Download or read book Geophysics of Deep Convection and Deep Water Formation in Oceans written by and published by . This book was released on 1987 with total page 15 pages. Available in PDF, EPUB and Kindle. Book excerpt: An important task for geophysicals studying deep convection and deep water formation in the ocean is to investigate various physical mechanisms generating vertical circulation. Two major types of such mechanisms are available so far, namely thermodynamical instability, which generates convection and mixing due largely to surface buoyancy flux brought by not bring release or surface cooling, and dynamical instabilities, which also produce various vertical cells exchanging water masses at different depths.
Download or read book Deep Convection and Deep Water Formation in the Oceans written by P. C. Chu and published by Elsevier Science Limited. This book was released on 1991 with total page 382 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book contains articles presenting current knowledge about the formation and renewal of deep waters in the ocean. These articles were presented at an international workshop at the Naval Postgraduate School in Monterey in March 1990. It is the first book entirely devoted to the topic of deep water formation in which articles have been both selected and reviewed, and it is also the first time authors have addressed both surface and deep mixed layers. Highlighted are: past and recent observations (description and analysis), concepts and models, and modern techniques for future research. Thanks to spectacular advances realised in computing sciences over the last twenty years this volume includes a number of sophisticated numerical models. Observational as well as theoretical studies are presented and a clear distinction is established between open-ocean deep convection and shelf processes, both leading to deep- and bottom-water formation. The main subject addressed is the physical mechanism by which the deep water in the ocean can be renewed. Ventilation occurs at the surface in areas called the gills , where water is mixed and oxygenated before sinking and spreading in the abyss of the deep ocean. This phenomenon is a very active area for both experimentalists and theoreticians because of its strong implications for the understanding of the world ocean circulation and Earth climate. This major theme sheds light on specific and complex processes happening in very restricted areas still controlling three quarters of the total volume of the ocean. All articles include illustrations and a bibliography. This book will be of particular interest to physical oceanographers, earth scientists, environmentalists and climatologists.
Download or read book Deep Convection and Deep Water Formation in the Oceans written by Simon Chu and published by Elsevier. This book was released on 1991-09-17 with total page 395 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book contains articles presenting current knowledge about the formation and renewal of deep waters in the ocean. These articles were presented at an international workshop at the Naval Postgraduate School in Monterey in March 1990. It is the first book entirely devoted to the topic of deep water formation in which articles have been both selected and reviewed, and it is also the first time authors have addressed both surface and deep mixed layers. Highlighted are: past and recent observations (description and analysis), concepts and models, and modern techniques for future research. Thanks to spectacular advances realised in computing sciences over the last twenty years this volume includes a number of sophisticated numerical models. Observational as well as theoretical studies are presented and a clear distinction is established between open-ocean deep convection and shelf processes, both leading to deep- and bottom-water formation. The main subject addressed is the physical mechanism by which the deep water in the ocean can be renewed. Ventilation occurs at the surface in areas called the gills, where water is mixed and oxygenated before sinking and spreading in the abyss of the deep ocean. This phenomenon is a very active area for both experimentalists and theoreticians because of its strong implications for the understanding of the world ocean circulation and Earth climate. This major theme sheds light on specific and complex processes happening in very restricted areas still controlling three quarters of the total volume of the ocean. All articles include illustrations and a bibliography. This book will be of particular interest to physical oceanographers, earth scientists, environmentalists and climatologists.
Download or read book Ocean Circulation and Climate written by John L. Bullister and published by Elsevier Inc. Chapters. This book was released on 2013-10-22 with total page 72 pages. Available in PDF, EPUB and Kindle. Book excerpt: Formation of the deepest waters of the World Ocean occurs in limited regions of the global ocean, primarily in the northern North Atlantic where North Atlantic Deep Water (NADW) is formed, and at a number of sites around the continental margins of Antarctica where Antarctic Bottom Waters (AABW) are formed. The deepwater formation processes play a significant role in determining the large-scale physical and biogeochemical properties of the deep ocean. These limited regions provide a conduit from the surface into the vast volumes of water in the deep ocean. We report in this chapter on observed physical and biochemical changes in the deep ocean and discuss these in the context of deepwater formation. Intensive observation programs in the North Atlantic during the past decades have demonstrated that there have been significant changes in the volumes and properties of Upper and Lower NADW as well as AABW. Studies have found systematic warming of AABW during the past two decades along a number of its major flow pathways, as well as evidence for a reduction in overall volume of AABW in the global deep ocean. Lower NADW, on the other hand, has been undergoing systematic cooling for the past four decades, whereas Upper NADW (primarily Labrador Sea Water) has been exposed to large decadal variability, both in properties and formation rates. In total, the deepwaters of the World Ocean (beneath ca. 2000–3000m) have warmed during the past two decades. Changes in the deep ocean can have enormous influence on Earth’s climate. Warming of the deep ocean makes a significant contribution to global sea level rise. The capacity of the deep ocean to take up and store anthropogenic CO2 has and will have a major impact on the CO2 content of the atmosphere now and far into the future. Paleooceanographic studies have provided evidence that despite the century-long timescales associated with renewal of deepwater, rapid, major changes in deepwater formation and deep ocean circulation have occurred in the past, resulting in rapid changes in Earth’s climate. Continued monitoring and analysis are necessary to follow and understand the changes in the deep ocean—this is a very important component of Earth’s climate.
