10th International Conference on Southern Hemisphere Meteorology and Oceanography

Changing southern climates

Noumea, New-Caledonia, 23 - 27 april 2012

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Regular sessions

1. Monsoon Systems in the Southern Hemisphere

  • Alice Grimm (Department of Physics, Federal University of Paraná, Brazil)
  • Matthew Wheeler (Bureau of Meteorology, Melbourne, Australia)

For much of the Southern Hemisphere tropical/subtropical land areas and surrounding seas the weather and climate is associated with monsoon systems. This session aims to promote discussion on advances and current issues on all time scales (mesoscale, synoptic, intraseasonal, interannual, decadal/interdecadal, millenial) that are relevant to the understanding of the nature, mechanisms, and variability of monsoons, and to their prediction. Papers are invited regarding theoretical, observational, and modeling studies of the nature, variability and mechanisms of monsoons in the Southern Hemisphere, including but not limited to extreme events, the influence of the principal modes of climate variability in different time-scales, air-sea-land interactions, predictability, prediction, and consequences of anthropogenic climate change.

Invited speakers:
  • Gerald Meehl, National Center for Atmospheric Research, Boulder, CO, USA
  • Ernesto Hugo Berbery, Department of Atmospheric and Oceanic Science/ESSIC, University of Maryland, College Park, MD, USA

2. Tropical cyclones : past, present, future

  • Howard Diamond (NOAA National Climatic Data Center, Silver Spring, USA)
  • Matthew Wheeler (Bureau of Meteorology, Melbourne, Australia)
  • Kevin Tory (Bureau of Meteorology, Melbourne, Australia)

Tropical Cyclones are one of the most destructive phenomena on the planet. From the perspective of the Southern Hemisphere, tropical cyclones are significant weather and climate features in the southwest Pacific Ocean basin from French Polynesia to the eastern and northern coastlines of Australia, as well as in the south Indian Ocean basin from Australia to the east coast of Africa.  This session aims to promote discussion on advances and current issues on all space and time scales (e.g., mesoscale, synoptic, intraseasonal, and interseasonal) that are relevant to the understanding of tropical cyclones.  Papers are invited on weather and climatic aspects of tropical cyclones in the southern hemisphere including, but not limited to, short-term forecasts, short to long-term outlooks, tropical cyclone dynamics, climate studies, statistical analyses, simulation, observational needs, and modulation by climate change and variability.

Invited speakers:
  • Kevin Walsh, University of Melbourne, School of Earth Sciences
  • Steve Ready, New Zealand Met Service

3. Other severe weather systems: MCCs, cut off lows

  • Luis Gimeno (Environmental Physics Laboratory, Ourense, Spain)

The scope of the session covers all aspects of other severe weather systems occurring in the Southern Hemisphere with the exception of tropical cyclones, with a special focus on Mesoscale Convective Systems (MCS) and Cut off low (COL). An MCS results of deep moist convection developing from individual thunderstorm cells which merge into long-lived organized larger systems. They are capable of producing heavy rainfall and severe weather events but also are responsible for a good percentage of the total precipitation in any areas of the Southern Hemisphere being important in socioeconomic aspects of these regions. A cut-off low pressure system (COL) represents a closed low in the upper troposphere that has become completely detached (or "cut off ") from the characteristic westerly current of the jet stream, and which is usually advected towards the equatorial side of the mid-latitude westerlies. Systems related to COLs are capable of affecting the weather conditions at the earth's surface to a considerable degree for periods of several days at a time. The instability of the troposphere beneath the COL can lead to the occurrence of severe convective events, depending on surface conditions. COLs yield significant precipitation when the air mass below the COL is very moist and generates a potentially unstable condition. Such weather systems are among the most severe that affect any areas of the Southern Hemisphere and are responsible for some of the most catastrophic events in terms of their precipitation rate, especially during warm months.

All researchers, operational forecasters, and risk and emergency managers are invited to submit contributions. In the light of the global relevance of the session themes, participants from all over the world are welcome to attend.

Invited speakers:
  • Tercio Ambrizzi, University of Sao Paolo, Brazil
  • Dr René Garreaud, Department of Geophysics, Universidad de Chile

4. Intra-seasonal variability and prediction in the Southern Hemisphere

  • Matthew Wheeler (Bureau of Meteorology, Melbourne, Australia)
  • Agnes Kijazi (Tanzania Meteorological Agency, Dar es Salaam, Tanzania)
  • Alice Grimm (Department of Physics, Federal University of Paraná, Brazil)

Intraseasonal variability covers those time scales between synoptic weather and seasonal climate variability, while intraseasonal prediction generally covers the forecast range from the second week to two months. Phenomena in the Southern Hemisphere that are relevant to this time scale are the Madden Julian Oscillation, Southern Annular Mode, atmospheric blocking, land-atmosphere interaction, and stratospheric influences on the troposphere. Dynamical model prediction on this timescale involves its own special considerations, including the generation of ensembles, initialization of the land and atmosphere, and coupled model initialization shock. This session seeks papers that are focused on all aspects of the intraseasonal time scale including but not limited to theoretical work, observational analysis, modelling, prediction, and impacts. Papers addressing links between the intraseasonal and other time scales will also be considered.

Invited speakers:
  • Adrian Matthews, School of Environmental Sciences / School of Mathematics, University of East Anglia
  • Andrew Marshall, Centre for Australian Weather and Climate Research, Bureau of Meteorology

5. Interannual climate variability and Southern Hemisphere teleconnections

  • Rob Allan (Met Office Hadley Centre, Exeter, UK)
  • Marc Pontaud (CNRM, Météo-France, Toulouse, France)
  • Caroline Ummenhofer (Climate Change Research Center, University of New South Wales, Sydney, Australia)

The scientific focus on climatic variability on interannual timescales has a long history within weather and climate science fields.  In fact, efforts to develop and improve our ability to forecast and predict the influence and impacts of interannual climatic variability are second only to those with synoptic weather via numerical weather prediction techniques. 

In the 21st century, we are very cognisant of features in the global climate system which have strong definition on interannual timescales, particularly the North Atlantic Oscillation (NAO) and the El Niño-Southern Oscillation (ENSO) phenomena. This includes the vital role of teleconnections, which propagate the physical influence of climatic phenomena to regions remote from the core physical interactions that define them - such as those transmitting the climatic influence of the core ENSO dynamics in the Indo-Pacific domain to higher latitudes in both hemispheres or the impact of extratropical variability associated with the annular modes on the mid-latitudes.

This session invites papers on any aspect of interannual climate variability and teleconnections research relating to Southern Hemisphere climatic patterns.

6. Interdecadal climate variability and SH impacts

  • Carolina Vera  (Sea and Atmosphere Research Center, Bueno-Aires, Argentina)
  • Caroline Ummenhofer (Climate Change Research Center, University of New South Wales, Sydney, Australia)
  • Arne Biastoch (IFM-GEOMAR, Kiel, Germany)
  • Rob Allan (Met Office Hadley Centre, Exeter, UK)

Improving our ability to assess the impacts of variations and future changes in climate is crucial. It would enable governments, communities, and businesses to determine strategies to reduce potential negative impacts and to take advantage of opportunities by adapting infrastructure, activities and plans.  However, the issue about how much of the regional climate changes is attributable to natural variations and how much is due to anthropogenic activities has not yet been resolved. During recent decades there has been considerable effort in trying to understand the decadal and interdecadal variability of the climate system and very recently climate predictions on decadal timescales are becoming available through multi-model experiments like the WCRP/CMIP5. This session invites papers on the general topic of describing and understanding climate variability on interdecadal time scales as well as on assessing decadal predictions at both large and regional scales of the Southern Hemisphere. The session will also cover the impacts of climate variability interdecadal timescales on socio-economic activities.

Invited speakers:
  • Scott Power, Bureau of Meteorology, Melbourne
  • Gerald Meehl, National Center for Atmospheric Research, Boulder, CO, USA.

7. Climate predictability in the Southern Hemisphere

  • Marc Pontaud (CNRM, Météo-France, Toulouse, France)
  • CarolinaVera  (Sea and Atmosphere Research Center, Bueno-Aires, Argentina)

Demands are increasing for prediction in different time-scale: monthly, seasonal, annual up to decadal (near-term climate prediction). Prediction about the shortest climate time scales are already in application while the decadal prediction is a research issue identified in the current IPCC-AR5 experiment. These prediction exercises arise specific issues about initial conditions, hindcast simulations, ensemble approach, analysis methods, … This session invites papers about theoretical developments and results on climate prediction from month to decade focusing on southern hemisphere.

Invited speaker:
  • David Jones, Bureau of Meteorology, Melbourne, Australia

8. Climate change in the Southern Hemisphere

  • Robert Frouin (Scripps Institution of Oceanography, San Diego, USA)
  •  Jens Kruger (SOPAC, SPC, Nadi, Fiji)

The ocean and atmosphere of the Southern Hemisphere have undergone substantial changes in the past half century. These include rising atmospheric carbon dioxide levels, ozone losses, higher aerosol concentrations, increasing surface temperatures, shifts in circulation patterns, decreasing ocean pH, and retreating Antarctic sea ice. This session will address, via observations and/or modeling, trends in the physical and biological environment, the causes and mechanisms responsible for the observed changes, the effects on weather, currents, biogeochemical cycles, and ecosystems, the various feedbacks and linkages, and the prediction of future impacts for projected scenarios of climate change. 

