Download or read book Measuring the Skill of an Ocean Model Under Eddy topographic Effects Based on a Global Inventory of Long term Current Meters written by G. Holloway and published by . This book was released on 1995 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Topographic Effects in the Ocean written by and published by . This book was released on 1995 with total page 284 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Journal of Physical Oceanography written by and published by . This book was released on 1997-05 with total page 1040 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book WoceNotes written by and published by . This book was released on 1995 with total page 144 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Eddies in Marine Science written by A. R. Robinson and published by Springer Science & Business Media. This book was released on 2012-12-06 with total page 871 pages. Available in PDF, EPUB and Kindle. Book excerpt: It is now well known that the mid-ocean flow is almost everywhere domi nated by so-called synoptic or meso-scale eddies, rotating about nearly vertical axes and extending throughout the water column. A typical mid ocean horizontal scale is 100 km and a time scale is 100 days: these meso scale eddies have swirl speeds of order 10 cm s -1 which are usually con siderably greater than the long-term average flow. Many types of eddies with somewhat different scales and characteristics have been identified. The existence of such eddies was suspected by navigators more than a century ago and confirmed by the world of C. O'D. Iselin and V. B. Stock man in the 1930's. Measurements from RIV Aries in 1959/60, using the then newly developed neutrally buoyant floats, indicated the main char acteristics of the eddies in the deep ocean of the NW Atlantic while a se ries of Soviet moored current-meter arrays culminated, in POLYGON- 1970, in the explicit mapping of an energetic anticyclonic eddy in the tropical NE Atlantic. In 1973 a large collaborative (mainly U. S. , U. K. ) program, MODE-I, produced synoptic charts for an area of the NW At lantic and confirmed the existence of an open ocean eddy field and es tablished its characteristics. Meso-scale eddies are now known to be of interest and importance to marine chemists and biologists as well as to physical oceanographers and meteorologists.
Download or read book Oceanic Abstracts written by and published by . This book was released on 1997 with total page 798 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Stochastic Modelling in Physical Oceanography written by Robert Adler and published by Springer Science & Business Media. This book was released on 2012-12-06 with total page 473 pages. Available in PDF, EPUB and Kindle. Book excerpt: The study of the ocean is almost as old as the history of mankind itself. When the first seafarers set out in their primitive ships they had to understand, as best they could, tides and currents, eddies and vortices, for lack of understanding often led to loss of live. These primitive oceanographers were, of course, primarily statisticians. They collected what empirical data they could, and passed it down, ini tially by word of mouth, to their descendants. Data collection continued throughout the millenia, and although data bases became larger, more re liable, and better codified, it was not really until surprisingly recently that mankind began to try to understand the physics behind these data, and, shortly afterwards, to attempt to model it. The basic modelling tool of physical oceanography is, today, the partial differential equation. Somehow, we all 'know" that if only we could find the right set of equations, with the right initial and boundary conditions, then we could solve the mysteries of ocean dynamics once and for all.
Download or read book Meteorological and Geoastrophysical Abstracts written by and published by . This book was released on 1996 with total page 480 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Ocean Modeling in an Eddying Regime written by Matthew W. Hecht and published by John Wiley & Sons. This book was released on 2013-04-30 with total page 654 pages. Available in PDF, EPUB and Kindle. Book excerpt: Published by the American Geophysical Union as part of the Geophysical Monograph Series, Volume 177. This monograph is the first to survey progress in realistic simulation in a strongly eddying regime made possible by recent increases in computational capability. Its contributors comprise the leading researchers in this important and constantly evolving field. Divided into three parts Oceanographic Processes and Regimes: Fundamental Questions Ocean Dynamics and State: From Regional to Global Scale, and Modeling at the Mesoscale: State of the Art and Future Directions The volume details important advances in physical oceanography based on eddy resolving ocean modeling. It captures the state of the art and discusses issues that ocean modelers must consider in order to effectively contribute to advancing current knowledge, from subtleties of the underlying fluid dynamical equations to meaningful comparison with oceanographic observations and leading-edge model development. It summarizes many of the important results which have emerged from ocean modeling in an eddying regime, for those interested broadly in the physical science. More technical topics are intended to address the concerns of those actively working in the field.