Download or read book Deep Convection in the Ocean written by and published by . This book was released on 1999 with total page 7 pages. Available in PDF, EPUB and Kindle. Book excerpt: Deep-open ocean convection, the process by which vigorous vertical mixing occurs down to great depths in response to wintertime surface buoyancy losses in the sub-polar seas, is a significant mechanism of water mass transformation. The resultant newly mixed deep water masses form a component of the thermohaline circulation, and hence it is essential to understand the deep convection process if the variability of the meridional circulation, and associated climate fluctuations are to be understood. The rates at which the deep water masses are renewed depend on a complex interaction between processes of different spatial and temporal scales, including thermal plumes associated with vertical convection, baroclinic eddies, and larger scale gyre circulations. The mechanism by which these scales of motion interact and lead to mixing in both vertical and horizontal, as well as the rate at which newly mixed water leaves the formation site, are present subjects of considerable uncertainty. Our accomplishments in studying deep convection include: localization of convection by mesoscale preconditioning; demonstration of the energization of barotropic velocity field by convective interaction with pre-existing eddy field; and identification of the role of both eddies and plumes in generating density-compensated tracer variability.
Download or read book The Nordic Seas written by Burton G. Hurdle and published by Springer Science & Business Media. This book was released on 2012-12-06 with total page 788 pages. Available in PDF, EPUB and Kindle. Book excerpt: " ... as soon as one has traversed the greater part of the wild sea, one comes upon such a huge quantity of ice that nowhere in the whole world has the like been known." "This ice is of a wonderful nature. It lies at times quite still, as one would expect, with openings or large fjords in it; but sometimes its movement is so strong and rapid as to equal that of a ship running before the wind, and it drifts against the wind as often as with it." Kongespeilet - 1250 A.D. ("The Mirror of Kings") Modern societies require increasing amounts influence on the water mass and on the resulting of scientific information about the environment total environment of the region; therefore, cer tain of its characteristics will necessarily be in whieh they live and work. For the seas this information must describe the air above the sea, included.
Download or read book Ocean Processes in Climate Dynamics written by P.M. Malanotte-Rizzoli and published by Springer Science & Business Media. This book was released on 2012-12-06 with total page 449 pages. Available in PDF, EPUB and Kindle. Book excerpt: One of the most crucial but still very poorly understood topics of oceanographic science is the role of ocean processes in contributing to the dynamics of climate and global change. This book presents a series of high level lectures on the major categories of ocean/atmosphere processes. Three of these major issues are the focus of the lectures: (1) air--sea interaction processes; (2) water mass formation, dispersion and mixing; (3) general circulation, with specific emphasis on the thermohaline component. Global examples in the world ocean are provided and discussed in the lectures. In parallel, the Mediterranean Sea is a laboratory basin in providing analogues of the above global processes relevant to climate dynamics. They include the Mediterranean thermohaline circulation with its own `conveyor belt'; intermediate and deep water mass formation and transformations, dispersion and mixing. No other book in the field provides a review of fundamental lectures on these processes, coupled with global examples and their Mediterranean analogues.
Download or read book The Mediterranean Sea written by Gianluca Eusebi Borzelli and published by John Wiley & Sons. This book was released on 2014-03-10 with total page 488 pages. Available in PDF, EPUB and Kindle. Book excerpt: Surface, intermediate, and deep-water processes and their interaction in time and space drive the major ocean circulation of the Mediterranean Sea. All major forcing mechanisms, such as surface wind forcing, buoyancy fluxes, lateral mass exchange, and deep convection determining the global oceanic circulation are present in this body of water. Deep and intermediate water masses are formed in different areas of the ocean layers and they drive the Mediterranean thermohaline cell, which further shows important analogies with the global ocean conveyor belt. The Mediterranean Sea: Temporal Variability and Spatial Patterns is a comprehensive volume that investigates the temporal and spatial variability patterns in the ocean basin. Volume highlights include: Discussions of state-of-the-art physical and biogeochemical properties of the Mediterranean Sea Multiple physical ocean circulation processes, both in time and spatial scales (basin, sub-basin, and mesoscale) How different regional phenomena in the sea influence the biogeochemistry of the basin and the ocean dynamics Spatio-temporal variability of the surface circulation in the western Mediterranean Deep-water variability and inter-basin interactions in the eastern Mediterranean Sea Understanding the link between global ocean circulation patterns and the global climate The Mediterranean Sea will be a valuable resource for geoscientists, oceanographers, and meteorologists.