Invited speakers:
  • David Karoly, University of Melbourne, School of Earth Sciences
  • Richard Somerville, Scripps Institution of Oceanography, University of California, San Diego, USA

9. Inter-ocean exchanges

  • Arne Biastoch (IFM-GEOMAR, Kiel, Germany)
  • Juliet Hermes (SAEON, Roggebaai, South Africa)

Inter-ocean exchanges are important for the global redistribution of momentum, heat and salt. In the Southern Hemisphere, the Drake Passage, Agulhas System, Indonesian Throughflow and the waters south of Australia act as ‘choke points’ in the global wind-driven and thermohaline circulation. Major international and regional observational and modelling initiatives act to determine and to monitor the amount of inter-ocean exchanges, and potentially detangle anthropogenic trends from multi-decadal changes. This session invites contributions which address latest findings on the inter-ocean exchanges and their role for the large-scale and global circulation.

Invited speakers:
  • Michael Meredith, British Antartic Survey, UK
  • Janet Sprintall, Scripps Institution of Oceanography, San Diego, USA

10. Ocean observing systems and operational oceanography

  • Andreas Schiller (CSIRO, Hobart, Australia)
  • Jerome Vialard (LOCEAN, IRD, Paris, France)
  • Juliet Hermes (SAEON, Roggebaai, South Africa)

The last 20 years have provided us with an unprecedented ability to observe, monitor and forecast the oceans. In-situ and remotely sensed ocean observations underpin many research and application areas, including climate research and operational oceanography. The latter aims to address many challenges with timescales from days to decades and regions ranging from coastal areas to the global ocean. This session invites presentations about the development of the global ocean observing system, the development and application of operational ocean forecasting systems and the relationship between operational oceanography and the design/development of an ocean observing system. This includes – but is not limited to:

  • the global and regional analyses and forecasting systems (incl. modelling and data assimilation);
  • the development and scientific testing of the next generation of systems covering bio-geochemical and eco-systems and extending from the open ocean into the shelf seas and coastal waters;
  • the exploitation of this capability in other applications (weather forecasting, seasonal and decadal prediction, climate change detection and its coastal impacts, etc);
  • the assessment of the contribution of the various components of the global ocean observing system and scientific guidance for improved design and implementation of the ocean observing system (e.g. Observing System Experiments (OSEs) and Observing System Simulation Experiments (OSSEs)).
Invited speakers:
  • Tong Lee, Jet Propulsion Laboratory, Pasadena, USA
  • Katy Hill, Integrated Marine Observing System, University of Tasmania

11. Southern Hemisphere Subtropical Convergence Zones: SPCZ, SACZ, SICZ (PCCSP-sponsored)

  • Scott Power  (Bureau of Meteorology, Melbourne, Australia)
  • Ken Takahashi (Intituto Geofisico del Peru, Lima, Peru)

Subtropical convergence zones (CZs) have a major influence on climate and the general circulation, and on life in many nations in the Southern Hemisphere.  Despite the importance of the SH CZs they have been relatively little studied compared with CZs in the northern hemisphere.  The purpose of this session is to hear from speakers and discuss e.g.,: what is known about the structure and other characteristics of the CZs;  comparisons and contrasts between the CZs; the impact of the CZs on climate and the ocean; the underlying physics of the CZs; variability in the  CZs from synoptic through to interdecadal and longer time-scales; our ability to simulate the SPCZ using climate models; and the impact of global warming on the CZs.

Invited speaker:
  • Wenju Cai, CSIRO, Aspendale, Australia

12. Southern Hemisphere Ocean circulation and climate

  • Rosemary Morrow (LEGOS-OMP, Toulouse, France)
  • Juliet Hermes (SAEON, Roggebaai, South Africa)
  • Arne Biastoch (IFM-GEOMAR, Kiel, Germany)

The southern hemisphere oceans play a key role in hemispheric and global ocean circulation, which in turn impacts on the carbon cycle, regional ecosystems, and sea level rise. Complex interactions occur between the atmosphere, ocean, cryosphere and marine organisms, which are all evolving over time.  Recent advances in observations and modelling of finer-scale structures in the southern hemisphere oceans have allowed a better understanding of the ocean circulation, and its impact on the carbon cycle, ecosystems, and the global overturning circulation. This session invites papers which address the current state of knowledge concerning the role of the southern hemisphere oceans in the global climate system.

Invited speakers:
  • Matthew England, University of New South Wales
  • Tomoki Tozuka, University of Tokyo

13. Southern Hemisphere Island weather and oceanography: past and future

  • Jim Renwick (Climate Variability and Change, NIWA, Wellington, New Zealand)
  • Isabelle Ansorge (Marine Research Insitute, University of Cape Town, South Africa)

The Southern Hemisphere is home to a large number of small and often isolated islands, with climates ranging from tropical to sub-antarctic. Observations from several key islands are a critical component of the global observation network. This session will explore the meteorology and oceanography of the various island climates, their oceanographic settings, and how these are likely to change in the future

14. From Climate Change Science to Adaptation

  • Brian Dawson (Secretariat of the Pacific Community, Noumea)

The scientific understanding of climate change is rapidly improving and an increasing body of scientific evidence is becoming available to decision makers.

