Download or read book Gulf Stream Variability and Coastal Circulation Near Cape Hatteras written by Shun Mao and published by . This book was released on 2023 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: The region near Cape Hatteras, North Carolina is a significant oceanographic area where the Gulf Stream (GS) transitions from a continental slope-attached flow to an open ocean free jet. Here, the GS interacts with the equatorward-flowing Deep Western Boundary Current (DWBC). Such interaction, along with the convergence of shelf and slope water from the Middle Atlantic Bight (MAB) and the South Atlantic Bight (SAB), results in a substantial net export of shelf waters to the open ocean. Consequently, this region facilitates a complex exchange between the continental shelf and the open ocean, influenced by various factors such as the variability of the western boundary current, atmospheric forcing, and the characteristics of shelf water. To study the GS variability and coastal circulation in this region during 2017-2018, this dissertation employs two sets of advanced data-assimilative ocean reanalyses. The first set utilizes a high-resolution (7-km) ocean reanalysis that employs a 4-dimensional variational (4DVAR) data assimilation algorithm. It incorporates satellite-derived sea surface height and temperature measurements, as well as in situ temperature and salinity profiles. The reliability of the model is confirmed by comparing its GS position and three-dimensional mean kinetic energy with historical satellite and in situ observations. The continuous ocean state estimates obtained from this reanalysis are used to analyze eddy kinetic energy conversion and cross-stream eddy heat and salt fluxes. The study reveals that GS meanders primarily trigger kinetic energy conversion, and it identifies significant inverse energy cascading during GS-eddy interactions. Furthermore, the analysis demonstrates that the cross-stream eddy heat and salt fluxes off Cape Hatteras predominantly flow onshore throughout the two-year study period. The second set of advanced ocean reanalysis used in this study features a very high resolution (800-m) model, aiming to explore the velocity structure variability off Cape Hatteras. The model's high realism is validated by comparing it with independent observations of ocean velocity and density. Using rotated Empirical Orthogonal Function analysis, the study identifies three leading modes that characterize the variability of the western boundary currents throughout the water column: 1) GS meandering, 2) wind forcing, and 3) the influence of the DWBC and upper-ocean eddies. Additionally, a particle-tracking framework is employed using the same very high resolution (800-m) reanalysis to examine the export patterns and pathways of MAB surface shelf water. Through a two-year continuous near-surface particle-tracking simulation, over 700 daily snapshots of horizontal distributions of MAB shelf water are obtained. Applying image clustering to these snapshots, the study identifies three primary export patterns of MAB shelf water, which correspond closely to three major coastal circulation scenarios near Cape Hatteras: 1) abrupt entrainment, 2) gradual entrainment, 3) southward transport. These results are consistent with earlier analysis based on limited drifter observations, but also reveal the significant impact of tropical cyclones on the surface transport in the area. In summary, this dissertation research utilizes two sets of advanced ocean reanalyses to enhance our understanding of the GS energetics and shelf-open ocean dynamics in the coastal circulation near Cape Hatteras. It emphasizes the importance of integrating observations from advanced observational infrastructure, high-resolution numerical modeling, and state-of-the-art data assimilation techniques to achieve a comprehensive understanding and predictive capability of the processes and dynamics in this critical dynamic oceanic region.
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 Gulfstream written by United States. National Weather Service and published by . This book was released on 1975 with total page 292 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Gulfstream written by and published by . This book was released on 1976 with total page 208 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book The Northern North Atlantic written by Priska Schäfer and published by Springer Science & Business Media. This book was released on 2001-04-02 with total page 520 pages. Available in PDF, EPUB and Kindle. Book excerpt: The northern North Atlantic is one of the regions most sensitive to past and present global changes. This book integrates the results of an interdisciplinary project studying the properties of the Greenland-Iceland-Norwegian Seas and the processes of pelagic and benthic particle formation, particle transport, and deposition in the deep-sea sediments. Ice-related and biogeochemical processes have been investigated to decipher the spatial and temporal variability of the production and fate of organic carbon in this region. Isotopic stratigraphy, microfossil assemblages and paleotemperatures are combined to reconstruct paleoceanographic conditions and to model past climatic changes in the Late Quaternary. The Greenland-Iceland-Norwegian Seas can now be considered one of the best studied subbasins of the world`s oceans.
