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The Cross Equatorial Structure Of Tropical Instability Waves In Sea Surface Height
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Book Synopsis The Cross-equatorial Structure of Tropical Instability Waves in Sea Surface Height by : John M. Lyman
Download or read book The Cross-equatorial Structure of Tropical Instability Waves in Sea Surface Height written by John M. Lyman and published by . This book was released on 2002 with total page 268 pages. Available in PDF, EPUB and Kindle. Book excerpt: A linearized model with two vertical modes has been developed to understand observed characteristics of monthly variability in the Equatorial Pacific from TOPEX/POSEIDON measurements of Sea Surface Height (SSH). The 2-mode model is obtained from an equatorial beta plane model that has been linearized about a geostrophically balanced mean flow with the state variables projected onto the first 2 baroclinic vertical eigenfunctions. Because in situ measurements of currents in the equatorial Pacific are not available with adequate spatial and temporal resolution, the mean current structure used in the 2-mode model was obtained from the Parallel Ocean Climate Model (P0CM). P0CM was chosen because the monthly variability in the model SSH fields closely resembles that of TOPEX/POSEIDON in dispersion characteristics and cross-equatorial structure. The sensitivity of the 2-mode projection model to the mean equatorial currents is examined by individually increasing and decreasing the various components of the equatorial current system. The eigcnvectors and eigenvalues from this range of current structures are able to reproduce many of the characteristics (phase, amplitude, period, wavenumber arid meridional structure) observed in TOPEX/POSEIDON and P0CM. The most surprising result is that the latitudinal structure of the eigenvector amplitudes south of the equator depends only on the strength of the northern equatorial current system.
Book Synopsis Tropical Instability Waves and Mixing in the Equatorial Pacific Ocean by : Ryan Mahony Holmes
Download or read book Tropical Instability Waves and Mixing in the Equatorial Pacific Ocean written by Ryan Mahony Holmes and published by . This book was released on 2016 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: The unique dynamics of the equatorial oceans play an important role in the El Nino - Southern Oscillation (ENSO) and the ocean's meridional overturning circulation (MOC), both of which are critical processes that drive global climate variability on a range of time-scales. This dissertation makes a number of contributions to our understanding of equatorial ocean dynamics, lateral and vertical mixing at the equator, the behavior of equatorial waves and deep equatorial mixing, with implications for both ENSO and the MOC. The main contributions are: 1) Tropical instability waves (TIWs), the main drivers of lateral eddy mixing in the eastern equatorial Pacific, share a number of dynamical features with submesoscale flows in the mid-latitudes. In particular, their formation depends on the detailed frontal dynamics and sharp vertical gradients around their fringes, with implications for TIW energetics and the accurate representation of TIWs in low-resolution ocean models. 2) TIWs drive modulations in vertical mixing by altering the vertical shear of the Equatorial Undercurrent (EUC) through horizontal vortex stretching. This modulation can drive net sea surface cooling over the eastern Pacific cold tongue that may partially offset the warming driven by TIW lateral mixing. The magnitude of the net cooling depends on the mixing scheme used to parameterize vertical mixing, with implications for the role of TIWs in the mixed-layer heat budget in different ocean models. 3) Downwelling (upwelling) equatorial Kelvin waves can drive large decreases (increases) in the amplitude of the TIW field in the eastern equatorial Pacific and thus TIW-driven lateral and vertical mixing. The Kelvin waves alter the strength and structure of the background flow from which the TIWs gain energy, resulting in complex changes to the TIW energy budget. One major sink of TIW energy, the downward radiation of waves, is strongly altered with implications for deep and abyssal equatorial ocean circulation. 4) Mixing in the abyssal equatorial Pacific can exhibit a seafloor-intensified vertical structure even over smooth topography. The generation and breaking of lee waves over smooth topography at low latitudes is one possible mechanism that could contribute to this mixing. However, downward-propagating equatorial waves generated at the surface by TIWs or wind events could also supply energy for seafloor-intensified mixing through two possible mechanisms, wave trapping due to the horizontal component of Earth's rotation and inertial instability initiated by wave-driven displacement of fluid away from the equator. These results suggest that more attention should be devoted to measuring and understanding mixing over smooth topography in the abyssal equatorial oceans because of its potential role in the global overturning circulation.
