Green Car Congress

DECEMBER 27, 2020

Less traffic on the roads during the first COVID-19 lockdown in the UK led to a reduction in air pollution but may have caused potentially damaging surface ozone levels to rise, according to a new study led by researchers at the University of York. —Professor Lee.

Ozone 397

Ozone Pollution 2020 2015 397

Green Car Congress

SEPTEMBER 27, 2015

The study found that 60% of the winter primary hydrocarbon hydroxyl radical reactivity in London is from those diesel-related hydrocarbons; the authors predicted that the longer-chain HCs contribute up to 50 % of the ozone production potential in London. Dunmore et al. Dunmore et al. Dunmore et al.

London 150

London Pollution Diesel Emissions 150

Green Car Congress

JANUARY 8, 2023

Assessing the Impact of Non-exhaust Emissions from Traffic on the Asthmatic Airway (IONA) ,” led by Chris Griffiths, Queen Mary University of London. and PM 10 , including of NTP and TP emissions, at key selected London trial sites. Establish a source apportioned time series of PM 2.5

Emissions 353

Emissions Pollution Exhaust London 353

Green Car Congress

APRIL 27, 2011

The London Congestion Charging Scheme (CCS)—which charged for travel into central London and reduced traffic volume ( earlier post )—has shown little evidence that it improved air quality as well, according to Part I of a new study published by the Health Effects Institute (HEI).

London 299

London Charging Pollution Diesel 299

Green Car Congress

AUGUST 9, 2012

In California’s Los Angeles Basin, levels of volatile organic compounds (VOCs) pollutants have decreased by about 98% since the 1960s, even as area residents now burn approximately three times as much gasoline and diesel fuel. CO2 ratio for this flight track segment decreased from 24.5 ppbv/ppmv to 10.7 Source: Warneke et al. Warneke, C.,

Los Angeles 285

Los Angeles Gasoline Ozone 2002 285

Green Car Congress

MARCH 22, 2018

The transport and transformation of plumes from selected European and Asian major population centers (MPCs) will now be investigated with special focus on the rate of formation of ozone and aerosols. In Asia, in particular, high temperatures, humidity, solar radiation and the frequency of storms play a major role.

Emissions 268

Emissions Taiwan Asia Ozone 268

Cars That Think

JULY 20, 2021

To find the upside of emergencies, we first looked at the economic effects of a tidy little crisis, a two-day strike that partially disrupted service of the London Underground in 2014. London commuters found better routes, and Icelandic young people got more schooling and found better places to live.

Chad 98

Chad London Iceland Ozone 98