Figure
Freight transport volumes and GDP (EEA-32 excluding Liechtenstein)
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Methodology:
Sum of road, rail and inland waterway freight data from Eurostat
Dataset selection
EUROSTAT (Source 1) data has been used where it is available. Where Eurostat data is missing, the following procedure was used to determine how to fill the gap:1. DG TREN (Source 2) data is used where available, unless:
2. Inserting the DG TREN data would lead to a large change that is unrealistic. In this case:
3. The trend of known values for EUROSTAT is compared to the trend of known values for DG TREN. If known values match closely, the DG TREN data is used.
4. If the known values do not match closely, it is assumed that there is a systematic difference between DG TREN and EUROSTAT data, and so DG TREN data is not used.
5. Instead, gapfilling procedures outlined below are used:
Gapfilling procedures
Where data is missing or different data sources have been used across the time series and this leads to large changes which are unrealistic, gap filling procedures have been employed to ensure a complete dataset and to improve the reliability of the trends found.The approach used is in accordance with that used for greenhouse gas inventories under the EU MM
Where appropriate extrapolation of data has been used. This can be divided into 2 types:
1. Linear trend extrapolation - this is used where there is a smooth trend in the time series i.e. No large annual variations.
In general the linear trend extrapolation is based on the most recent 10-year-period; however, if only a limited number of years were available
or a more consistent time series was available for specific years then these years were used for the linear trend extrapolation.
2. Use of previous year’s values were used in case of large annual variations (dips and jumps)
because in this case the previous year value is considered to be as robust as any other value.
If emission estimates are not available for years within the time series, linear trend interpolation is used-
Rights:
- EEA standard re-use policy: unless otherwise indicated, re-use of content on the EEA website for commercial or non-commercial purposes is permitted free of charge, provided that the source is acknowledged (https://www.eea.europa.eu/legal/copyright). Copyright holder: European Environment Agency (EEA).
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Owners:
- European Environment Agency (EEA)
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Figure type:
- Graph
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For references, please go to https://www.eea.europa.eu/data-and-maps/figures/freight-transport-volumes-and-gdp-1 or scan the QR code.
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