The figure is showing the variation in green house gas emissions of households with equal income along with variation in contributing factors. Households are grouped in deciles 1-10 (low – high emissions). The 10 % of households with highest GHG emissions (group 10) also has the highest car use, the highest share of single family housing, the most m2 of floor space per person and have the lowest use of green heating (district heating or renewables).
The empirical basis is the Swiss income and expenditure surveys (2000–2003). These four annual surveys include a total of 14,300 households, which reported all their daily purchases for one month. In addition, information on the available durable goods, household characteristics, dwelling, etc. was collected (BFS, 2003). To assess the total GHG emissions of the households functional units were used for describing household demand.
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Fly only for distances greater than 700 km. Otherwise take the train. A transatlantic flight produces almost half as much CO2 as an average person produces over a period of one year while meeting all his or her other needs, such as lighting, heating and car travel!
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