When different transport modes were standardized to HKD 1 million value added in 2012 i.e. the same economic benefit, it Beta-Lapachone was found that air freight produced more GHG than sea freight (790.4 vs. 421.1) but required a substantial less amount of work done in terms of kilotonne-km than sea freight (832 vs. 34,805).
4.3. Sensitivity analysis of GHG emissions using Monte Carlo simulations and scenario analysis
According to the latest annual report published by the Airport Authority of Hong Kong (2013), 402 kilotonnes of air cargo were transported between Hong Kong and mainland China (mostly to Shanghai Pudong International Airport). If 50 percent of this cargo movement i.e. 201 kilotonnes was transported between Hong Kong and Shanghai in mainland China by sea, land on trucks, or land on trains, 194–226 kilotonnes of CO2-eq emission can be reduced (see Table 6). More specifically, the reduction of GHG emissions was 97, 110, or 113 kilotonnes of CO2-eq per 100 kilotonnes of cargo changing from air transport to land on trucks, land on trains, or sea transport, respectively.