Download or read book The Oceans and Rapid Climate Change written by Dan Seidov and published by John Wiley & Sons. This book was released on 2001-01-09 with total page 306 pages. Available in PDF, EPUB and Kindle. Book excerpt: Published by the American Geophysical Union as part of the Geophysical Monograph Series, Volume 126. Until a few decades ago, scientists generally believed that significant large-scale past global and regional climate changes occurred at a gradual pace within a time scale of many centuries or millennia. A secondary assumption followed: climate change was scarcely perceptible during a human lifetime. Recent paleoclimatic studies, however, have proven otherwise: that global climate can change extremely rapidly. In fact, there is good evidence that in the past at least regional mean annual temperatures changed by several degrees Celsius on a time scale of several centuries to several decades.
Download or read book Ocean Circulation and Climate written by and published by Elsevier. This book was released on 2001-03-27 with total page 737 pages. Available in PDF, EPUB and Kindle. Book excerpt: The book represents all the knowledge we currently have on ocean circulation. It presents an up-to-date summary of the state of the science relating to the role of the oceans in the physical climate system.The book is structured to guide the reader through the wide range of World Ocean Circulation Experiment (WOCE) science in a consistent way. Cross-references between contributors have been added, and the book has a comprehensive index and unified reference list.The book is simple to read, at the undergraduate level. It was written by the best scientists in the world who have collaborated to carry out years of experiments to better understand ocean circulation.
Download or read book The Physical Oceanography of the Arctic Mediterranean Sea written by Bert Rudels and published by Elsevier. This book was released on 2021-09-19 with total page 536 pages. Available in PDF, EPUB and Kindle. Book excerpt: The Physical Oceanography of the Arctic Mediterranean Sea describes the circulation and the processes in the Arctic Mediterranean, how our present knowledge has developed, and presents recent changes caused by a gradually warmer global climate. The Arctic Mediterranean Sea has been intensively studied in recent years, especially during the fourth International Polar Year, 2007–09, and we have become increasingly aware of the changes presently taking place. This book collects and presents newly acquired knowledge and sets it in perspective to previous studies. Authored by a world-renowned leader in the field, this book explores the role of this small but important sea in the global oceanic circulation and climate—a must-read for researchers and students in the fields of oceanography and climate science. Relates observed features to active processes and provides sufficient background information to understand the theoretical explanations Presents the Arctic Mediterranean Sea in the context of global ocean circulation and climate Presents a modern, comprehensive, and coherent treatment of Arctic (and subarctic) physical oceanography
Download or read book Atmosphere Ocean and Climate Dynamics written by John Marshall and published by Elsevier. This book was released on 2007-12-19 with total page 345 pages. Available in PDF, EPUB and Kindle. Book excerpt: For advanced undergraduate and beginning graduate students in atmospheric, oceanic, and climate science, Atmosphere, Ocean and Climate Dynamics is an introductory textbook on the circulations of the atmosphere and ocean and their interaction, with an emphasis on global scales. It will give students a good grasp of what the atmosphere and oceans look like on the large-scale and why they look that way. The role of the oceans in climate and paleoclimate is also discussed. The combination of observations, theory and accompanying illustrative laboratory experiments sets this text apart by making it accessible to students with no prior training in meteorology or oceanography. * Written at a mathematical level that is appealing for undergraduates andbeginning graduate students* Provides a useful educational tool through a combination of observations andlaboratory demonstrations which can be viewed over the web* Contains instructions on how to reproduce the simple but informativelaboratory experiments* Includes copious problems (with sample answers) to help students learn thematerial.