Download or read book Eddies in Marine Science written by A R Robinson and published by . This book was released on 1983-09-01 with total page 644 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Model Skill Measured Against Long term Current Meters written by G. Holloway and published by . This book was released on 1995 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Eddy current interactions in the ocean and their impacts on climate ecology and biology written by Feng Nan and published by Frontiers Media SA. This book was released on 2023-08-07 with total page 226 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Measuring Ocean Currents written by Antony Joseph and published by Newnes. This book was released on 2013-08-12 with total page 447 pages. Available in PDF, EPUB and Kindle. Book excerpt: Measuring Ocean Currents: Tools, Technologies, and Data covers all major aspects of ocean current measurements in view of the implications of ocean currents on changing climate, increasing pollution levels, and offshore engineering activities. Although more than 70% of the Earth is covered by ocean, there is limited information on the countless fine- to large-scale water motions taking place within them. This book fills that information gap as the first work that summarizes the state-of-the-art methods and instruments used for surface, subsurface, and abyssal ocean current measurements. Readers of this book will find a wealth of information on Lagrangian measurements, horizontal mapping, imaging, Eulerian measurements, and vertical profiling techniques. In addition, the book describes modern technologies for remote measurement of ocean currents and their signatures, including HF Doppler radar systems, satellite-borne sensors, ocean acoustic tomography, and more. Crucial aspects of ocean currents are described in detail as well, including dispersion of effluents discharged into the sea and transport of beneficial materials—as well as environmentally hazardous materials—from one region to another. The book highlights several important practical applications, showing how measurements relate to climate change and pollution levels, how they affect coastal and offshore engineering activities, and how they can aid in tsunami detection. - Coverage of measurement, mapping and profiling techniques - Descriptions of technologies for remote measurement of ocean currents and their signatures - Reviews crucial aspects of ocean currents, including special emphasis on the planet-spanning thermohaline circulation, known as the ocean's "conveyor belt," and its crucial role in climate change
Download or read book The Ocean and Cryosphere in a Changing Climate written by Intergovernmental Panel on Climate Change (IPCC) and published by Cambridge University Press. This book was released on 2022-04-30 with total page 755 pages. Available in PDF, EPUB and Kindle. Book excerpt: The Intergovernmental Panel on Climate Change (IPCC) is the leading international body for assessing the science related to climate change. It provides policymakers with regular assessments of the scientific basis of human-induced climate change, its impacts and future risks, and options for adaptation and mitigation. This IPCC Special Report on the Ocean and Cryosphere in a Changing Climate is the most comprehensive and up-to-date assessment of the observed and projected changes to the ocean and cryosphere and their associated impacts and risks, with a focus on resilience, risk management response options, and adaptation measures, considering both their potential and limitations. It brings together knowledge on physical and biogeochemical changes, the interplay with ecosystem changes, and the implications for human communities. It serves policymakers, decision makers, stakeholders, and all interested parties with unbiased, up-to-date, policy-relevant information. This title is also available as Open Access on Cambridge Core.
Download or read book Ocean Modeling and Parameterization written by Eric P. Chassignet and published by Springer. This book was released on 1998-08-31 with total page 451 pages. Available in PDF, EPUB and Kindle. Book excerpt: The realism of large scale numerical ocean models has improved dra matically in recent years, in part because modern computers permit a more faithful representation of the differential equations by their algebraic analogs. Equally significant, if not more so, has been the improved under standing of physical processes on space and time scales smaller than those that can be represented in such models. Today, some of the most challeng ing issues remaining in ocean modeling are associated with parameterizing the effects of these high-frequency, small-space scale processes. Accurate parameterizations are especially needed in long term integrations of coarse resolution ocean models that are designed to understand the ocean vari ability within the climate system on seasonal to decadal time scales. Traditionally, parameterizations of subgrid-scale, high-frequency mo tions in ocean modeling have been based on simple formulations, such as the Reynolds decomposition with constant diffusivity values. Until recently, modelers were concerned with first order issues such as a correct represen tation of the basic features of the ocean circulation. As the numerical simu lations become better and less dependent on the discretization choices, the focus is turning to the physics of the needed parameterizations and their numerical implementation. At the present time, the success of any large scale numerical simulation is directly dependent upon the choices that are made for the parameterization of various subgrid processes.
