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Carbon Footprint means measuring in units of CO2 our Personal Carbon Footprint (ie. a representation of the effect you have on the climate in terms of the total volume of greenhouse gases that your Lifestyle Behaviour produces).  In simple terms, Carbon Footprint is a measure of the amount of CO2 one's Lifestyle Behaviour emits into the atmosphere from combusting Fossil Fuels.

The same measurement technique can measure one's employer's Carbon Footprint, but obviously it is a much larger and more dynamic task, involving extensive modelling, depending on the size of one's employer.  Large employers leave an 'Industry Carbon Footprint'.

Most human's actions generate CO2 emissions, which contribute to accelerating Global Warming/Climate Change.

By measuring one's Personal Carbon Footprint, one can get a better sense of the CO2 stain we leave from our Primary Energy Carbon Contributors from our Lifestyle Behaviour.  Whereupon you can more readily take effective action to reduce your Personal Carbon Footprint, thereby minimizing your personal impact on Climate Change.

For example, when you drive a car, each litre of petrol you burn produces CO2 emissions that is emitted into the atmosphere depending on -

(i)         the fuel efficiency of your vehicle;

(ii)        how hard you drive;  and

(iii)       how far you drive.

Almost everything you do affects it: turning on a dish washer, driving a car, buying food, taking a ride on a passenger jet.

Every animal leaves a carbon footprint because it breathes in oxygen and exhales CO2 and also ejects methane which creates more caustic emissions than CO2.  Cows and horses are particularly high emitters of methane.

Australia’s Carbon Footprint is prima facie the Average Australian's Current Carbon Footprint  x  the population of Australia which is 21.4 million

Carbon Footprint is measured in weight (tons or kilograms) or land area (hectares).  Conservative estimates are that the planet can regenerate 3.96 tonnes equating to 1.8 global hectares per person for each of its 6.642 billion inhabitants p.a.

Methodology and formulae to calculate a Personal Carbon Footprint and a nation's Carbon Footprint.

Breakdown of a typical person's carbon footprint

A Carbon Footprint has a primary and secondary component:

1. Primary footprint measures of our direct emissions of CO2 from the burning of Fossil Fuels including domestic energy consumption and transportation (e.g. car and plane).

2. Secondary footprint measures of the indirect CO2 emissions from the whole lifecycle of products we use - those associated with their manufacture and eventual breakdown.