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Numerical Simulation Of Deep Convection And The Response Of Drifters In The Labrador Sea
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Book Synopsis Numerical Simulation of Drifter Response to Labrador Sea Convection by : R. Harcourt
Download or read book Numerical Simulation of Drifter Response to Labrador Sea Convection written by R. Harcourt and published by . This book was released on 1997-02-01 with total page 80 pages. Available in PDF, EPUB and Kindle. Book excerpt: This report describes numerical simulation of two types of idealized drifters: pure Lagrangian drifters and the isobaric drifters. A large eddy (LES) model was used to predict the fully turbulent non-hydrostatic evolution of the oceanic flow fields that are typical of the Labrador Sea. The LES simulation indicates that either free or forced convection may dominate, depending upon the magnitudes of the wind stress and the net surface heat fluxed out of the ocean surface. Free convection predominates in the winter regimes of the periphery of the polar seas, especially in the very deeply convecting regions of open water adjacent to marginal ice zones. Forced convection is more dominant in the stable ice covered regions of the polar seas experiencing strong wind stirring and kinetic energy exchange with the ice. Forced convection may be an important precursor to free convection, and the organized cells of forced convection may help dilate the ice field to enhance heat and buoyancy exchange between the OPBL and the atmosphere.
Book Synopsis Numerical Simulation of Deep Convection and the Response of Drifters in the Labrador Sea by : Ramsey R. Harcourt
Download or read book Numerical Simulation of Deep Convection and the Response of Drifters in the Labrador Sea written by Ramsey R. Harcourt and published by . This book was released on 1999 with total page 744 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis High Performance Computing Contributions to DoD Mission Success by :
Download or read book High Performance Computing Contributions to DoD Mission Success written by and published by . This book was released on 1998 with total page 164 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Naval Research Reviews written by and published by . This book was released on 1998 with total page 356 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis The General Circulation and Open-ocean Deep Convection in the Labrador Sea by : Kara L. Lavender
Download or read book The General Circulation and Open-ocean Deep Convection in the Labrador Sea written by Kara L. Lavender and published by . This book was released on 2001 with total page 302 pages. Available in PDF, EPUB and Kindle. Book excerpt:
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 2002 with total page 1136 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Dissertation Abstracts International by :
Download or read book Dissertation Abstracts International written by and published by . This book was released on 1999 with total page 700 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis A Summary of Research 1995 by : United States. Naval Postgraduate School, Monterey, CA.
Download or read book A Summary of Research 1995 written by United States. Naval Postgraduate School, Monterey, CA. and published by . This book was released on 1995 with total page 588 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Mesoscale Variability in the Labrador Sea by :
Download or read book Mesoscale Variability in the Labrador Sea written by and published by . This book was released on 1999 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: The objective of this study was to understand the interaction between deep convection in the Labrador Sea and mesoscale eddies, in order to quantify the influence of convective events on the large-scale circulation. Three- dimensional non-hydrostatic numerical simulations were used to examine the response of individual eddies and groups of mesoscale eddies to surface cooling and convection. The mesoscale eddies are destabilized by the convective mixing, and break up into smaller eddies. A vigorous horizontal velocity field develops, which serves to efficiently stir the water, except for isolated eddy cores. The interleaving associated with the eddies gives rise to significant density-compensated variability in the tracer fields. The statistics of fields observed by isobaric floats are significantly affected by the eddy dynamics. Many of these features are also found in recent observations from the Labrador Sea.
