London emissions study, pencilled in for 2017 release, may quantify sources such as diesel transport refrigeration units for â€˜the first timeâ€™
Data on emissions from auxiliary engines â€“ such diesel transport refrigeration units â€“ is being considered for inclusion in a London air quality study likely to be published in 2017, the Mayor has confirmed.
The London Atmospheric Emissions Inventory (LAEI) study, carried out by Kingâ€™s College London, is essentially a database with information on emissions from all sources of air pollutants in Greater London. The latest LAEI is currently being finalised for publication later this year.
And, while the London Mayor declined to do so for the upcoming LAEI study, he suggested information on emission sources such as auxiliary engines could be included in the following study, pencilled in for release in two yearsâ€™ time.
The Mayor of London, Boris Johnson, said: â€œGiven the complexity of quantifying and incorporating emissions sources it is not possible at this stage to add include auxiliary engines such as refrigerated transport units. However, my officials are considering how best to do this for the following edition of the LAEI, which is likely to be published in 2017.â€
His comments came in a written response to a question tabled last week (July 15) by London Assembly Member Stephen Knight, who had called on the Mayor to include nitrogen oxide and particulate matter emissions data from auxiliary engines in the LAEI study.
Auxiliary engines, which are generally diesel powered and used on trucks and vans to keep goods cool, are currently unregulated, which UK engineering company Dearman recently claimed makes such engines â€œdisproportionately pollutingâ€, emitting 163 tonnes of NOx onto the capitalâ€™s streets each year (see AirQualityNews.com story).
Liberal Democrat Mr Knight commented:
â€œAuxiliary engines on delivery vehicles clearly have a serious impact on Londonâ€™s air quality and it isÂ time the Mayor took firm action to bring these dangerous emissions under control. These transport refrigeration units are a â€˜hidden polluterâ€™ and their emissionsÂ must now be properly measured and controlled.â€
London-based Dearman â€“ which develops zero emission transport refrigeration units â€“ welcomed the Mayorâ€™s comments, explaining that should data on auxiliary engines be included in the 2017 study, it would be the first time that a UK governmental body has measured and reported on emissions from secondary vehicle engines.
Dr Tim Fox, international ambassador for Dearman, said: â€œItâ€™s a disgrace that 25 people die prematurelyÂ every dayÂ due to poor air quality in London.Â As we speak thousands of refrigerated vehicles are delivering food to shops, restaurants and our homes. They may go unnoticed, but every transport refrigeration unit also delivers large amounts of dangerous pollution onto our streets.
â€œThe Mayorâ€™s response shows a small but significant shift in attitude towards these disproportionate polluters.Â We could make a sizeable impact on both NOx and PM pollution and improve the quality of the air we breathe, by bringing transport refrigeration units up to modern emissions standards â€“ or even better making them zero emission. That small change could have a very big impact.â€