How do I calculate the amount of transport in the market?
The market represents activities between the producers and the consumers of the reference product. Among other flows the market contains the transport between the producers and the consumers of the product.
For example the market for papaya (see the screenshot of the market from the ecoquery). Contains 0.017 metric ton*km of "transport, freight, aircraft with reefer, cooling".
In order to calculate this value the following data are needed:
The final amount of transport in ton*km needed for an average 1kg of papaya by air (tAIR) is than calculated as follows:
So while some papaya is not transported by air at all. Some is and by a great distance. The amount of air transport in the global market represents the amount of transport for an average 1 kg of papaya. These values change significantly when specific scenario is modelled, e.g. when calculating the impacts of papaya consumed in Europe.
What does the version number of the database mean?
What is an activity in ecoinvent version 3?
What are global background activities and where do they come from?
What is a market and how is it created?
In which situations are direct activity links used?
Why is the reference product of the treatment activities negative?
Why is the amount of the reference product changing?
What is linking and what happens during the linking process? Attributional System Model
What is linking and what happens during the linking process? Consequential System Model
What is allocation at the point of substitution (APOS)?
What do the shortcuts, such as CH, RER, RoW and GLO mean?
The ecoinvent database in Environmental Product Declarations (EPDs)
What does it mean, when the production volume of an activity is zero?
Why is the “Allocation, default” system model not available in the ecoquery anymore?
What is the Rest-of-the-World (RoW) and how is it calculated?
Why is the LCIA score of a certain product negative?
What are the UUID numbers and how do they work?
How to interpret the uncertainty fields in ecoinvent?
What are the LCIA methods ecoinvent is publishing the impact assessment results for?
APOS: why do I have carrots on my recycled aluminium?