World Library  


 
  • Cover Image

Improved Sea Level Record Over the Satellite Altimetry Era (1993–2...

By: M. Picot; B. Meyssignac; M. Balmaseda; A. Cazenave; S. Rudenko; O. Andersen; P. Knudsen; P. Cipollini; J. A. Johannessen; G. Timms; G. Larnicol; M. J. Fernandes; J. Legeais; Y. Faugère; M. Ablain; M. Roca; O. Henry; J. Benveniste; D. Stammer; M. G. Scharffenberg

Description: Collecte Localisation Satellite(CLS), Ramoville Saint-Agne, France. Sea level is one of the 50 Essential Climate Variables (ECVs) listed by the Global Climate Observing System (GCOS) in climate change monitoring. In the last two decades, sea level has been routinely measured from space using satellite altimetry techniques. In order to address a number of important scientific questions such as: Is sea level rise accelerating?, Can we close the sea l...

Ablain, M., Cazenave, A., Valladeau, G., and Guinehut, S.: A new assessment of the error budget of global mean sea level rate estimated by satellite altimetry over 1993–2008, Ocean Sci., 5, 193–201, doi:10.5194/os-5-193-2009, 2009.; Ablain, M., Philipps, S., Urvoy, M., Tran, N., and Picot, N.: Detection of long-term instabilities on altimeter backscattering coefficient thanks to wind speed data comparisons from altimete...

Read More
  • Cover Image

Wave-turbulence Scaling in the Ocean Mixed Layer : Volume 9, Issue...

By: B. Ward; K. H. Christensen; G. Sutherland

Description: School of Physics and Ryan Institute, National University of Ireland, Galway, University Road, Galway, Ireland. Microstructure measurements were collected using an autonomous freely rising profiler under a variety of different atmospheric forcing and sea states in the open ocean. Here, profiles of turbulent kinetic energy dissipation rate, Ε, are compared with various proposed scalings. In the oceanic boundary layer, the depth dependence ...

Craig, P. D. and Banner, M. L.: Modelling wave-enhanced turbulence in the ocean surface layer, J. Phys. Oceanogr., 24, 2546–2559, 1994.; Agrawal, Y. C., Terray, E. A., Donelan, M. A., Hwang, P. A., and Williams III, A. J.: Enhanced dissipation of kinetic energy beneath surface waves, Nature, 359, 219–220, 1992.; Anis, A. and Moum, J. M.: Surface wave-turbulence interactions: Scaling $\epsilon(z)$ near the sea surface, J. Phys. Oceanogr., 25, 2025–2045, 1995.; Babanin, A....

Read More
  • Cover Image

Assessment of the Importance of the Current-wave Coupling in the S...

By: M. Espino; R. Bolaños; A. Sánchez-arcilla; G. Jordà

Description: Institut Mediterrani d'Estudis Avançats (IMEDEA), c./Miquel Marqués 21, 07190 Esporles, Illes Balears, Spain. The effects of wave-current interactions on shelf ocean forecasts is investigated in the framework of the MFSTEP (Mediterranean Forecasting System Project Towards Enviromental Predictions) project. A one way sequential coupling approach is adopted to link the wave model (WAM) to the circulation model (SYMPHONIE). The coupling of waves and current...

Ardhuin, F. and Jenkins, A. D.: On the interaction of surface waves and the upper ocean turbulence, J. Phys. Oceanogr., 36, 551–557, 2006.; Auclair, F., Marsaleix, P., and Estournel, C.: The penetration of the northern current over the Gulf of Lion (western Mediterranean Sea) as a downscaling problem, Oceanol. Acta, 24, 529–544, doi:10.1016/S0399-1784(01)01166-5, 2001.; Baumert H., Chapalain, G., Smaoui, H., McManus, J. P., Yagi, H., Regener, M., Sundermann, J., and Szil...

Read More
  • Cover Image

On the Influence of Wind and Waves on the Underwater Light Field :...