Download or read book 1998 Ocean Sciences Meeting written by and published by . This book was released on 1998 with total page 240 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Large Eddy Simulation of Interactions Between Free Convection, Wind Driven Currents, and Baroclinicity in Labrador Sea Deep Mixed Layers by : Denise M. Kruse
Download or read book Large Eddy Simulation of Interactions Between Free Convection, Wind Driven Currents, and Baroclinicity in Labrador Sea Deep Mixed Layers written by Denise M. Kruse and published by . This book was released on 2000-06-01 with total page 102 pages. Available in PDF, EPUB and Kindle. Book excerpt: Understanding the dynamics of deep convection leading to the formation of deep water is important not only for studying the small-scale generation regions, but also for studying the large-scale thermohaline circulation Large Eddy Simulation (LES) is used to model deep convection with an imposed mean horizontal density gradient of two different strengths and wind forcing from various directions, with strong surface cooling representative of the Labrador Sea. Results from these different cases are compared and analyzed to understand the effects of horizontal density gradients and wind direction on turbulence statistics for deep convection. Both the strength of horizontal density gradients and wind direction relative to the gradient affect mixed layer scalar variances, turbulent vertical fluxes, Vertical Turbulent Kinetic Energy (VTKE), and stability during deep convection. Wind direction dominates over gradient strength in determining vertical flux magnitude with larger variation in strong gradient cases. Levels of VTKE are more dependent on gradient strength, with weaker gradients producing higher values of VTKF than stronger gradients regardless of wind direction. Wind direction does alter VTKE levels in the same manner as it alters vertical flux levels. The presence of a horizontal gradient is a stabilizing factor in areas of strong surface cooling.
Book Synopsis Air-Sea Interactions and Deep Convection in the Labrador Sea by : Laura S. Bramson
Download or read book Air-Sea Interactions and Deep Convection in the Labrador Sea written by Laura S. Bramson and published by . This book was released on 1997-12-01 with total page 86 pages. Available in PDF, EPUB and Kindle. Book excerpt: Deep convection in the oceans, particularly at high latitudes, plays an important role in the climate systems of the world's oceans and atmosphere. This study was conducted to examine atmospheric forcing effects on deep convection in the Labrador Sea. The Naval Postgraduate School one dimensional ocean mixed layer model was applied to the Labrador Sea from February 12 to March 10, 1997. The model was initialized and forced with oceanographic and atmospheric data collected onboard the R/V Knorr during the first field program of the Labrador Sea Deep Convection Experiment. An ocean mixed layer depth close to 1300m was predicted and verified using the observed data. A sensitivity study was conducted using deviations from observations as input to determine how variations in atmospheric forcing could lead to the observed and even deepened ocean mixed layer. Observed Conductivity, temperature and depth (CTD) data were used to verify the model's spatial and temporal predictions of mixed layer temperature, salinity and depth. Model predicted mixed layer depths were usually slightly deeper than those observed. The final model output predicted temperature rather accurately, but model predicted salinity values were consistently low. A variety of sensitivity studies gave new insight to the individual influences of surface fluxes, momentum stresses, precipitation, salinity and individual storm variations to the mixed layer temperature, salinity and depth of the Labrador Sea.
Book Synopsis Air-Sea Interactions and Deep Convection in the Labrador Sea by : Naval Postgraduate Naval Postgraduate School
Download or read book Air-Sea Interactions and Deep Convection in the Labrador Sea written by Naval Postgraduate Naval Postgraduate School and published by Createspace Independent Publishing Platform. This book was released on 2016-01-20 with total page 76 pages. Available in PDF, EPUB and Kindle. Book excerpt: Deep convection in the oceans, particularly at high latitudes, plays an important role in the climate systems of the world's oceans and atmosphere. This study was conducted to examine atmospheric forcing effects on deep convection in the Labrador Sea. The Naval Postgraduate School one dimensional ocean mixed layer model was applied to the Labrador Sea from February 12 to March 10, 1997. The model was initialized and forced with oceanographic and atmospheric data collected onboard the RN Knorr during the first field program of the Labrador Sea Deep Convection Experiment. An ocean mixed layer depth close to 1300 m was predicted and verified using the observed data. A sensitivity study was conducted using deviations from observations as input to determine how variations in atmospheric forcing could lead to the observed and even deepened ocean mixed layer. Observed Conductivity, temperature and depth (CTD) data were used to verify the model's spatial and temporal predictions of mixed layer temperature, salinity and depth. Model predicted mixed layer depths were usually slightly deeper than those observed. The final model output predicted temperature rather accurately, but model predicted salinity values were consistently low. A variety of sensitivity studies gave new insight to the individual influences of surface fluxes, momentum stresses, precipitation, salinity and individual storm variations to the mixed layer temperature, salinity and depth of the Labrador Sea.
