Well, you have to consider that whatever time it would take you to get to the train station, it would also take you to get to the air port, assuming that they are located in similar places, which is false. Most airports are more remote because of the noise, so it would take longer to get there. Plus whatever time you add to the total makes the difference in time even more marginal in comparision to the total, favoring the trains.
So, the chart is in fact biased, in favor of flight.
As to the climate factor, engineers are quite clever people. Railway beds can be built in such a way that they are far less sensitive to frost heaving.
In other news, I am now a preferred customer of Deutsch Bahn. Now while I wait the 10-15 minutes for my train, if I arrive early, I get free coffee in their lounges.
So, the chart is in fact biased, in favor of flight.
As to the climate factor, engineers are quite clever people. Railway beds can be built in such a way that they are far less sensitive to frost heaving.
In other news, I am now a preferred customer of Deutsch Bahn. Now while I wait the 10-15 minutes for my train, if I arrive early, I get free coffee in their lounges.