By: A. MacKe; M. Hieronymi

Description: Leibniz Institute for Tropospheric Research (IFT), Leipzig, Germany. We present a detailed study of the influence of various wind and wave conditions on the distribution of downwelling irradiance within the upper ocean mixed layer down to 100 m water depth. The work is based on a two-dimensional Monte Carlo radiative transfer model with high spatial resolution. We treat conditions that are favorable for the development of extreme ligh...

Darecki, M., Stramski, D., and Sokolski, M.: Measurements of high-frequency light fluctuations induced by ocean surface waves with an underwater porcupine radiometer system, J. Geophys. Res., 116, C00H09, doi:10.1029/2011JC007338, 2011.; Deckert, R. and Michael, K. J.: Lensing effect on underwater levels of UV radiation, J. Geophys. Res., 111, C05014, doi:10.1029/2005JC00333...

Read More
  • Cover Image

Assessment of the Ecco2 Reanalysis on the Representation of Antarc...

By: R. Kerr; M. M. Mata; M. Azaneu

Description: Laboratório de Estudos dos Oceanos e Clima, Instituto de Oceanografia, Universidade Federal do Rio Grande (FURG), Rio Grande, RS, 96203-900, Brazil. We analyzed the ability of the Estimating the Circulation and Climate of the Ocean – Phase II (ECCO2) reanalysis to represent the hydrographic properties and variability of the Antarctic Bottom Water (AABW) in the Southern Ocean. We used a twenty-year observational database to perform comparisons of hydr...

Lee, T., Awaji, T., Balmaseda, M., Ferry, N., Fujii, Y., Fukumori, I., Giese, B., Heimbach, P., Köhl, A., Masina, S., Remy, E., Rosati, A., Schodlok, M., Stammer, D., and Weaver, A.: Consistency and fidelity of Indonesian-throughflow total volume transport estimated by 14 ocean data assimilation products, Dynam. Atmos. Oceans, 50, 201–223, doi:10.1016/j.dynatmoce.2009.12.004, 2010.; Lumpkin, R. and Speer, K.: ...

Read More
  • Cover Image

Coastal Observing and Forecasting System for the German Bight – Es...

By: J. Staneva; S. Grayek; J. Schulz-stellenfleth; W. Petersen; E. V. Stanev; J. Seemann

Description: Institute of Coastal Research, Helmholtz-Zentrum Geesthacht (HZG), Max-Planck-Strasse 1, 21502 Geesthacht, Germany. A coastal observing system for Northern and Arctic Seas (COSYNA) aims at construction of a long-term observatory for the German part of the North Sea, elements of which will be deployed as prototype modules in Arctic coastal waters. At present a coastal prediction system deployed in the area of the German Bight integrates near r...

Backhaus, J. O. and Maier-Reimer, E.: On seasonal circulation in the North Sea, in: North Sea Dynamics, edited by: Sündermann, J. and Lenz, W., Springer-Verlag, Berlin, Heidelberg, New York, 693 pp., 1983.; Barrick, D. E., Evans, M. W., and Weber, B. L.: Ocean surface currents mapped by radar, Science, 198(4313), 138–144, 1977.; Barth, A., Alvera-Azcárate, A., and Weisberg, R.: Assimilation of high-frequency radar currents in a nested model of the West Florida Shelf, J. ...

Read More
  • Cover Image

Towards a Regional Ocean Forecasting System for the Ibi (Iberia-bi...

By: M. Garcia Sotillo; J. Chanut; C. Maraldi; G. Reffray; B. Levier; S. Cailleau; J.-m. Lellouche

Description: Mercator Océan, Toulouse, France. ECOOP project allowed the improvement of the regional and coastal operational forecasting systems for the different European Seas. In the Iberia-Biscay-Ireland area (IBI) a regional system has been developed and improved for the project in order to provide IBI partners the best initial and boundary conditions to their embedded coastal systems. End users could also get access to the regional hindcasts and forecasts throu...

