Torbirn Carlquist

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Urban Audit data and indicators

• Torbiörn Carlquist

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Content of my talk

• Data for 2001
• Historical data for 1991 and 1996
• New data collection for 2004
• Spatial units
• Large City Audit

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Data for 2001

• Statistical domains covered
• Variables
• Indicators
• Spatial units

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Average response rates by theme
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Urban Audit dataset

• 336 variables (raw data) and 283 Indicators
  (derived data)
• For 284 cities in 28 European countries
  (including Turkey)
• Reference year 2001 if available, otherwise any
  year in the period 1999 - 2003

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Variables sent by country (percent)
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Core city and LUZ per country 2001
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Response rates for sub-city districts
Problem area !
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Response rates (histogram)Maximum 258 cities
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Historical data collection

• Pilot study
• Reference years
• Variables

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Urban Audit 1 - pilot phase

• Organised by DG REGIO
• Data collected by external contractor
• Reference periods 1981, 1991
• Data not kept!

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Reference periods historical data

• 1991 if available, otherwise any year in the
  period 1988 1993
• Data were re-collected from NSIs
• 1996 if available, otherwise any year in the
  period 1994 - 1998

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Reduced variable list for 1991, 1996

• 87 variables (raw data) for city level
• 59 variables for LUZ
• 25 variables for SCD

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New data collection 2006

• Task force
• Variables
• Spatial units

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Collection in 2006 - data for 2004

• 339 (336) variables (raw data) and 406 (283)
  indicators (derived data)
• 24 of the variables are available within
  Commission
• Reference year 2004 if available, otherwise any
  year in the period 2003 - 2005

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Variables 2006
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Comparison to the current dataset
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Variables for 2004 by source
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Variables by domain 2001 - 2004
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Spatial units (1)

• Core city
• Political unit commune, Stadt, municipio etc.
• Larger urban zone (LUZ)
• Approximation of the Functional Urban Area
• NUTS 3 or LAU 1 or LAU 2
• Sub-city districts (neighbourhood, SCD)
• 5 000 40 000 inhabitants internal homogeneity

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Spatial units (2)

• SCD with 2 levels
• To allow large city districts to be represented
• Kernel
• Used in a few cases where the city is underbound
• Allows comparison London-Paris at 3 levels
• Country level
• For comparison of cities with the whole country

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UA population / total population 2001
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Considerations..

• when selecting additional Urban Audit cities
• Geographical spread
• Absolute number of cities in each country
• Willingness to cooperate
• Our budget

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Spatial units 2004

• Core city (299 cities in EU-25)
• Larger urban zone (LUZ) - 191 variables
• Improvements of LUZ in several countries by
  taking account of commuting data from the 2001
  census
• Sub-city districts (neighbourhood, SCD) - 52
  variables
• Kernel (8, up from 2) all city variables
• Added Athina, Dublin, Helsinki, København,
  Lisboa, Stockholm
• Kernels should have SCD covering the whole
  territory
• National level - 249 variables

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Large City Audit 2004

• All other cities gt100 000 inhabitants
• 222 LCA cities identified in EU-25
• Only city level
• Reduced variable list

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Cities with more than 100 000 inhabitants

• To have a complete set of Urban Audit statistics
  for all cities above 100 000 inhabitants would
  add considerable value added to the UA dataset
• There are in EU-25 222 such cities that are not
  included in the 2006 Urban Audit
• A complete data collection of all 300 variables
  seems out of the question
• Reduced data set of 54 core variables

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Cities gt 100 000 inhabitants, not included in
the Urban Audit but in Larger City Audit
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Thanks for listening !

• Any Questions ?