However, the transfer of knowledge from the scientific community in a form that is readily understandable to decision makers needs much greater attention. There needs to be stronger two-way linkage between key decision makers and the science community to ensure that available resources are deployed effectively and that the scientific work undertaken meets the needs of decision makers in terms of planning, prioritising and implementing climate change adaptation measures.

There is also a need for decision makers to become more actively involved with the climate change science community and more clearly articulate the information and knowledge gaps. Furthermore, building stronger links between the atmospheric and oceanographic scientists and those that study the impact of climate change on ecosystems and biodiversity is also needed to ensure that the available scientific knowledge is used effectively.

This session will focus on approaches to effectively disseminating the outcomes of scientific research to decision makers and the community and building stronger cross linkages with other members of the science community.

17. Climate change in developing SH island countries (PCCSP-sponsored)

  • Scott Power  (Bureau of Meteorology, Melbourne, Australia)
  • Brad Murphy (Bureau of Meteorology, Melbourne, Australia)

Many small island states in the Southern Hemisphere are vulnerable to the impacts of climate variability and climate change. This session will cover what is known about climate and climate change in and around such countries. Issues to be addressed include: how has climate changed in the region? what caused the changes evident? how might climate and the ocean in the region change in the future? Information presented will include an overview of recent research conducted for 15 countries participating in the Pacific Climate Change Science Program (PCCSP). Presentations on research from other regions and other countries is strongly encouraged.

Invited speakers:
  • Damien Irving, Centre for Australian Weather and Climate Research, CSIRO, Australia
  • Jack Katzfey, CSIRO Marine and Atmospheric Research, Centre for Australian Weather and Climate Research
  • Jaclyn Brown, CAWCR, CSIRO Hobart.

Special Sessions

15. ACRE – Atmospheric Circulation Reconstructions over the Earth

  • Rob Allan (Met Office Hadley Centre, Exeter, UK)
  • Philippe Frayssinet, (Météo-France, Nouméa, New Caledonia)

The international Atmospheric Circulation Reconstructions over the Earth (ACRE) Initiative (http://www.met-acre.org/) both undertakes and facilitates the recovery of historical instrumental surface global weather observations to underpin three dimensional reanalyses spanning the last 200-250 years for the needs of climate science and climate applications, educators and students, and citizens worldwide.

Under its international umbrella, that links more than 35 projects, institutions, and organisations around the globe (http://www.met-acre.org/Home/ACRE_G2.png?attredirects=0), ACRE has both developed, and is looking to develop, regional foci which will hone its efforts to recover, image, digitise and archive historical instrumental surface terrestrial and marine weather observations in regions with untapped or under-represented data potential. The regional activities with ACRE Chile, ACRE Pacific, ACRE India and ACRE SE Asia will be specifically highlighted in this Special Session, as will the Initiative’s efforts to develop ACRE Africa and ACRE China. This Special Session is not limited to those working with or linked to ACRE, and papers dealing with any use of the Initiative’s products, especially the ACRE-facilitated 20CR, are encouraged.

Invited speakers:
  • Pene Lefale, National Institute of Water & Atmosphere (NIWA), Auckland, New Zealand
  • Andrew Lorrey, National Institute of Water & Atmosphere (NIWA), Auckland, New Zealand

16. Southwest Pacific Ocean Circulation and Climate Experiment (SPICE)

  • Sophie Cravatte (IRD, Nouméa)
  • William Kessler (Pacific Marine Environment Laboratory, NOAA, Seattle)
  • Alexandre Ganachaud (LEGOS, IRD, Nouméa)

SPICE is a regionally coordinated experiment. Its goal is to observe, model and understand the role of the Southwest Pacific ocean circulation in the large-scale, low- frequency modulation of climate from the Tasman Sea to the equator, and the generation of local climate signatures whose diagnosis will aid regional sustainable development. This session is not limited to research officially linked to SPICE. Papers are invited on any aspect concerning the Southwest Pacific: oceanic circulation in the Coral, Solomon and Tasman seas; heat and mass transports; properties and dynamics of the strong boundary currents and jets; water mass transformations in the region, and their effects on the local and global climate; air-sea interactions.

Submissions are also encouraged on processes concerning the South Pacific Convergence Zone.

Invited speakers:
  • Bo Qiu, Department of Oceanography, University of Hawaii at Manoa.
  • Andreas Schiller, CSIRO, Hobart, Australia

Updated 08/24/2012

Contacts | Mentions légales

American Meteorological Society Météo-France IRD