and managing fisheries. What has been learned, how can this scientific progress be incorporated into operational models, and what are the remaining gaps in knowledge impeding predictive skill?
Download or read book Nonlinear Physical Oceanography written by Henk A. Dijkstra and published by Springer Science & Business Media. This book was released on 2005-05-04 with total page 548 pages. Available in PDF, EPUB and Kindle. Book excerpt: Taken from a review of the first edition in SIAM: "This text is different from most others in that it combines several different disciplines and draws on many scientific studies in order to deduce mechanisms of ocean circulation. (...) Therefore (it) cannot be substituted, and (...) it meets its unique goals with clarity and thoroughness".
Download or read book Models of Gulf Stream Variability An Overly Brief Review written by Dale B. Haidvogel and published by . This book was released on 1982 with total page 17 pages. Available in PDF, EPUB and Kindle. Book excerpt: Contents: Kinematic properties; Dynamical/energetic properties; Local dynamic models; Eddy-resolving models.
Download or read book Impact of the Current Feedback and Model Resolution on the Atmosphere and Ocean Mixed Layer Over the Gulf Stream written by Jackie Crystal May and published by . This book was released on 2022 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: The atmosphere and the ocean interact through air-sea heat and momentum fluxes. Thesefluxes are critical in ocean, atmosphere, and coupled modeling across a broad range of spatial and temporal scales, from large-scale global modeling to very high-resolution regional studies and from climate studies to operational forecasting. It is important to minimize the air-sea flux errors in order to obtain accurate and realistic model results. This study investigates two sources of air-sea flux errors within the Gulf Stream region during winter months: the horizontal model resolution of the atmosphere and the ocean, and the dynamical coupling and current feedback between the ocean surface currents and the wind stress. Four different atmospheric and ocean coupled model simulations are completed with various combinations of 2 km (submesoscale resolving) and 6 km (submesoscale permitting) grid spacing. Four additional model simulations are completed using the same model resolutions defined in the first four experiments, but the coupling and feedback between the surface currents and the wind stress is included. The dynamical coupling and the current feedback lead to large changes in the surfacestress and stress curl patterns. This leads to a reduction in the ocean's mean and eddy kinetic energy, which largely controls the Gulf Stream path. The dynamical coupling is also found to control the physical gradient related to the atmospheric horizontal momentum advection. The stress gradient largely explains the variability in the horizontal advection when the dynamical coupling is not included, while the current gradient across current direction largely explains the variability in the horizontal advection when the dynamical coupling is included. Additionally, the dynamical coupling and current feedback is found to be important in regulating the mixed layer depth and SST throughout the warm water to the right of the Gulf Stream path due to the horizontal heat advection in the mixed layer. A high-resolution ocean model is found to also be important in influencing the Gulf Stream path, as well as constraining the submesoscale vertical heat fluxes to the ocean's mixed layer. The atmospheric model resolution is found to impact the magnitude of the stress, wind work, sea surface height, and surface currents, in addition to the strength of the horizontal and vertical winds throughout the atmospheric column. The dynamical coupling and current feedback, as well as having a high-resolution atmosphere and ocean, is further found to be important in the vertical extent of the state parameter fields, as well as in the atmospheric circulation patterns.
Download or read book Scientific and Technical Aerospace Reports written by and published by . This book was released on 1976 with total page 984 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Numerical Modeling of Ocean Dynamics written by Zygmunt Kowalik and published by World Scientific. This book was released on 1993 with total page 506 pages. Available in PDF, EPUB and Kindle. Book excerpt: While there are several excellent books dealing with numerical analysis and analytical theory, one has to practically sift through hundreds of references. This monograph is an attempt to partly rectify this situation. It aims to introduce the application of finite-difference methods to ocean dynamics as well as review other complex methods. Systematically presented, the monograph first gives a detailed account of the basics and then go on to discuss the various applications. Recognising the impossibility of covering the entire field of ocean dynamics, the writers have chosen to focus on transport equations (diffusion and advection), shallow water phenomena ? tides, storm surges and tsunamis, three-dimensional time dependent oceanic motion, natural oscillations, and steady state phenomena. The many aspects covered by this book makes it an indispensable handbook and reference source to both professionals and students of this field.
Download or read book Modern Approaches to Data Assimilation in Ocean Modeling written by P. Malanotte-Rizzoli and published by Elsevier. This book was released on 1996-05-10 with total page 469 pages. Available in PDF, EPUB and Kindle. Book excerpt: The field of oceanographic data assimilation is now well established. The main area of concern of oceanographic data assimilation is the necessity for systematic model improvement and ocean state estimation. In this respect, the book presents the newest, innovative applications combining the most sophisticated assimilation methods with the most complex ocean circulation models.Ocean prediction has also now emerged as an important area in itself. The book contains reviews of scientific oceanographic issues covering different time and space scales. The application of data assimilation methods can provide significant advances in the understanding of this subject. Also included are the first, recent developments in the forecasting of oceanic flows.Only original articles that have undergone full peer review are presented, to ensure the highest scientific quality. This work provides an excellent coverage of state-of-the-art oceanographic data assimilation.
Download or read book MATHEMATICAL MODELS Volume II written by Jerzy A. Filar and published by EOLSS Publications. This book was released on 2009-09-19 with total page 510 pages. Available in PDF, EPUB and Kindle. Book excerpt: Mathematical Models is a component of Encyclopedia of Mathematical Sciences in the global Encyclopedia of Life Support Systems (EOLSS), which is an integrated compendium of twenty one Encyclopedias. The Theme on Mathematical Models discusses matters of great relevance to our world such as: Basic Principles of Mathematical Modeling; Mathematical Models in Water Sciences; Mathematical Models in Energy Sciences; Mathematical Models of Climate and Global Change; Infiltration and Ponding; Mathematical Models of Biology; Mathematical Models in Medicine and Public Health; Mathematical Models of Society and Development. These three volumes are aimed at the following five major target audiences: University and College students Educators, Professional practitioners, Research personnel and Policy analysts, managers, and decision makers and NGOs.