Adcroft, A. and Campin, J. M.: Rescaled height coordinates for accurate representation of free-surface flows in ocean circulation models, Ocean Modell., 7,(3–4), 269–284, 2004.; Alvarez Fanjul, E., Alfonso, M., Ruiz, M. I., López, J. D., and Rodríguez I.: Real Time monitoring of Spanish Coastal Waters, Proceedings of the Third international conference on Eurogoos: Building the European capability in Operational Oceanography, Elsevier, 2002.; Barnier, B., Siefriedt, L., a...

Read More
  • Cover Image

The Effects of Biogeochemical Processes on Oceanic Conductivity/Sa...

By: F. J. Millero; D. G. Wright; R. Pawlowicz

Description: Dept. of Earth and Ocean Sciences, University of British Columbia, Vancouver, B.C., V6T 1Z4, Canada. As seawater circulates through the global ocean, its relative composition undergoes small variations. This results in changes to the conductivity/salinity/density relationship, which is currently well-defined only for Standard Seawater obtained from a particular area in the North Atlantic. These changes are investigated here by analysis of laboratory expe...

Brewer, P. G. and Bradshaw, A.: The effect of the non-ideal composition of seawater on salinity and density, J. Mar. Res., 33, 157–175, 1975.; Bates, N. R. and Mathis, J. T.: The Arctic Ocean marine carbon cycle: evaluation of air-sea CO2 exchanges, ocean acidification impacts and potential feedbacks, Biogeosciences, 6, 2433–2459, 2009.; Chen, C. T. and Millero, F. J.: Precise thermodynamical properties for natural waters covering only the limnological range, ...

Read More
  • Cover Image

Towards Measuring the Meridional Overturning Circulation from Spac...

By: A. G. P. Shaw; R. E. Houseago-stokes; D. Cromwell; R. Tokmakian; P. Challenor

Description: Ocean Observations and Climate, National Oceanography Centre, Southampton (NOCS), UK. We present a step towards measuring the meridional overturning circulation (MOC), i.e. the full-depth water mass transport, in the North Atlantic using satellite data. Using the Parallel Ocean Climate Model, we simulate satellite observations of ocean bottom pressure and sea surface height (SSH) over the 20-year period from 1979–1998, and use a linear model to estimate ...

Bryden, H. L., Longworth, H. R., and Cunningham, S. A.: Slowing of the Atlantic meridional overturning circulation at 25° N, Nature, 438, 655–657, 2005.; Chassignet, E. P., Smith, L. T., Halliwell, G. R., and Bleck, R.: North Atlantic simulation with the HYbrid Coordinate Ocean Model (HYCOM): Impact of the vertical coordinate choice, reference density, and thermobaricity, J. Phys. Oceanogr., 33, 2504–2526, 2003.; Gordon, C., Cooper, C., Senior, C. A. , Banks, H.T., Grego...

Read More
  • Cover Image

Predictions for Oil Slicks Detected from Satellite Images Using My...

By: X. Panayidou; D. Solovyov; M. De Dominicis; G. Zodiatis; R. Lardner

Description: Oceanography Centre, University of Cyprus, Nicosia, Cyprus. The pan-European capacity for the Ocean Monitoring and Forecasting (MyOcean) Marine Core Service, implementing the Global Monitoring for Environment and Security (GMES) objectives, targets the provision of ocean state observations from various platforms and analysis and forecasting products to assist, among other downscaling activities, the needs of the operational response to marine safety, pa...

Ahlstrom, S. A.: Mathematical model for predicting the transport of oil slicks in marine waters, Res. Rept., Batelle Laboratories, Richland, Wash, 1975.; Brostrom, G., Carrasco, A., Daniel, P., Hackett, B., and Paradis, D.: Comparison of two oil drift models and different ocean forcing: with application to Mediterranean drifter trajectories and North Sea oil spill, Proceedings of 5th International Conference on EuroGOOS, Coastal to Global Operational Oceanography: Achiev...

