And secondly, based on how much carbon dioxide is released with each breath. First, based on how many Calories a “typical” human consumes. The air is pumped in from the top of the tower into the laboratory building, when it is analyzed for the fraction of carbon dioxide and other trace gases. It is located almost at the southern tip of Africa.įigure 1b Close-up of GAWS tower. 30-meter tall Global Atmosphere Watch Station (GAWS) tower from a distance. I returned home, resolving to estimate how much carbon dioxide an average human gives off in a given day simply by breathing.įigure 1a. Standing for much of two days with groups of students at the base of the weather tower at the GAWS site at Cape Point, I found myself wondering how much we were contributing to the carbon dioxide in the atmosphere. The carbon dioxide record goes back to 1978, showing a rise comparable to that seen in the Northern Hemisphere. As part of their field activities, the students visited the Global Atmosphere Watch station (GAWS) at Cape Point, where carbon dioxide and several other trace gases are measured from the top of a 30-m tower. This blog was inspired by activities at the 2008 GLOBE Learning Expedition (GLE) in South Africa.
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