Download or read book A Feasibility Demonstration of Ocean Model Eddy resolving Nowcast forecast Skill Using Satellite Altimeter Data written by Harley E. Hurlburt and published by . This book was released on 2000 with total page 23 pages. Available in PDF, EPUB and Kindle. Book excerpt: A 1/16 deg Pacific Ocean model north of 20 deg S and a 1/4 deg global ocean model are used to assimilate satellite altimeter data and then to perform month-long forecasts initialized from the data assimilative states. The results constitute a feasibility demonstration of ocean model eddy-resolving nowcast/forecast skill using altimeter data. In particular they demonstrate: (1) that satellite altimetry is an effective observing system for mesoscale oceanic features, (2) that an ocean model with high enough resolution can be a skillful dynamical interpolator for satellite altimeter data in depicting mesoscale oceanic variability, and (3) that the high resolution ocean model can provide skillful forecasts of mesoscale variability for at least a month, when model assimilation of the altimeter data is used to define the initial state.
Download or read book The Ocean Mesoscale in a Warming World written by Nathan Beech and published by . This book was released on 2024 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: State-of-the-art climate models and computing infrastructure are now able to resolve mesoscale ocean eddy activity in many contexts. However, in computationally intensive model applications, such as the Coupled Model Intercomparison Project (CMIP) or simulations of the high latitudes, grid resolutions largely remain eddy-parameterizing due to resource constraints. These missing mesoscale processes are understood to be crucial drivers of ocean circulation and climate and may become still more relevant in the context of anthropogenic climate change. To overcome the computational limitations of traditional models, multiscale modeling strategies have been developed which can distribute grid resolution and resources based on resolution requirements and research goals. Here, several strategies for resolving the mesoscale using multiscale methods are described and the results of their implementation with the Finite volumE Sea ice Ocean Model (FESOM) are reported. In the first application, FESOM participates in CMIP6 with the strategy of concentrating computational resources on the major eddy-rich regions of the ocean. The resulting simulations are able to reproduce between 51 and 82% of observed eddy kinetic energy (EKE) in each region and project substantial climate change impacts on mesoscale activity for the first time at such a scale. The results include a poleward shift of eddy activity in most western boundary currents; EKE intensification in the Antarctic Circumpolar Current (ACC), Brazil and Malvinas Currents, and Kuroshio Current; EKE decline in the Gulf Stream; and intensification of Agulhas leakage. In a second application, FESOM is used to concentrate computational resources in the Southern Ocean and cost-reducing modeling strategies are used to enable fully eddy-resolving climate change projections with the regionally focused grid. The simulations faithfully reproduce EKE in the Southern Ocean and project intensified eddy activity in line with the CMIP6 analysis. The climate change signal is difficult to reliably discern from natural variability after 1 °C of warming, but becomes clear after 4 °C. Finally, the high-resolution Southern Ocean simulations are used to investigate high-latitude eddy activity where ice cover and low eddy size make observations and traditional modeling methods difficult. Detailed, near circumpolar mesoscale activity is detected and related to gyre circulation, the Antarctic Slope Current, and bathymetry. There is a strong seasonal cycle which suppresses winter eddy activity at the surface and selectively dampens cyclonic eddies. After prolonged anthropogenic warming, broad intensification of eddy activity occurs alongside regional decline, ACC eddy activity encroaches further into the high latitudes, and the seasonal cycle is diminished. Collectively, this work demonstrates the effectiveness of multiscale modeling in reducing the cost of resolving mesoscale ocean activity, facilitating the study of eddy activity and its interactions with the broader climate in previously unachievable contexts.