Read More
  • Cover Image

Atmospheric Forcing of Salinity in the Overflow of Denmark Strait ...

By: T. Albrecht; J. Holfort

Description: Institut für Meereskunde der Universität Hamburg, Hamburg, Germany. The temporal evolution of the characteristics of Denmark Strait Overflow Water (DSOW) is reconstructed using hydrographic data and compared with possible atmospheric forcing mechanisms. It is concluded that the main factor influencing the DSOW characteristics at a time scale of one to several years is the difference in mean sea level pressure across Denmark Strait or, in other words, th...

Conkright, M E., Levitus, S., Boyer, T P., O'Brien, T., Stephens, C., Johnson, D., Stathoplos, L., Baranova, O., Antonov, J., Gelfeld, R., Burney, J., Rochester, J., and Forgy, C.: WORLD OCEAN DATABASE 1998, 1998.; Dickson, R R., Lazier, J., Meincke, J., Rhines, P., and Swift, J.: Long-term coordinated changes in the convective activity of the North Atlantic, Prog. Oceanogr., 38, 241–295, 1996.; Dickson, R R., Medler, K., and Read, J.: Current meter data report for Workp...

Read More
  • Cover Image

Variability of Heat and Salinity Content in the North Atlantic in ...

By: N. C. Wells; D. L. Aleynik; A. G. P. Shaw; V. O. Ivchenko

Description: National Oceanography Centre, Southampton, UK. The analysis of the heat and salinity contents have been made for the Northern Atlantic for the decade between January 1999 and December 2008. This analysis is based on the Argo profiling data for the upper 2000 m. Basin-averaged values of anomaly of heat (AHC) and anomaly of salinity content (ASC) are robust and stable. The AHC and ASC demonstrate positive trends in the last decade in the upper 2000 m of ...

Gandin, L. S.: Objective analysis of meteorological fields, Israel Program for Scientific Translations, 242 pp., 1965.; Bretherton, F. P., Davis, R. E., and Fandry, C. B.: A technique for objective analysis and design of oceanographic experiments applied to MODE-73, Deep-Sea Res., 23, 559–582, 1976.; Coatanoan, C.: Loic Petit De La Villeon. In-situ data quality control, Coriolis Data Centre, COR-DO/DTI-RAP/04-047, 17 pp., online available at:

Read More
  • Cover Image

Dynamics of Turbulent Western Boundary Currents at Low Latitude in...

By: A. Wirth; C. Q. C. Akuetevi

Description: Université Grenoble Alpes, LEGI, 38000 Grenoble, CNRS, France. The dynamics of low latitude turbulent western boundary currents crossing the equator is considered using numerical results from integrations of a reduced gravity shallow-water model. For viscosity values of 1000 m2 s−1 and more, the boundary layer dynamics compares well to the analytical Munk-layer solution. When the viscosity is reduced, the boundary layer become...

Akuetevi, C. Q. C., Barnier, B., Molines, J.-M., and Lecointre, A.: Interactions between the Somali Current Eddies during the Summer Monsoon: insights from a numerical study, Ocean Sci., in preparation, 2014.; Aubry, N., Holmes, P., Lumley, J. L., and Stone, E.: The dynamics of coherent structures in the wall region of a turbulent boundary layer, J. Fluid Mech., 192, 115–173, 1988.; Barnier, B., Reynaud, T., Beckmann, A., Böning, C., Molines, J.-M., Barnard, S., and Jia,...

Read More
  • Cover Image

Assimilation of Sla Along Track Observations in the Mediterranean ...

By: C. Dufau; S. Dobricic; M.-h. Rio; N. Pinardi; P. Oddo; I. Pujol

Description: Centro Euro-Mediterraneo per i cambiamenti Climatici (CMCC), Bologna, Italy. A large number of SLA observations at a high along track horizontal resolution are an important ingredient of the data assimilation in the Mediterranean Forecasting System (MFS). Recently new higher frequency SLA products have become available, and the atmospheric pressure forcing has been implemented in the numerical model used in the MFS data assimilation system. In a set of ...

Barnier, B., Madec, G., Penduff, T., Molines, J.-M., Treguier, A.-M., le Sommer, J., Beckmann, A., Biastoch, A., Böning, C., Dengg, J., Derval, C., Durand, E., Gulev, S., Remy, E., Talandier, C., Theetten, S., Maltrud, M., McClean, J., and de Cuevas, B.: Impact of partial steps and momentum advection schemes in a global circulation model at eddy permitting resolution, Ocean Dynam., 56, 543–567, doi:10.1007/s10236-006-00...

Read More
  • Cover Image

Possible Signals of Poleward Surface Ocean Heat Transport, of Arct...

By: J. B. Matthews; J. B. R. Matthews

Description: Tennis Road, Douglas, Isle of Man, British Isles. This is the second of two papers on observational timeseries of top of ocean heat capture. The first reports hourly and daily meridional central tropical Pacific top 3 m timeseries showing high Southern Hemisphere evaporation (2.67 m yr−1) and Northern Hemisphere trapped heat (12 MJ m−2 day−1). We suggested that wind drift/geostrophic stratified gyre circulation tr...

Aagaard, K. and Carmack, E.: The role of sea-ice and other freshwater in the Arctic Circulation, J. Geophys. Res., 94, 14485–14498, doi:10.1029/JC094iC10p14485, 1989.; Aberson, S. D.: Regimes and cycles in tropical cyclone activity in the north Atlantic, B. Am. Meteorol. Soc., 90, 39–43, doi:10.1175/2008BAMS2549.1, 2009.; Allen, E. J.: The Stockholm Fisheries Confer...

Read More
  • Cover Image

Transformation of an Agulhas Eddy Near the Continental Slope : Vol...

By: Y. Zhang; G. R. Flierl; S. Baker-yeboah; G. G. Sutyrin

Description: Department of Earth, Atmospheric, and Planetary Sciences, Massachusetts Institute of Technology, Cambridge, MA 02139, USA. The transformation of Agulhas eddies near the continental slope of South Africa and their subsequent self-propagation are analyzed in both observational data and numerical simulations. Self-propagation results from a net dipole moment of a generalized heton structure consisting of a surface-intensified anticyclonic eddy and deep cycl...

An, B. W. and McDonald, N. R.: Coastal currents and eddies and their interaction with topography, Dynam. Atmos. Oceans, 40, 237–253, 2005.; Arhan, M., Mercier, H., and Lutjeharms, J. R. E.: The disparate evolution of three Agulhas rings in the South Atlantic Ocean, J. Geophys. Res., 104, 20 987–21 005, 1999.; Baker-Yeboah, S.: Sea Surface Height Variability and the Structure of Eddies in the South Atlantic Cape Basin, Ph.D. dissertation, University of Rhode Island, Narra...

Read More
  • Cover Image

Impact of the Indonesian Throughflow on Agulhas Leakage : Volume 9...

By: H. A. Dijkstra; W. P. M. De Ruijter; D. Le Bars

Description: IMAU, Utrecht University, P.O. Box 80.005, 3508 TA Utrecht, the Netherlands. Using ocean models of different complexity we show that opening the Indonesian Passage between the Pacific and the Indian oceans increases the input of Indian Ocean water into the South Atlantic via the Agulhas leakage. In a strongly eddying global ocean model this response results from an increased Agulhas Current transport and a constant proportion of Agulhas retroflection so...

Backeberg, B. C., Bertino, L., and Johannessen, J. A.: Evaluating two numerical advection schemes in HYCOM for eddy-resolving modelling of the Agulhas Current, Ocean Sci., 5, 173–190, doi:10.5194/os-5-173-2009, 2009.; Beal, L. M., De Ruijter, W. P. M., Biastoch, A., and Zahn, R.: On the role of the Agulhas system in ocean circulation and climate, Nature, 472, 429–436, 2011.; Bryden, H. L., Beal, L. M., and Duncan, L. M....