Book Synopsis Interhemispheric Water Exchange in the Atlantic Ocean by : G.J. Goni
Download or read book Interhemispheric Water Exchange in the Atlantic Ocean written by G.J. Goni and published by Elsevier. This book was released on 2003-11-12 with total page 523 pages. Available in PDF, EPUB and Kindle. Book excerpt: Recent results from modeling and observational studies demonstrate that the tropical Atlantic is a critical region for processes that maintain the meridional overturning circulation, such as cross-equatorial exchanges, and for sea surface temperature variability that impacts on climate variability of the coupled tropical ocean/atmosphere system. The theme of this book is the inter-hemispheric and inter-gyre exchanges of heat, salt and fresh water, while its goal is to improve the knowledge of the tropical Atlantic dynamics and how it affects the global ocean. A clear understanding of the dynamics of processes that affect the flow of mass and heat between the southern and the northern hemispheres in the upper few hundred meters in the tropical Atlantic and of those associated to the ocean circulation or to surface signals, from decadal, inter-annual to mesoscale periods, becomes necessary to better evaluate their contribution to the interhemispheric mass exchange. These processes are believed to be largely responsible in driving the sea surface temperature, which in turn, is a critical parameter to investigate ocean-atmospheric interactions. Output produced by regional models is also used to complement the observations and to provide additional information on their spatial and temporal variability. The subtropical cells, by bringing water masses subducted in the subtropics to the equator, and zonal currents investigated here contribute to the interhemispheric water exchange. Special attention is also given to the warm and salty anticyclonic rings shed by the North Brazil Current, which are now known to have a much broader impact, not only on interhemispheric water mass transfer, but also on the environment of remote regions. Observations from different sources are blended together, are used to validate model outputs and are also assimilated into models to obtain a more complete and accurate picture of the oceanic circulation and of its time evolution.
Book Synopsis Journal of Physical Oceanography by :
Download or read book Journal of Physical Oceanography written by and published by . This book was released on 2005 with total page 1204 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Dynamics of Seasonal and Interannual Variability in the Equatorial Pacific by : Xuri Yu
Download or read book Dynamics of Seasonal and Interannual Variability in the Equatorial Pacific written by Xuri Yu and published by . This book was released on 1998 with total page 148 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Hydrodynamics of the Equatorial Ocean by : J.C.J. Nihoul
Download or read book Hydrodynamics of the Equatorial Ocean written by J.C.J. Nihoul and published by Elsevier. This book was released on 1983-05-01 with total page 379 pages. Available in PDF, EPUB and Kindle. Book excerpt: Hydrodynamics of the Equatorial Ocean
Download or read book Zonal Jets written by Boris Galperin and published by Cambridge University Press. This book was released on 2019-02-28 with total page 527 pages. Available in PDF, EPUB and Kindle. Book excerpt: Presents a comprehensive, multidisciplinary volume on the physics of zonal jets, from the leading experts, for graduate students and researchers.
Book Synopsis Dissertation Abstracts International by :
Download or read book Dissertation Abstracts International written by and published by . This book was released on 2006 with total page 790 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Dynamics of the Equatorial Ocean by : John P. Boyd
Download or read book Dynamics of the Equatorial Ocean written by John P. Boyd and published by Springer. This book was released on 2017-09-25 with total page 529 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book is the first comprehensive introduction to the theory of equatorially-confined waves and currents in the ocean. Among the topics treated are inertial and shear instabilities, wave generation by coastal reflection, semiannual and annual cycles in the tropic sea, transient equatorial waves, vertically-propagating beams, equatorial Ekman layers, the Yoshida jet model, generation of coastal Kelvin waves from equatorial waves by reflection, Rossby solitary waves, and Kelvin frontogenesis. A series of appendices on midlatitude theories for waves, jets and wave reflections add further material to assist the reader in understanding the differences between the same phenomenon in the equatorial zone versus higher latitudes.
Author :Intergovernmental Panel on Climate Change (IPCC) Publisher :Cambridge University Press ISBN 13 :9781009157971 Total Pages :755 pages Book Rating :4.1/5 (579 download)
Book Synopsis The Ocean and Cryosphere in a Changing Climate by : Intergovernmental Panel on Climate Change (IPCC)
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.
