Nitrogen Oxides emissions

MQT on 2013-05-22
Session date: 
May 22, 2013
Question By: 
Jenny Jones
City Hall Greens
Asked Of: 
The Mayor


With reference to 0940/2013 you state that Nitrogen Oxides emissions are down by 20 per cent. Are these figures based on measured or modelled concentrations? Does this estimate include all the predicted reductions which flow from the impact of the Euro standards on emissions from diesel cars produced since 2000?


Answer for Nitrogen Oxides emissions

Answer for Nitrogen Oxides emissions

Answered By: 
The Mayor

The NOx emission figure referenced has been calculated from the latest version of the London Atmospheric Emissions Inventory (LAEI). This version of the LAEI uses the latest emissions factors issued by DEFRA last year to reflect the lower than expected impact of Euro standards in reducing NOx emissions from diesel vehicles.