Download or read book Ocean Circulation written by Open Open University and published by Elsevier. This book was released on 2001-09-17 with total page 288 pages. Available in PDF, EPUB and Kindle. Book excerpt: This second edition retains the general structure of the first edition, buthas been updated in the light of recent oceanographic research, and improvedas a teaching text on the basis of feedback from past students and otherreaders.Notable additions include new sections addressing the topic ofnumerical modelling, and more discussion of natural oscillations in theocean-atmosphere system (previously confined to the El Niño phenomenon). Inparticular, the Chapter on the North Atlantic now includes a discussion ofthe North Atlantic Oscillation, as well as of the Great Salinity Anomaly. Inthe final Chapter, treatment of water mass formation has been updated toreflect recent ideas about the processes involved and how they relate toclimatic change over different time-scales, from decades to millennia. High quality full colour diagramsSubstantial chapter summaries ideal for revisionAnswers, hints and notes for questions at back of the book
Download or read book The Geophysics of Sea Ice written by Norbert Untersteiner and published by Springer. This book was released on 2013-12-19 with total page 1197 pages. Available in PDF, EPUB and Kindle. Book excerpt: Based on the proceedings of the NATO Advanced Study Institute on Air-Sea-Ice Interaction held September 28-October 10, 1981 in Acquafredda di maratea, Italy. Intent is to present the topic of sea ice in the broad and interdisciplinary context of atmospheric and oceanographic science.
Download or read book Variability in Formation Properties and Transport of North Atlantic Deep Water written by Jannes Koelling and published by . This book was released on 2020 with total page 154 pages. Available in PDF, EPUB and Kindle. Book excerpt: North Atlantic Deep Water is found in much of the deep Atlantic Ocean, and its formation in the Labrador and Nordic Seas and subsequent southward export are a vital part of global ocean circulation and Earth's climate system. The overarching goal of this dissertation is to better understand the processes controlling variability of North Atlantic Deep Water formation, properties, and transport in the Atlantic Ocean. Chapter 1 uses data from the central Labrador Sea during winter to estimate the uptake of oxygen associated with deep convection in 2014-15. The results show that intense air-sea exchange results in an uptake of 29.1 ± 3.8 mol m^-2 during the convective season, with much of the flux being associated with injection of air bubbles. Chapter 2 looks at lateral fluxes of carbon, oxygen, and nitrate from the Labrador Sea's boundary current into the center of the basin during the summertime productive season. Lateral fluxes are found to play an important role for the carbon and nitrate budgets immediately below the mixed layer, with respiration rates underestimated by up to 50% if they are ignored. In chapter 3, gravity measurements from satellites are used to investigate variability in ocean circulation. After trends in the data are validated using independent measurements, they are used to study decadal circulation changes of North Atlantic Deep Water in the North Atlantic Ocean. The analysis reveals a strengthening of the interior branch of North Atlantic Deep Water flow, with transport increasing by 13.9 ± 3.7 Sv (1 Sv = 10^6 m^3 s^-1 ), balanced by a weaker southward flow in the Deep Western Boundary Current. A twenty-year record of mooring data is analyzed in chapter 4 to investigate changes in North Atlantic Deep Water transport at 16°N. Multi-decadal variability is observed in the transport time series, and is largely associated with density changes in the lower half of the North Atlantic Deep Water layer, which in turn appear to be caused by changes in the source region. The data are also compared to another transport time series at 26°N, and similarities and differences are discussed.
Download or read book The Many Facets of Complexity Science written by Dimitri Volchenkov and published by Springer Nature. This book was released on 2021-08-30 with total page 210 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book explores recent developments in theoretical research and data analysis of real-world complex systems, organized in three parts, namely Entropy, information, and complexity functions Multistability, oscillations, and rhythmic synchronization Diffusions, rotation, and convection in fluids The collection of works devoted to the memory of Professor Valentin Afraimovich provides a deep insight into the recent developments in complexity science by introducing new concepts, methods, and applications in nonlinear dynamical systems covering physical problems and mathematical modelling relevant to economics, genetics, engineering vibrations, as well as classic problems in physics, fluid and climate dynamics, and urban dynamics. The book facilitates a better understanding of the mechanisms and phenomena in nonlinear dynamics and develops the corresponding mathematical theory to apply nonlinear design to practical engineering. It can be read by mathematicians, physicists, complex systems scientists, IT specialists, civil engineers, data scientists, and urban planners.
Download or read book Arctic Subarctic Ocean Fluxes written by Robert R. Dickson and published by Springer Science & Business Media. This book was released on 2008-03-03 with total page 728 pages. Available in PDF, EPUB and Kindle. Book excerpt: We are only now beginning to understand the climatic impact of the remarkable events that are now occurring in subarctic waters. Researchers, however, have yet to agree upon a predictive model that links change in our northern seas to climate. This volume brings together the body of evidence needed to develop climate models that quantify the ocean exchanges through subarctic seas, measure their variability, and gauge their impact on climate.
