The Math
This climate + package assumes over one year your friend emits 31.8 metric tons of CO2. As a gift for them you are going to offset their entire year.
| Driving |
3.815 MT C02 |
| Food |
2.5 MT of CO2 |
| Energy |
7.5 MT of CO2 |
| Phones |
5.6 MT CO2 |
| Shopping |
6.21MT CO2 |
| Flights |
3.3097 MT CO2 |
| Hotels |
1.085 MT CO2 |
| Netflix |
1.752 MT CO2 |
| Total |
31.7717 MT CO2 |
Driving
This climate + package assumes over one year your friend emits 31.8 metric
tons of CO2. As a gift for them you are going to offset their entire year.
The average Canadian drives 15,200km per year.
The average car uses about 404 grams of CO2 per mile. To translate from
miles to kilometres, we divide miles by 1.609, and simultaneously divide
grams by 1.609. This means the average car uses about 251 grams of C02 per
mile.
(divide by 1.609) 1: 404grams (divide by 1.609)
0.6214: 251grams
Then we multiply 251 grams of C02 per kilometer by 15,200 kilometres to
see how many grams of CO2 are used per year.
251 grams of C02 / kilometer x 15,200 km = 3,815,200 grams of C02 per year
In order to change grams to metric tons, we multiply grams by 0.0000001.
Once we do this we get 3.185 metric tons of C02 per year.
3,815,200 grams C02 per year = 3.815 MT C02 per year
Food
The average person, with a diet including meat, dairy, fruits and
vegetables and cereals emits 2.5 MT of CO2 per year.
Energy
The average household emits 7.5 MT of CO2 per year including laundry,
showers, heating and cooling and appliances.
Phones
If a person uses their phone for one hour per day over a year they would
emit 1.4 tons of CO2.
The average person spends 3-5 hours per day on their phone. Which means
over a year the average individual would emit 5.6 tons of CO2 for phone
usage.
1.4 tons CO2 x 4 hours = 5.6 MT CO2
Shopping
Let’s assume the average person shops for clothing about once per month.
We know the average plane emits 115grams of carbon per kilometer, let’s
assume the clothing came from 4500km away.
115 grams CO2 per km x 4500km x 12 months = 6,210,000 grams of CO2
In order to change grams of CO2 to metric tons of CO2 we use the
conversion factor 0.0000001
6,210,000 grams CO2 x 0.000001 = 6.21MT CO2
Flights
Planes emit 115g CO2 per kilometer. We use the conversion factor 0.000001
to get from grams to metric tons and we get 0.000115 MT of CO2 per
kilometer of air travel.
115grams x 0.000001 = 0.000115 MT Carbon
Let’s assume that over the year this person flies from Vancouver to
Toronto twice per year, which is 6,710km round trip and 13,420 for two
trips. This person also flies to Europe once per year, this year they go
to Denmark which is 7,680km one way, and 15,360km both ways. In total,
this couple is flying 28,780km per year.
13,420km + 15,340km = 28,780 km
In order to get the total emissions, we multiply 0.000115 by 28,780 km and
get 3.3097MT CO2.
0.000115 MT x 28,780 = 3.3097 MT CO2
Hotels
Hotels emit about 31kg of CO2 per room per night. Assuming this individual
stays at hotels 35 nights per year during their vacations, and each night
emits 31kg CO2, they will emit a total of 930kg of CO2 from hotels.
35 x 31kg = 1,085kg CO2
In order to change this number from kilograms of CO2 to metric tons of CO2
we use the conversion factor 0.001.
1,085kg CO2 x 0.001 = 1.085 MT CO2
Netflix
Every half hour of Netflix watched emits 1.6kg of CO2. Since the average
person watches 1.5 hours of Netflix per day, we multiply emissions per
hour, by hours per day to get total emissions per day.
1.5 hours per day is equal to 3,30 minute segments.
1.6kg CO2/ half hour x 3 half hours = 4.8kg CO2 per day
To find the annual total we multiply emissions per day by 365 days in the
year, this calculation gives us 1,752 kg CO2 over one year.
4.8kg of CO2 x 365 days = 1,752 kg CO2
In order to change kilograms into metric tons, we use the conversion
factor of 0.001 tons for every kilogram. When we multiply 1,752 g by the
conversion factor, we get 1.752 MT of CO2 emissions per year.
1,752kg CO2 x 0.001 = 1.752 MT CO2 per year
Total
In total over one year the average person would emit 31.7717 MT CO2
3.815 MT + 2.5 MT + 7.5 MT + 5.6 MT + 6.21 MT + 3.3097 MT+ 1.085 MT +
1.752 = 31.7717 MT CO2
