1. Proximity to airports via the road network
Hugo Poelman
REGIOgis
Working Party GIS for Statistics, Luxembourg, 04/03/2008

2. Explore methodology at EU scale Test and define data requirements
04/03/2008
Aims of the analysis
Provide an indicator of availability and accessibility of passenger flights
Based on Eurostat statistical data and several georeferenced datasets
Regions (NUTS3) or other territories as reporting units
Explore methodology at EU scale
Test and define data requirements

3. Available passenger flights
04/03/2008
Main data sources
Airport locations
Available passenger flights
Accessibility of the airports, via road network
Distribution of population over the territory

4. Main airports and secondary airports
04/03/2008
Airport locations
GISCO point layer
Main airports and secondary airports
Airport ICAO codes compatible with flight data disseminated by Eurostat

5. Eurostat data sets: annual data
04/03/2008
Passenger flights
Eurostat data sets: annual data
Main airports: number of commercial passenger flights
Other (secondary) airports: total number of commercial flights
Approximation of the number of passenger flights = 95% of total number of commercial flights
Data expressed as daily numbers ( / 365 )

6. Road network EuroGlobalMap roads
04/03/2008
Road network
EuroGlobalMap roads
Maximum speed by country and road category

7. Road network Influence of the relief
04/03/2008
Road network
Influence of the relief
Steeper slopes affecting the speed through the network
Slope based on GISCO DEM

8. Road network Proxy for congestion
04/03/2008
Road network
Proxy for congestion
Crossing main urban areas (Urban Morphological Zones) affects speed

9. Accessibility to airports
04/03/2008
Accessibility to airports
“Service areas” around airports
Max. 90 minutes driving time by road

10. Managing the accessibility areas (1)
04/03/2008
Managing the accessibility areas (1)
Service areas around airports overlap in many places
Each service area is attached to a specific airport, and related to the number of flights available

11. Managing the accessibility areas (2)
04/03/2008
Managing the accessibility areas (2)
Numbers of flights need to be summed in the overlapping areas
All service areas are merged in a raster

12. Population distribution
04/03/2008
Population distribution
Raster-based population
JRC population disaggregation grid
Register-based population for Sweden and Finland (to overcome distorted distribution in sparsely populated areas)

13. Aggregated accessibility indicator (1)
04/03/2008
Aggregated accessibility indicator (1)
NUTS-3 regions as reporting units
At cell level: population * flights
At regional level: Population-weighted average number of accessible passenger flights

14. Aggregated accessibility indicator (2)
04/03/2008
Aggregated accessibility indicator (2)
Method allows for calculation of aggregated values for other territories
Example: mountain massifs

15. Results at European scale
04/03/2008
Results at European scale

16. Proximity to cities and urban/rural typology
04/03/2008
Related analysis
Proximity to cities and urban/rural typology

17. Perspectives for further analysis
04/03/2008
Perspectives for further analysis
Results of the analysis are depending upon the quality and availability of several data sources
Different areas for improvement and/or further analysis can be identified

18. Density of the road network (1)
04/03/2008
Density of the road network (1)
EuroGlobalMap roads
Additional EuroRegional Map roads

19. Density of the road network (2)
04/03/2008
Density of the road network (2)
Extent of the service areas depends on the density of the road network
Need for harmonised, well-defined Europe-wide network
Speed attributes of road segments?

20. Use of digital terrain model
04/03/2008
Use of digital terrain model
Slope impedances on network segment speed are dependent on the resolution of the digital elevation model
Use of a more dense road network to be combined with use of a more precise slope raster

21. Population distribution
04/03/2008
Population distribution
Analysis should be based upon state-of-the-art information on population distribution
Population disaggregation grid remains an essential tool, but…
Use of “real” grid-based population data can help to improve results
Timeliness, completeness, harmonised spatial reference !!

22. Comparisons over time when longer series will become available
04/03/2008
Flight data
Typology of flights could be implemented, e.g. flights by length, intra- or extra-EU flights, etc.
Analysing different categories of flights expected to result in different spatial patterns
Comparisons over time when longer series will become available

23. Applications to other themes ?
04/03/2008
Applications to other themes ?
Similar analysis method might be used for accessibility analysis related to other services
Education, health, rail transport, …
Feasibility depends on data sources…
Location information based on harmonised and comparable definitions
EU-wide completeness increases interest in analysis
Features should be characterised by relevant attributes related to the importance/role of the services

24. REGIOgis More information ? Hugo Poelman hugo.poelman@ec.europa.eu
04/03/2008
More information ?
REGIOgis
Hugo Poelman
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