Author :Naval Postgraduate Naval Postgraduate School Publisher :CreateSpace ISBN 13 :9781514341704 Total Pages :76 pages Book Rating :4.3/5 (417 download)
Book Synopsis Air-Sea Interactions and Deep Convection in the Labrador Sea by : Naval Postgraduate Naval Postgraduate School
Download or read book Air-Sea Interactions and Deep Convection in the Labrador Sea written by Naval Postgraduate Naval Postgraduate School and published by CreateSpace. This book was released on 2015-06-14 with total page 76 pages. Available in PDF, EPUB and Kindle. Book excerpt: Deep convection in the oceans, particularly at high latitudes, plays an important role in the climate systems of the world's oceans and atmosphere. This study was conducted to examine atmospheric forcing effects on deep convection in the Labrador Sea. The Naval Postgraduate School one dimensional ocean mixed layer model was applied to the Labrador Sea from February 12 to March 10, 1997. The model was initialized and forced with oceanographic and atmospheric data collected onboard the RN Knorr during the first field program of the Labrador Sea Deep Convection Experiment. An ocean mixed layer depth close to 1300 m was predicted and verified using the observed data. A sensitivity study was conducted using deviations from observations as input to determine how variations in atmospheric forcing could lead to the observed and even deepened ocean mixed layer. Observed Conductivity, temperature and depth (CTD) data were used to verify the model's spatial and temporal predictions of mixed layer temperature, salinity and depth. Model predicted mixed layer depths were usually slightly deeper than those observed. The final model output predicted temperature rather accurately, but model predicted salinity values were consistently low. A variety of sensitivity studies gave new insight to the individual influences of surface fluxes, momentum stresses, precipitation, salinity and individual storm variations to the mixed layer temperature, salinity and depth of the Labrador Sea.
Book Synopsis Towards Predicting Deep Convection in the Labrador Sea by :
Download or read book Towards Predicting Deep Convection in the Labrador Sea written by and published by . This book was released on 1997 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: We have developed and implemented a method to use real time oceanographic data in conjunction with climatological air-sea flux data to predict the location and strength of deep convection in the Labrador Sea a few weeks in advance. In preparation for this task we have gathered and analyzed a number of historical and recent data sets. In particular the results of a recent mooring deployment during the winter of 1994-1995 gave new insight into the convective process in the Labrador Sea.
Book Synopsis Natural Climate Variability on Decade-to-Century Time Scales by : National Research Council
Download or read book Natural Climate Variability on Decade-to-Century Time Scales written by National Research Council and published by National Academies Press. This book was released on 1996-08-30 with total page 645 pages. Available in PDF, EPUB and Kindle. Book excerpt: This volume reflects the current state of scientific knowledge about natural climate variability on decade-to-century time scales. It covers a wide range of relevant subjects, including the characteristics of the atmosphere and ocean environments as well as the methods used to describe and analyze them, such as proxy data and numerical models. They clearly demonstrate the range, persistence, and magnitude of climate variability as represented by many different indicators. Not only do natural climate variations have important socioeconomic effects, but they must be better understood before possible anthropogenic effects (from greenhouse gas emissions, for instance) can be evaluated. A topical essay introduces each of the disciplines represented, providing the nonscientist with a perspective on the field and linking the papers to the larger issues in climate research. In its conclusions section, the book evaluates progress in the different areas and makes recommendations for the direction and conduct of future climate research. This book, while consisting of technical papers, is also accessible to the interested layperson.
Download or read book Oceanic Abstracts written by and published by . This book was released on 1997-10 with total page 1064 pages. Available in PDF, EPUB and Kindle. Book excerpt:
