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IAPSO Symposia
| SESSION |
TITLE |
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P01 |
Mesoscale Ocean Eddies |
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This symposium is co-sponsored by IABO |
| Convenors: |
William Crawford, Michael Stacey, Sinjae Yoo |
Invited Speakers: |
Anya Waite, University of Western Australia
Bo Qiu, University of Hawaii, USA |
| Description: |
Mesoscale eddies impact most oceanic processes, from heat, salt, momentum and biochemical fluxes to biological productivity. The present set of altimetry satellites reveal, in near-real time, the formation, propagation and decay of eddies and allow scientists to locate eddies for multi-disciplinary ship-based studies. Recent developments in eddy-resolving numerical ocean models and increasing computer power now permit detailed simulations of physical, chemical and biological processes. Atmospheric-ocean models reveal the role of winds in eddy formation and the impact of eddies on global climate. This session encourages contributions on aspects of mesoscale ocean eddies, including biological processes, to provide an opportunity for scientists to share and discover new scientific information. |
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P02 |
Effects of Climate Variability on Nearshore Coastal Environments: Physical, Geomorphologic and Biological Interactions |
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This symposium has now been expanded to include P08 |
| Convenors: |
Maria Cintia Piccolo, Bo Gustafsson, Arnoldo Valle Levinson |
| Invited Speaker: |
Robin Davidson-Arnott, University of Guelph, Canada |
| Description: |
Coastal habitats are highly vulnerable to variability in the earth's climatic conditions. They are affected by physical factors such as sea level rise, changes in frequency and strength of storms, variations in wave and current patterns, fluctuations in salinity-temperature, and storm surges. These factors induce increased coastal erosion, habitat modifications, loss of coastal wetlands, exposure to tsunamis, etc. The vulnerability is further increased by the pressure of human migration to coastal areas. Coastal environments are affected by a very complex interaction among geomorphologic, physical and biological processes. These effects should be appreciable at the full spectrum of temporal and spatial scales of variability because of the inherently large gradients in coastal ocean variables. This symposium is organized in order to understand the role of individual processes and, most important, the interplay among them. The symposium seeks to promote discussion among active scientists in all specialities related to coastal environments. Preference will be given to studies dealing with interaction processes. |
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P03 |
Argo and Operational Oceanography |
| Convenors: |
Howard Freeland, John Gould, Temel Oguz, Toshio Suga |
Invited Speaker: |
| Toshio Yamagata, University of Tokyo and JAMSTEC, Japan |
Harold Ritchie, Environment Canada, Dartmouth NS, Canada |
| Description: |
This full-day session will focus on the opportunities being offered by the new real-time data systems that permit research on the evolution of the oceans on a large scale, as well as the observation and assessment of ocean state for the generation of products which carry distinct social benefits. We invite papers that address the following topics:
- academic exploration of the ocean environment using Argo
- the use of Argo to supply useful products, and
- all other fields of operational oceanography
Operational Oceanography is not yet well defined, so we are interpreting it as the use of real-time data systems, such as Argo or satellite altimetry, for monitoring the health or condition of a large ocean area and for ecosystem assessment. Such data systems can also be used to enhance meteorological forecasting and the safety of navigation. |
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P04 |
Overflows and Abyssal Currents |
| Convenors: |
Gordon Swaters, James B. Girton |
Invited Speakers: |
| Ilker Fer, University of Bergen, Norway |
| Sonya Legg, Princeton University, USA |
| Jack Whitehead, Woods Hole Oceanographic Institution, USA |
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| Description: |
Density-driven flows over sills and grounded baroclinic currents are important components of the abyssal portion of the meridional overturning circulation. The variability associated with these flows is responsible for a significant fraction of the mixing that occurs in the deep ocean. This symposium will provide a forum for the presentation and discussion of results related to laboratory, observational, numerical and theoretical investigations of overflows and abyssal currents, from sub-mesoscale to planetary-scale dynamics. |
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P05 |
Physics and Chemistry of the Oceans: General Topics |
| Convenors: |
Eugene Morozov, Silvia Blanc, Leo Maas, Gregorio Parrilla |
Invited Speakers: |
| Michael J. Buckingham, Scripps Institute of Oceanography, USA |
| Trevor McDougall, CSIRO Marine & Atmospheric Research, Australia |
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| Description: |
The symposium is planned to discuss the new results of research in physical and chemical oceanography concerning circulation, water masses and their interaction, currents, wind waves, internal waves, tides, and other phenomena in different regions of the ocean. Variability of oceanic processes on different space and time scales will be considered. The topics of the symposium include chemical distributions and interactions as well as sea ice, variations in sea level and storm surges, recent results in satellite observations of the ocean, numerical and laboratory modelling. The symposium is intended to touch upon all problems of physical and chemical oceanography not included in the themes of other symposia. |
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P06 |
Ocean Mixing Processes and Consequences |
| Convenors: |
Barry Ruddick, Robin Muench, Anna K. Wåhlin |
Invited Speakers: |
| Claudia Cenedese Woods Hole Oceanographic Institution, USA |
James Ledwell, Woods Hole Oceanographic Institution, USA
| Jennifer MacKinnon, Scripps Institution of Oceanography, USA |
| Lars Umlauf, Leibniz-Institute for Baltic Sea Research (IOW), Germany |
| Jody Klymak, University of Victoria, Canada |
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| Description: |
Diapycnal and horizontal ocean mixing ranges from exchange processes near the surface and bottom to slower interior mixing processes, affecting ocean circulation and large-scale heat transport so important to climate. Other consequences include chemical exchanges such as nutrient transport to the photic zone (affecting biological productivity), exchanges in the coastal ocean and across shelves, and mixing of deep ocean currents and overflows. The driving mechanisms are numerous; tidal and other currents, internal waves, turbulence generated by bottom friction, surface wind and waves, and double-diffusive effects, to name but a few. Recent discoveries about horizontal mixing at mesoscales and smaller illustrate important links between horizontal and vertical mixing mechanisms. A key objective of mixing studies is a mechanistic understanding combined with observations, leading to specific parameterizations that can be confidently implemented in circulation models. This session will focus on recent process studies and data sets, and new parameterization schemes for ocean mixing as well as studies of the effects of specific parameterizations on circulation models.
This symposium is co-sponsored by the US National Committee for Geodesy and Geophysics and the Scientific Committee on Oceanic Research. |
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P07 |
The Southern Ocean: Its Physics, Chemistry, Biology and Links to the Global Climate System |
| Convenors: |
Zhaomin Wang, Isabelle Ansorge |
Invited Speakers: |
| Sarah Gille, Scripps Institute of Oceanography, USA |
| Karen Heywood, University of East Anglia, UK |
| Michael Meredith, British Antarctic Survey, UK |
| Dorothee Bakker, University of East Anglia, UK |
| Mike Lucas, University of Cape Town, South Africa |
| Eberhard Fahrbach, Alfred Wegener Institute, Germany |
Steve Rintoul and Serguei Sokolov, Centre for Australian Weather and Climate Research, Hobart, Australia |
| Description: |
The Southern Ocean is important in the global climate system due to its large heat uptake and carbon storage. Its circulation is also an important component in the global thermohaline circulation. In the Southern Ocean, significant amounts of bottom water form in the sub-polar region; the Antarctic Circumpolar Current is the largest current in the world ocean; oceanic eddies are active; there are distinct layers of different water mass properties. It is conceivable that these processes have a marked affect on the distribution of biota. The Southern Ocean has strong interactions with the other components of the climate system. As these exchanges play an important role in regulating mean global climate, a better understanding of the physical, biological and chemical processes is highly important. This symposium aims to discuss new results of research in physical, chemical, and biological processes in the Southern Ocean and their links to the global climate system on broad temporal and spatial scales. |
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P08 |
Coastal Currents and Large Marine Ecosystems |
| Convenors: |
Tarsicio Antezana, Kimberly Hyde |
Invited Speaker: |
| Edmo J.D. Campos Instituto Oceanografico da Universidade de Sao Paulo, Brasil |
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This symposium has now been combined with P02 |
| Description: |
This symposium will discuss how western and eastern boundary and other coastal currents (and their variability) affect and drive large marine ecosystems, their physics, chemistry, biology and fisheries. It will address common processes between eastern and western boundary currents and the fronts involved, as they affect ecosystems, as well as the major differences between systems. The symposium will also address up and down scaling between global and large marine ecosystem scales. What are the factors that influence primary production, and how this production is channeled through the food web to fish production? What physical processes influence the Bakun triad in different systems?
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P09 |
Deep Ocean Exchange with the Shelf |
| Convenors: |
John Johnson, Piers Chapman |
Invited Speakers: |
| Ken Brink, Woods Hole Oceanographic Institution, USA |
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| Katja Fennel, Dalhousie University, Canada |
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| Sheekela Baker-Yeboah, Massachusetts Institute of Technology, USA |
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| Description: |
The exchanges and fluxes that occur near the shelf break are important parts of the global ocean circulation. Better understanding of the exchanges between the shelf and the deep ocean will improve the interpretation of observations and is needed for more realistic modelling of climate, the carbon cycle, sedimentation and marine ecosystems.Oral and poster papers are invited on the following topics:
- processes due to shelf waves, internal tides, shelf break upwelling, storms and extreme events that produce effects over time scales of weeks to one or two years;
- transport over the shelf and shelf break of riverine and estuarine input of sediment and fresh water;
- dissipation of tidal motion along the continental margins on time scales of hours to days;
- physical controls of chemical and biological fluxes between the shelf and the open ocean that can affect the ecology of such regions; and
- coupled physical-chemical-biological models, generally at local to regional scales, that have a more realistic description of the exchanges at the shelf edge.
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P10 |
The Variable Atlantic Meridional Overturning Circulation – Characteristics, Causes and Consequences for Climate |
| Convenors: |
Torsten Kanzow, Lisa Beal |
Invited Speakers: |
| Bogi Hansen, Faroese Fisheries Laboratory, Faroe Islands |
| Arne Biastoch, IFM-GEOMAR, Germany |
| Susan Lozier, Duke University, USA |
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| Description: |
In carrying large amounts of heat northward, the Atlantic Meridional Overturning Circulation (AMOC) is an important element of the time-variable coupled climate system. Paleo-oceanographic records imply that the strength and spatial structure of AMOC have undergone substantial and rapid changes during the Earth's past; changes which are associated with fluctuations in climate. Observations and model simulations suggest that the AMOC displays natural fluctuations over a broad range of intra-seasonal to centennial time scales, linked to both internal and coupled modes of variability. At present, possible sustained changes of the AMOC in the currently evolving climate are in the centre of an ongoing scientific debate. Here, we invite contributions of researchers involved in observing, simulating, and predicting AMOC variability and its characteristics over all time scales, as well as those investigating possible consequences for climate. This includes the role of variability in the subpolar Seas and horizontal gyres of the Atlantic, in the Southern Ocean and Arctic Seas, as well as in the exchange with the Indo-Pacific Ocean, and variability related to feedbacks of the coupled climate system. |
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