Methodological advancements to estimate the climate impacts of household travel in Vancouver
研究了加拿大温哥华家庭出行的温室气体排放，发现97%来自汽车，步行便利性和区域公交可达性与低排放相关，并比较了两种碳核算方法的差异及公平性影响。
This study examines greenhouse gas (GHG) emissions associated with household travel in Vancouver, Canada using both consequential and attributional carbon accounting frameworks, and investigates relationships with personal, neighbourhood, and contextual factors. Most GHG emissions (97%) are generated by automobile use, and a large share (41%) are from non-operating fuel and vehicle life cycle phases. We estimate average GHG emissions from travel of 10 kg CO 2 e per person per day and 25 kg CO 2 e per household per day; average GHG emission rates range from 230 to 290 g CO 2 e per person-kilometre travelled. Greater neighbourhood walkability and regional transit access are associated with lower GHG emissions, even after controlling for factors such as income and vehicle ownership. The difference in estimated GHG from consequential versus attributional accounting methods is small in aggregate (3% lower), but large for individuals who use public transit. We demonstrate equity implications of the GHG accounting framework used for carbon pricing.