Download or read book Kuroshio Current written by Takeyoshi Nagai and published by John Wiley & Sons. This book was released on 2019-06-05 with total page 326 pages. Available in PDF, EPUB and Kindle. Book excerpt: An interdisciplinary study of the Kuroshio nutrient stream The surface water of the Kuroshio, a western boundary current in the North Pacific Ocean, is nutrient-depleted and has relatively low primary productivity, yet abundant fish populations are supported in the region. This is called the “Kuroshio Paradox”. Kuroshio Current: Physical, Biogeochemical and Ecosystem Dynamics presents research from a multidisciplinary team that conducted observational and modeling studies to investigate this contradiction. This timely and important contribution to the ocean sciences literature provides a comprehensive analysis of the Kuroshio. Volume highlights include: New insights into the role of the Kuroshio as a nutrient stream The first interdisciplinary examination of the Kuroshio Paradox Reflections on the influence of the Kuroshio on Japanese culture Research results on both the lower and higher trophic levels in the Kuroshio ecosystem Comparisons of nutrient dynamics in the Kuroshio and Gulf Stream Predictions of ecosystem responses to future climate variability
Download or read book Oceanographic processes linking nearshore continental shelf and shelf break written by Kuoping Chiang and published by Frontiers Media SA. This book was released on 2023-02-27 with total page 534 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 Science & Business Media. This book was released on 2013-04-18 with total page 469 pages. Available in PDF, EPUB and Kindle. Book excerpt: In this book, the methodology of dynamical systems theory is applied to investigate the physics of the global ocean circulation. Topics include the dynamics of the Gulf Stream in the Atlantic Ocean, the stability of the thermohaline circulation and the El Niño/Southern Oscillation phenomenon in the Tropical Pacific. On the other hand, the book also deals with the numerical methods for applying bifurcation analysis on large dimensional dynamical systems, with thousands or more degrees of freedom, which arise through discretization of ocean models. The novel approach in understanding the phenomena of climate variability is through a systematic analysis within a hierarchy of models using these techniques. In this way, a nice overview is obtained of the relations between the results of the different models within the hierarchy. Mechanistic description of the physics of the results is provided and, where possible, links with results of state-of-the-art models and observations are sought. The reader is expected to have a background in basic incompressible fluid dynamics and applied mathematics, although the level of the text is mixed and sometimes quite introductory. Each chapter is rather self-contained and many details of derivations are provided. The book is aimed at graduate students and researchers in meteorology, oceanography, and related fields who are interested in tackling fundamental problems in dynamical oceanography and climate dynamics.
Download or read book Spring Meeting written by American Geophysical Union. Meeting and published by . This book was released on 1998 with total page 476 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Selected Water Resources Abstracts written by and published by . This book was released on 1978 with total page 570 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Los Alamos Science written by and published by . This book was released on 2003 with total page 268 pages. Available in PDF, EPUB and Kindle. Book excerpt:
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 United States Coast Pilot written by and published by . This book was released on 1991 with total page 408 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Integrative Study of the Mean Sea Level and Its Components written by Anny Cazenave and published by Springer. This book was released on 2017-04-28 with total page 408 pages. Available in PDF, EPUB and Kindle. Book excerpt: This volume presents the most recent results of global mean sea level variations over the satellite altimetry era (starting in the early 1990s) and associated contributions, such as glaciers and ice sheets mass loss, ocean thermal expansion, and land water storage changes. Sea level is one of the best indicators of global climate changes as it integrates the response of several components of the climate system to external forcing factors (including anthropogenic forcing) and internal climate variability. Providing long, accurate records of the sea level at global and regional scales and of the various components causing sea level changes is of crucial importance to improve our understanding of climate processes at work and to validate the climate models used for future projections. The Climate Change Initiative project of the European Space Agency has provided a first attempt to produce consistent and continuous space-based records for several climate parameters observable from space, among them sea level. This book presents current knowledge of the sea level budget over the altimetry era and 20th century. Previously published in Surveys in Geophysics, Volume 38, Issue 1, 2017
Download or read book Advances in marine heatwave interactions written by Sarah Elizabeth Perkins-Kirkpatrick and published by Frontiers Media SA. This book was released on 2023-04-26 with total page 303 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Collected Reprints Atmospheric Physics and Chemistry Laboratory written by Atmospheric Physics and Chemistry Laboratory and published by . This book was released on 1977 with total page 644 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book North Carolina Coastal Oceanography Symposium written by Robert Y. George and published by . This book was released on 1989 with total page 626 pages. Available in PDF, EPUB and Kindle. Book excerpt:
