The following schedule of press conferences is subject to change, before or during Joint Assembly. Press conferences may be added or dropped, their titles and emphases may change, and participants may change. All updates to this schedule will be announced in the Press Room (MTCC, South Building, Level 700, Room 709). Press conferences take place in the Press Conference Room (Room 712), which is across the hall.
Times for press conferences are Eastern Daylight Time. Session numbers at the end of each press conference listing may show only the first in a series of related sessions on the topic.
Researchers studying the polar atmosphere have recently caught sight of high-flying waves of air that span up to several hundred kilometers, move as fast as hundreds of kilometers per hour, and transport energy between atmospheric layers with important, but little-understood consequences. Although scientists had previously detected traces of these waves, new observations clearly reveal their motions in three dimensions and may enable researchers soon to trace the waves back to their causes such as specific thunderstorms or winds striking mountains. The comprehensive picture now emerging of the waves should improve atmospheric models used to understand Earth's climate, atmospheric chemistry, and other processes, the wave observers say. Providing these unprecedented portraits of the waves is a new type of radar aided by the aurora. In polar regions, such as Alaska and Canada, the aurora acts like a "flashlight" that illuminates the regions where the waves from the mountains break like ocean waves hitting the shore.
AMISR Principal Investigator, SRI International, Menlo Park, California, USA
Research Scientist, SRI International, Menlo Park, California, USA
Research Scientist, Northwest Research Associates, CoRA Division, Boulder, Colorado, USA
Associate Professor, Department of Physics and Astronomy, University of Calgary, Calgary, Alberta, Canada
Preliminary snapshots of ancient Earth are emerging from a project to determine arrangements of Earth's continents as far back as billions of years ago, long before the supercontinent Pangea. With improvements in recovering and analyzing small grains of rare minerals with radioactive clocks, it is possible for the first time for scientists to routinely and precisely age-date short duration, huge volume, volcanic events, known as Large Igneous Provinces (LIPs), and to correlate components of those volcanic 'plumbing systems' across pieces of fragmented continents. In proof-of-concept tests, researchers find that about 2.7 billion to 2.0 billion years ago: eastern Quebec was bordered by Zimbabwe (with rich ore deposits traceable between the two regions), southern Ontario and Quebec were bordered by northern Europe, and northern Quebec and Labrador were linked to southern Greenland. Mining and oil companies are sponsoring the new, 5-year, industry-government-university project with the expectation of a competitive advantage in the search for new resources.
Richard E. Ernst (project coordinator and co-leader) CAMIRO Research Fellow in Large Igneous Provinces, Dept. of Earth Sciences, U. of Otttawa, Ottawa, Canada
Wouter Bleeker (project co-leader) Research Scientist, Geological Survey of Canada, Ottawa, Canada
Michael A. Hamilton (geochronology co-leader) Asst. Professor of Geology, and Director of the Jack Satterly Geochronology Lab, Department of Geology, University of Toronto, Toronto, Canada
Recent radar observations are revealing surprising links between parts of the atmosphere and may lead to more understanding of conditions in the outermost layer known as both the thermosphere and the ionosphere (the ionosphere is the electrically charged portion of the layer). Daily variations in properties of the thermosphere/ionosphere influence navigation and communication of satellite-based systems. Scientists have long known of disturbances in wind and temperature patterns of a lower atmospheric layer, the stratosphere, which in turn can affect conditions near Earth's surface. Now researchers are finding that disturbances in the stratosphere at the poles have simultaneous and puzzling correlations with large changes in thermospheric/ionospheric conditions in far-distant parts of the globe. For instance, the most startling observations show that the thermosphere/ionosphere several hundred kilometers above the equator undergoes large changes in close correlation with the polar stratosphere disturbances. The unusually quiet solar minimum, which has reduced atmospheric influence by the sun, is helping researchers detect these unforeseen connections.
Jorge Luis Chau
Director, Jicamarca Radio Observatory, Geophysical Institute of Peru, Lima, Peru
Research Scientist, Massachusetts Institute of Technology, Haystack Observatory, Westford, Massachusetts, USA
Scientist, High Altitude Observatory, National Center for Atmospheric Research, Boulder, Colorado, USA
Meteorites, being rocks from space, are solid samples of places in the Solar System to which we cannot easily go. The study of their physical and mineralogical characteristics provides insights into the diversity of processes involved in their origin. Likewise, the conditions under which they fall to Earth provide links to their asteroid or planetary parent bodies. Speakers will discuss new results regarding detection of organic molecules important for life in the unique Tagish Lake, B.C. meteorite (Herd), special conditions of formation of the 1000-year old Whitecourt, Alberta impact crater (Kofman), and the spectacular November 20, 2008 fireball that resulted in the fall of the Buzzard Coulee, Saskatchewan meteorite (Hildebrand).
