Methodology & Scientific Sources
Mathematical models, IPCC emission factors, altitude grade multipliers, and governance versioning.
Scientific Transparency Notice: Emission constants and altitude multipliers are illustrative approximations derived from ARAI standards, IPCC Chapter 8 guidelines, and local Himalayan fuel consumption observation surveys. They are intended for educational tourism impact analysis.
1. Transport Emission Formulation
Vehicle-based modes (SUV, Sedan, EV):
kg CO₂e/person = (distance_km × emission_factor_g × terrain_multiplier) ÷ (passengers × 1000)
Shared public transit (UTC Bus):
kg CO₂e/person = (distance_km × transit_factor_g × terrain_multiplier) ÷ 1000
Diesel SUV
180 g CO₂e/vkm
ARAI Real-world
Petrol Sedan
140 g CO₂e/vkm
ARAI Standard
Electric Vehicle
45 g CO₂e/vkm
Northern Grid CEA
Shared UTC Bus
30 g CO₂e/pkm
Uttarakhand Transport
2. Altitude Elevation Multipliers
Mountain switchbacks and continuous upward gradient force engines into higher RPM low-gear operation, compounding fuel consumption and tailpipe carbon output compared to plains driving.
Foothills Zone
1.00×
<800m AMSL (Ramnagar, Haridwar plain corridors)
Mid-Hills Zone
1.25×
800m – 2,400m AMSL (Nainital, Almora, Mussoorie)
High Altitude Alpine
1.40×
>2,400m AMSL (Chopta, Joshimath, Auli, Kedarnath)
3. Accommodation Intensity Factors
Luxury Resort
24.0 kg/night
Central HVAC, pools, diesel generators
Standard Hotel
9.0 kg/night
Conventional water heating & electricity
Pahadi Homestay
6.0 kg/night
Solar geysers, low food-mile cuisine
Eco-Camp
3.5 kg/night
Minimal electricity, solar lanterns