Tim has just had a new paper published in the journal Transportation Research Part D: Transport and Environment.
The paper on 'Comparing and presenting city-level transportation CO2 emissions using GIS' is written with ex-UWE colleagues Owen Waygood and Erel Avineri based on work undertaken as part of the EU Framework 7 CATCH project (http://www.carbonaware.eu/)
The full reference is:
Edward Owen D. Waygood, Tim Chatterton, Erel Avineri, Comparing and presenting city-level transportation CO2 emissions using GIS, Transportation Research Part D: Transport and Environment, Volume 24, October 2013, Pages 127-134, ISSN 1361-9209
The paper can be found here:
http://www.sciencedirect.com/science/article/pii/S136192091300093X