A spatial and fleet disaggregated approach to calculating the NOX emissions inventory for non-road mobile machinery in London

The latest London atmospheric emissions inventory (2016), which is calculated using fuel consumption and construction employment, estimates that, the sector contributes 34% of total PM 10 (the largest source), 7% NO X (5 th source). These contribute significantly to 2 2.5 pollution problems in London, a major concern for public health. Real-world emission factors from tail-pipe measurements were coupled register machinery, develop novel ‘spatial fleet disaggregated’ London. This method estimated 1,294 tonnes 2018 1,578 2019 non-road mobile machinery sector, approximately 55% 45% lower respectively, than current (2016) (2850 tonnes). However, compared inventory, new are higher central under-estimating importance this source fleet-disaggregated enables potential policy be developed by focusing on high-emitters registered database. As demonstration, two abatement scenarios modelled – first: retrofitting older generators with SCR-DPF system, 53% reduction overall was predicted all NRMM; second: accelerating excavator fleet-turnover more modest 2-tonne NRMM •Real-world calculating •1294 2016 LAEI •This