The international Montreal Protocol on Substances that Deplete the Ozone Layer requires that the Parties assess the control measures on the basis of available scientific, environmental, technical, and economic information. To achieve this, the Parties are required to convene appropriate panels of experts who will report their conclusions to the Parties. The 2010 Scientific Assessment of Ozone Depletion is now underway and is the seventh in the set of major assessments prepared by the Scientific Assessment Panel as direct input to the Montreal Protocol process. This talk will highlight our current understanding of stratospheric ozone and its related science issues as we embark on this next assessment. Specific points of focus will include: ozone depleting substances, ozone observations and projections, ground level ultraviolet radiation, greenhouse gases and ozone, and scientific gaps and needs.

Location: Physics Bldg., Room 401