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Cheshire CO2 Emissions Map

The latest CO2 map for Cheshire has been prepared by Conal Kearney (Environmental Monitoring Officer for Cheshire County Council) and relates to data for 2000. No full data is yet available after this date. The work has been prepared to help the CREI, but is an element of the Cheshire Community Strategy.

The emissions database is held on the SMHI Airviro software and was initially complied to assess ambient air pollution levels. The software combines the emissions with meteorological and topographical data to calculate ground level concentrations. The emissions inventory was then extended to include greenhouse gases, namely carbon dioxide and methane, to produce maps of emissions over the County. The carbon dioxide map is a spatial representation of gases actually emitted from within the Cheshire County Council boundary and does not included emissions from Cheshire energy usage that was sourced externally.

The emission sources that are included are listed below -

  • Roads vehicles - extensive road traffic count data is available throughout the County. Includes breakdown of vehicle types and speeds. UK Emission Factors Database gives emission factors for vehicle types travelling at different speeds. Where no data traffic was available, i.e. minor roads, typical data for that type of road was used.
  • Rail traffic - data on numbers and types of engines from Railtrack were combined with emissions factors given for each type of engine.
  • Shipping movements for Ellesmere Port are given on the internet via the National Environment Technology Centre (NETCEN)
  • Part A industrial processes - Environment Agency Emissions Inventory gives the total annual emissions for all processes under their authorisation
  • Part B industrial processes - smaller processes air emissions are monitored by the district authorities
  • Domestic & commercial gas combustion - Transco gas use data is used and then combined with emission factors based on fuel usage
  • Domestic combustion of coal, smokeless solid fuels, oil and wood is given on a 1 kilometre grid basis via the internet (NETCEN)
  • Public sector combustion - Cheshire County Council properties fuel consumption is available from Property Management
  • Open landfill gas emissions data estimated by the Environment Agency.
  • Livestock - national statistics on livestock numbers used to estimate methane emissions (No CO2 emissions)
On the map the emissions are aggregated into 500 metre square grids for easier viewing. Carbon dioxide levels are calculated in terms of the standard method of annual weight of Carbon emitted.
The map shows emissions for 2000 and will be updated for later years when activity data becomes available.
For further information on the CO2 model contact Conal on 01244 603149.
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