To calculate the CO2 emissions from commuting, let's break it down:
Given Data:
Total people: 100,000
Distribution:
Texas: 50% → 50,000 people
India: 30% → 30,000 people
Europe: 20% → 20,000 people
Commute time: 1 hour each way (2 hours total per day)
Assumption: Everyone uses a car for commuting.
Step 1: Estimate Distance Traveled
Average car speed:
Texas: ~35 mph (56 km/h)
India: ~20 mph (32 km/h)
Europe: ~25 mph (40 km/h)
Average daily distance:
Texas: 70 miles (112 km)
India: 40 miles (64 km)
Europe: 50 miles (80 km)
Step 2: Estimate CO2 Emissions per Person
Average CO2 emissions per km driven:
Texas: 180 g/km (typical for gasoline cars in the US)
India: 130 g/km (smaller cars, lower emissions)
Europe: 120 g/km (stricter emissions standards)
Daily emissions per person:
Texas: g (20.16 kg CO2)
India: g (8.32 kg CO2)
Europe: g (9.6 kg CO2)
Step 3: Calculate Total Daily Emissions
Texas: kg (1,008 metric tons)
India: kg (249.6 metric tons)
Europe: kg (192 metric tons)
Total Daily CO2 Emissions:
1,008 + 249.6 + 192 = 1,449.6 \text{ metric tons CO2 per day}
Total Yearly CO2 Emissions:
1,449.6 \times 250 \text{ (workdays per year)} = 362,400 \text{ metric tons CO2 per year}
Conclusion:
This commuting pattern would produce approximately 1,450 metric tons of CO2 per day or 362,400 metric tons of CO2 per year, assuming 250 workdays.