nitipak samsen / Designer

In the process of developing the BuyProduct project, I designed a tree measuring tape for children. This tape translates how much CO2 absorbed in the tree into the amount of activities rather than grams of CO2, e.g. 1 hour on a flight or 2 days of breathing.



Just click on this LINK




The CO2 footprint calculations base on many online CO2 calculators, also pint of lager and cheese burger.

Human breathing reference:
"For every dry tonne of new plant biomass produced through photosynthesis, approximately 1.4 tons (1,273 kg) of oxygen are added to the atmosphere and approximately 1.8 tons (1,273 kg) of carbon dioxide are removed.
Studies conducted by the US and Russian space agencies show that astronauts consume approximately 2.0 lb (0.9 kg) of oxygen and exhale approximately 2.4 lb (1.1 kg) of carbon dioxide every 24 hours. Based on this data, approximately 1.5 lb (0.64 kg) of new dry plant material must be produced by photosysthesis each day to supply the oxygen needs of one adult.
From “How to Grow Fresh Air, 50 houseplants that purify your home or office” by Dr. B.C. Wolverton.

so it is 1.1kg of CO2/day

Air traveling reference: from
5931 miles London - Bangkok = 1068 kg of CO2 it takes around 12 hrs
so t is1.48 kg/mins

Electricity bill reference:
in the UK 1 kWh creates around 0.5 kg of CO2
we pay around 10p per kWh in the UK (reference)
so it is 5kg of CO2/1£

In USA, 1kWh creates around 0.6 kg of CO2. source
Although the electricity price depends on State, but average is 11cents/kWh. source
So it is 5.45kg of CO2/1$

Australia is heavily dependent on coal for electricity, 1 kWh creates around 0.95 kg of CO2. source
And it costs around 5cents per 1 kWh. source
So it is 19kg of CO2/1A$

The CO2 in the tree calculation bases on North Sydney Council Carbon Calculator

* Calculation of above ground biomass is based on allometrics in Snowdon, P., Eamus, D., Gibbons, P., Khanna, P., Keith, H., Raison, J. & Kirschbaum, M. (2000). "Synthesis of Allometrics, Review of Root Biomass and Design of Future Woody Biomass Sampling Strategies: National Carbon Accounting System - Technical Report No. 17." Department of Climate Change, Canberra.
* Carbon was assumed to be 50% of total biomass: Gifford, Roger M. (2000). "Carbon Contents of Above-Ground Tissues of Forest and Woodland Trees: National Carbon Accounting System - Technical Report No. 22." Department of Climate Change, Canberra.
* The very vexed question of the ratio of below to above ground biomass (see Keith, H., Barrett, D. & Keenawas, R. (2000) "Review of Allometric Relationships for Estimating Woody Biomass for New South Wales, the Australian Capital Territory, Victoria, Tasmania and South Australia National Carbon Accounting System - Technical Report No. 5B." Department of Climate Change, Canberra.) was sidestepped by (over) simplifying and using the default value of 0.25 for all forest classes, as used in the National Greenhouse Gas Inventory Workbook 2 (1997), on the basis of reports in Cooper (1983) and Ulrich et al. (1981).