HR: 1340h
AN: ED13A-0717    [Abstracts]
TI: Mass Balance and Atmospheric Chlorofluorocarbon CFC-12: Using Interactive Online Models and Data in Introductory Atmospheric Science.
AU: * MacKay, R M
EM: rmackay@clark.edu
AF: Clark College Physics and Meteorology, 1800 E McLoughlin Blvd., Vancouver, WA 98663 United States
AU: Manduca, C A
EM: cmanduca@carleton.edu
AF: Science Education Resource Center, Carleton College, One North College St., Northfield, MN 55057 United States
AB: We present an interactive online "Mass Balance Model" that is useful for introducing students to the connection between flow rates, total accumulation, and residence time in a generic system. This mass balance model has been modified for application to trace gases in the atmosphere. Students use the "Trace Gas Model" to: 1) simulate actual levels of chlorofluorocarbon (CFC-12) in the atmosphere for the recent past; 2) simulate future levels of CFC-12 for different assumed emission scenarios; 3) help them understand the connection between long CFC-12 residence time and viable emission reduction policies to help limit future CFC-12 buildup and stratospheric ozone loss. Student survey results suggest positive student attitudes towards the online learning environment and using it to explore a topic of current public interest. The activities are presently available online as examples on the NSDL Starting Point site. Starting Point is a compilation of resources for instructors of introductory geoscience courses. Examples of Starting Point modules on how to incorporate innovative teaching methods into your introductory geoscience courses include: Lecture Demonstrations, Teaching With Data, Teaching With Models, Role Playing, and Socratic Questioning.
UR: http://serc.carleton.edu/introgeo/index.html
DE: 1600 GLOBAL CHANGE (New category)
DE: 0300 ATMOSPHERIC COMPOSITION AND STRUCTURE
DE: 0810 Post-secondary education
DE: 0825 Teaching methods
SC: Education and Human Resourcese [ED]
MN: 2004 AGU Fall Meeting