Book Synopsis Learning to Predict Climate Variations Associated with El Nino and the Southern Oscillation by : National Research Council
Download or read book Learning to Predict Climate Variations Associated with El Nino and the Southern Oscillation written by National Research Council and published by National Academies Press. This book was released on 1997-01-12 with total page 188 pages. Available in PDF, EPUB and Kindle. Book excerpt: The TOGA (Tropical Ocean and Global Atmosphere) Program was designed to study short-term climate variations. A 10-year international program, TOGA made El Nino a household word. This book chronicles the cooperative efforts of oceanographers and meteorologists, several U.S. government agencies, many other nations, and international scientific organizations to study El Nino and the Southern Oscillation (ENSO). It describes the progression from being unable to detect the development of large climate variations to being able to make and use rudimentary climate predictions, especially for some tropical countries. It examines the development of the TOGA Program, evaluates its accomplishments, describes U.S. participation in the program, and makes general recommendations for developing better understanding and predictions of climate variations on seasonal to interannual time scales.
Book Synopsis Interacting Climates of Ocean Basins by : Carlos R. Mechoso
Download or read book Interacting Climates of Ocean Basins written by Carlos R. Mechoso and published by Cambridge University Press. This book was released on 2020-11-26 with total page 359 pages. Available in PDF, EPUB and Kindle. Book excerpt: A comprehensive review of interactions between the climates of different ocean basins and their key contributions to global climate variability and change. Providing essential theory and discussing outstanding examples as well as impacts on monsoons, it a useful resource for graduate students and researchers in the atmospheric and ocean sciences.
Book Synopsis El Nino, La Nina, and the Southern Oscillation by : S. George Philander
Download or read book El Nino, La Nina, and the Southern Oscillation written by S. George Philander and published by Academic Press. This book was released on 1989-12-14 with total page 309 pages. Available in PDF, EPUB and Kindle. Book excerpt: El Nino and the Southern Oscillation is by far the most striking phenomenon caused by the interplay of ocean and atmosphere. It can be explained neither in strictly oceanographic nor strictly meteorological terms. This volume provides a brief history of the subject, summarizes the oceanographic and meteorological observations and theories, and discusses the recent advances in computer modeling studies of the phenomenon. Includes a comprehensive and up-to-date research survey Discusses in detail sophisticated computer models Provides a clear exposition of the major problems which prevent more accurate predictions of El Nino
Book Synopsis Satellite Infrared Observations of Oceanic Long Waves in the Eastern Equatorial Pacific 1975 to 1981 by : Richard Legeckis
Download or read book Satellite Infrared Observations of Oceanic Long Waves in the Eastern Equatorial Pacific 1975 to 1981 written by Richard Legeckis and published by . This book was released on 1982 with total page 164 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Impact of Tropical Instability Waves in the Eastern Equatorial Pacific by : Balachandrudu Narapusetty
Download or read book Impact of Tropical Instability Waves in the Eastern Equatorial Pacific written by Balachandrudu Narapusetty and published by . This book was released on 2010 with total page 324 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis The Atmospheric General Circulation by : John M. Wallace
Download or read book The Atmospheric General Circulation written by John M. Wallace and published by Cambridge University Press. This book was released on 2023-04-20 with total page 424 pages. Available in PDF, EPUB and Kindle. Book excerpt: An engaging, comprehensive, richly illustrated textbook about the atmospheric general circulation, written by leading researchers in the field. The book elucidates the pervasive role of atmospheric dynamics in the Earth System, interprets the structure and evolution of atmospheric motions across a range of space and time scales in terms of fundamental theoretical principles, and includes relevant historical background and tutorials on research methodology. The book includes over 300 exercises and is accompanied by extensive online resources, including solutions manuals, an animations library, and an introduction to online visualization and analysis tools. This textbook is suitable as a textbook for advanced undergraduate and graduate level courses in atmospheric sciences and geosciences curricula and as a reference textbook for researchers.
Book Synopsis Satellite Altimetry Over Oceans and Land Surfaces by : Detlef Stammer
Download or read book Satellite Altimetry Over Oceans and Land Surfaces written by Detlef Stammer and published by CRC Press. This book was released on 2017-10-31 with total page 954 pages. Available in PDF, EPUB and Kindle. Book excerpt: Satellite remote sensing, in particular by radar altimetry, is a crucial technique for observations of the ocean surface and of many aspects of land surfaces, and of paramount importance for climate and environmental studies. This book provides a state-of-the-art overview of the satellite altimetry techniques and related missions, and reviews the most-up-to date applications to ocean dynamics and sea level. It also discusses related space-based observations of the ocean surface and of the marine geoid, as well as applications of satellite altimetry to the cryosphere and land surface waters; operational oceanography and its applications to navigation, fishing and defense.
