Nova Scotian Institute of Science

Promoting Science in Nova Scotia

The schedule for the 2009–2010 public lecture series is available here. As always, the lectures are free and presented at a level that can be understood by everybody who wants to know more about science taking place in Nova Scotia.

Please visit our new Blog, intended to feature science lectures and events taking place in Nova Scotia, but not necessarily sponsored by NSIS.

Sable Island Update Special Event co-sponsored by NSIS. Join us on March 3 for illustrated talks about research, operations, and island status. Followed by a Question and Answer Session, and Reception.

Next Regular Meeting of the NSIS — Monday, 1 March 2010

Time:	7:30 p.m.
Location:	Nova Scotia Museum of Natural History
	1747 Summer St., Halifax

Speaker:	Karen Le Bris
	Department of Physics Saint Francis Xavier University

Title:	Greenhouse effect and ozone depletion-monitoring: trace gas-detection by spectroscopic techniques

ABSTRACT

Anthropogenic trace gases have a great influence on the chemistry and radiative balance of the atmosphere. Substances, such as chlorofluorocarbons, are known for damaging the ozone layer. Enhanced emissions of greenhouse gases may now be leading to a global warming of the Earth's climate.
Reliable modeling of climate change and stratospheric ozone monitoring can only come from an accurate knowledge of the composition of the atmosphere. Over the last 20 years, an unprecedented number of satellite, balloon and ground-based measurement programs have been developed to sound the atmosphere using optical spectroscopy. The presentation will provide an overview of the current optical techniques of trace gas detection as well as an introduction to new techniques under development.

Cancellations due to inclement weather will be posted here and announced on CBC Radio 1, 90.5 FM, as soon as possible.

For further information, please contact the NSIS President, David Richardson, at the Institute's email address: nsis@chebucto.ns.ca.

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