Making small-scale classroom greenhouse gas flux calculations using a handmade gas capture hood.

Peter W. Schouten, Ashok Sharma, Stewart Burn, Nigel Goodman, Alfio Parisi, Nalhan Downs, Charles Lemckert

Research output: Contribution to journalArticle

Abstract

The emissions of various types of greenhouse gases (GHGs) from natural and industrial sources are undergoing a great deal of scrutiny around the world. The three main GHGs that are of most concern are carbon dioxide (CO2), nitrous oxide (N2O) and methane (CH4). CO2, N2O and CH4 are all efficient absorbers and emitters of thermal infrared radiation, and as a result, once they are emitted into the atmosphere, they can contribute directly to the greenhouse effect. One of the most popular GHG measurement techniques is near dispersive infrared (NDIR) gas analysis. This paper describes a high school Physics or general science practical exercise that uses an inexpensive NDIR based gas analysis unit combined with a gas capture hood to measure CO2 gas flux from different water types and soil/fertiliser combinations. From this, students will gain an understanding of how GHGs are emitted from natural sources and how they are measured by scientists.
Original languageEnglish
Pages (from-to)48-53
Number of pages6
JournalTeaching Science
Volume59
Issue number1
Publication statusPublished - 1 Mar 2013
Externally publishedYes

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Schouten, P. W., Sharma, A., Burn, S., Goodman, N., Parisi, A., Downs, N., & Lemckert, C. (2013). Making small-scale classroom greenhouse gas flux calculations using a handmade gas capture hood. Teaching Science, 59(1), 48-53.