Canada Research Chair in Planetary Science, Coordinator of the Canadian Fireball Reporting Centre, Department of Geoscience, University of Calgary, Calgary, Alberta, Canada
Department of Earth and Atmospheric Sciences, University of Alberta, Edmonton, Alberta, Canada
Associate Professor, Department of Earth and Atmospheric Sciences, University of Alberta, Edmonton, Alberta, Canada
Scientists have mostly observed the energetic connection between our Sun and planets at times of high solar activity. Now, during one of the deepest solar minima on record, solar, magnetosphere, and atmospheric physicists are working together to better understand the Sun's influence on climate. The current weakening of both solar-wind pressure and intensity of the interplanetary magnetic field have affected the whole heliosphere configuration. Earth's magnetosphere and radiation belts are at a low-level state not seen before in the modern era. Exploiting this unique opportunity, researchers are investigating how neutral and ionized components of planetary atmospheres behave. At the same time, new atmospheric models that couple all layers of the atmosphere allow scientists to investigate how solar effects at high altitudes influence the lower atmosphere.
Joanna Haigh Professor of Atmospheric Physics, Space and Atmospheric Physics Research Group, Imperial College, London, United Kingdom
Christopher Russell Professor of Geophysics and Space Physics, Institute of Geophysics and Planetary Physics, University of California, Los Angeles, Los Angeles, California, USA
Scott M. Bailey Associate Professor, Center for Space Science and Engineering, Bradley Department of Electrical and Computer Engineering, Virginia Polytechnic Institute and State University, Blacksburg, Virginia, USA
New studies reveal that magnetic blast waves pinpoint and predict the location, at the edge of space, where space storms dissipate their energy. This epicentre marks the location where the energy equivalent to 50 billion watts of power, or the output of 10 of the world's largest power stations, is dumped into the atmosphere. Waves from bursts of energy released in explosions in space, known as substorms, impact the atmosphere right at the edge of space. The discovery of the magnetic epicentre provides scientists with a new magnetic seismic locator for the impact.
The epicentre locates and provides several minutes advance warning of the area from which the most beautiful auroral displays occur. Much like in an earthquake, these magnetic tremors start at a specific location and propagate away from the epicentre in all directions across continent scales at speeds of around 150,000 kilometers per hour (93,205 miles per hour). The magneto-seismology of space offers scientists a new tool for understanding the expansion rate of the blast wave, aiding the scientific understanding of space weather, and ultimately the prediction of severe impacts on communication and strategic satellites.
I. Jonathan Rae
Research Associate, Study Leader, University of Alberta, Edmonton, Canada
Ian R. Mann
Canada Research Chair in Space Physics, University of Alberta, Edmonton, Canada
Director General of Space Science, Canadian Space Agency, Saint-Hubert, Quebec, Canada
From heat waves and floods to hurricanes, a string of damaging weather events have devastated lives and made headlines over the past few years. These events have raised a question among insurers over whether the events are part of a long term trend. Likewise, the public would like to know if human emissions of greenhouse gases are in part to blame for specific events. To answer these questions, researchers have been developing new modeling and analysis techniques. These include regional climate models with higher spatial resolution, large samples of model simulations, and new means to sort out cause and effect in extreme weather phenomena.
Associate Professor, Department of Earth and Atmospheric Sciences; also Interim Director, Purdue Climate Change Research Center; Purdue University, West Lafayette, Indiana, USA
Postdoctoral fellow, Climate Systems Analysis Group, University of Cape Town, South Africa and Department of Atmospheric, Oceanic and Planetary Physics, University of Oxford, UK
Justin T. Schoof
Assistant Professor, Department of Geography and Environmental Resources, Southern Illinois University, Carbondale, Illinois, USA
Extraordinary views beneath Earth's surface indicate that the so-called "stable" part of central and eastern North America is in fact an extremely complex system. What's more, the easternmost part of the continent may one day evolve into an active plate boundary, with a system of subduction like that currently in process beneath the West Coast. The combined Earthscope and POLARIS projects are allowing scientists to image the Earth's structure beneath North America at an unprecedented level of detail. Using techniques similar to medical imaging, the projects are providing new information on the evolution of the continent and on present-day geologic processes. Having already generated a remarkable set of images of subsurface structure in the western US, the dense "USArray" seismograph network will progress into central and eastern regions.
Suzan van der Lee
Assistant Professor, Department of Earth and Planetary Science; Northwestern University, Evanston, Illinois, USA
Research Associate, Center for Imaging the Earth's Interior, University of Colorado, Boulder, Colorado, USA
USArray Director, Incorporated Research Institutions for Seismology (IRIS), Washington, D.C., USA