Read More
  • Cover Image

Controlling Atmospheric Forcing Parameters of Global Ocean Mode...

By: B. Barnier; J. Verron; N. Ferry; J.-m. Brankart; C. Skandrani; P. Brasseur

Description: LEGI/CNRS, Grenoble, France. In the context of stand alone ocean models, the atmospheric forcing is generally computed using atmospheric parameters that are derived from atmospheric reanalysis data and/or satellite products. With such a forcing, the sea surface temperature that is simulated by the ocean model is usually significantly less accurate than the synoptic maps that can be obtained from the satellite observations. This not only penalizes the...

Balmaseda, M., Alves, J., Arribas, A., Awaji, T. D. B., Ferry, N., Fujii, Y., Lee, T., Rienecker, M. T. R., and Stammer, D.: Ocean Initialisation for Seasonal Forecasts, Proceeding of final GODAE Symposiumi, Nice, France, 373–394, 2008.; Béal, D., Brasseur, P., Brankart, J.-M., Ourmières, Y., and Verron, J.: Controllability of mixing errors in a coupled physical biogeochmeical model of the {N}orth {A}tlantic: a nonlinear study using ensemble anamorphosis, Ocean Science, ...

Read More
  • Cover Image

An Automated Gas Exchange Tank for Determining Gas Transfer Veloci...

By: R. C. Upstill-goddard; M. E. Salter; K. Schneider-zapp

Description: Ocean Research Group, School of Marine Science and Technology, Newcastle University, Newcastle upon Tyne, UK. In order to advance understanding of the role of seawater surfactants in the air–sea exchange of climatically active trace gases via suppression of the gas transfer velocity (kw), we constructed a fully automated, closed air–water gas exchange tank and coupled analytical system. The system allows water-side turbulence in t...

\'Cosović, B. and Vojvodić, V.: The application of ac polarography to the determination of surface-active substances in seawater, Limnol. Oceanogr., 27, 361–369, 1982.; Asher, W. E.: The effects of experimental uncertainty in parameterizing air-sea gas exchange using tracer experiment data, Atmos. Chem. Phys., 9, 131–139, doi:10.5194/acp-9-131-2009, 2009.; Bock, E. J., Hara, T., Frew, N. M., and McGillis, W. R.: Relati...

Read More
  • Cover Image

Observations of Phytoplankton Spring Bloom Onset Triggered by a De...

By: J. Tintoré; S. Sparnocchia; S. Cusí; L. Fazioli; A. Olita; A. Ribotti; R. Sorgente

Description: CNR-IAMC, Institute for Coastal Marine Environment, Oristano Section, Italy. Phytoplankton bloom in NW Mediterranan sea is a seasonal event that mainly occurrs in a limited area (Gulf of Lyon and Provençal basin) where this phenomenon is promoted by a cyclonic circulation, strong wind-driven mixing and subsequent spring restratification. At the southern boundary of this area a density front (North Balearic Front) separating denser waters from the lighte...

Behrenfeld, M. J.: Abandoning Sverdrup's Critical Depth Hypothesis on phytoplankton blooms, Ecology, 91, 977–989, 2010.; Bernardello, R., Cardoso, J. G., Bahamon, N., Donis, D., Marinov, I., and Cruzado, A.: Factors controlling interannual variability of vertical organic matter export and phytoplankton bloom dynamics – a numerical case-study for the NW Mediterranean Sea, Biogeosciences, 9, 4233–4245, doi:10.5194/bg-9-4233-...

Read More
 
1
|
2
|
3
Records: 1 - 20 of 45 - Pages: 



Copyright © World Library Foundation. All rights reserved. eBooks from World Library are sponsored by the World Library Foundation,
a 501c(4) Member's Support Non-Profit Organization, and is NOT affiliated with any governmental agency or department.