Evidence of Heating-Dominated Urban NO_<i>x</i> Emissions.

ABSTRACT: Road transport NO_x emissions in many high-income countries have steadily reduced due to improved exhaust after-treatment technology. However, ambient concentrations of NO₂, O₃ and PM_2.5 continue to exceed World Health Organization guidelines in many cities globally. The megacity of London has taken an international lead in mobility interventions through the use of low-emission zones. Using long-term air pollution flux measurements made from a communications tower, we show that the largest source of NO_x emissions in central London has transitioned from road transport to space heating. Observations and supporting consumption/mobility data indicated that natural gas combustion in boilers was responsible for 72 ± 17% of NO

SUBMITTER: Cliff SJ 

PROVIDER: S-EPMC11912318 | biostudies-literature | 2025 Mar

REPOSITORIES: biostudies-literature