Ozone

Order of the National Green Tribunal regarding ozone pollution across urban India, 21/03/2025

Order of the National Green Tribunal in the matter of News Item titled “CSE report finds dangerous increase in ozone pollution across urban India” appearing in Down to Earth dated 06.08.2024. The Principal Bench of the NGT heard the matter on March 21, 2025. In the original application, registered suo …

Delhi is reeling under high levels of deadly ozone: CSE analysis

The latest CSE analysis finds that Delhi is witnessing an unprecedented ozone build-up. Ozone levels have exceeded the standards proposed by MoEF almost everyday in April. It recommends notification of the proposed air quality standards without any further delay to implement control strategies for ozone-forming gases. In April, ozone levels …

Steps to phase out harmful chemical from garment sector

The Bangladesh Garments Manufacturers and Exporters Association (BGMEA) and Department of Environment (DOE) on Monday have launched a joint initiative to phase out the use of carbon tetrachloride (CTC) from the sector by the end of this year. CTC, a member of eight Ozone Depleting Substances (ODS) family with more …

U.S. To Rely More On Scientists For Air Rules: EPA

The U.S. government will reverse a Bush administration policy and increase the role of scientists in setting air standards for criteria pollutants harmful to human health, Lisa Jackson, the administrator of the Environmental Protection Agency, said on Thursday. Jackson said the EPA will reinstate the role of a policy document …

US Says Wants To Cut Potent HFC Greenhouse Gases

The United States intends to work toward reducing emissions of potent greenhouse gases found in refrigerators and air conditioning systems but has not yet decided which international venue to use to advance the issue, US officials said on Monday. In a letter to a UN agency, the US State Department …

A cohort study of traffic-related air pollution and mortality in Toronto, Ontario, Canada

Chronic exposure to traffic-related air pollution (TRAP) may contribute to premature mortality, but few studies to date have addressed this topic. This study assessed the association between TRAP and mortality in Toronto, Ontario, Canada.

Particulate pollution in Asia - Part 1: multi-pollutant modeling of sources, contributions, & health impacts

Asia's increasing population and economic growth has meant that the energy demand is doubling every 10 years, which is more than twice the world average, resulting in an increased risk of human exposure to higher air pollution from fossil fuel burning. In countries, where more than third of the population …

Proposal by Island Nations aims to solve 1/3 of climate change problem under ozone treaty

The IGSD press release on a joint proposal by Micronesia and Mauritius for phasing down HFCs which could otherwise be responsible for 1/3rd of total climate emissions by 2040. The U.S. is also considering submitting its own proposal on HFCs to the Montreal Protocol. Two island nations, Micronesia and Mauritius, …

China To Meet 2010 Pollution Targets: Minister

China is on track to meet its pollution targets by 2010 even though it is still struggling to deal with its coal-dependent energy sector, the country's environment minister has reported to parliament. By the end of 2010, China aims to cut the emissions of major pollutants by 10 percent compared …

Growing Antarctic Sea Ice Linked To Damaged Ozone

An expansion of sea ice around Antarctica is linked to a hole in the ozone layer high in the atmosphere, according to a study on Tuesday that helps clear up a mystery about global warming. The findings, by scientists at the British Antarctic Survey (BAS) and the U.S. space agency …

Even unfriendly countries unite to reduce ODS

The Sub Regional Workshop on Ozone Depleting Substances (ODS) Phase Out in Military Applications would be a stepping stone for a wider environment military network in Sri Lanka, said former Executive Secretary National Protocol Secretariat, UNEP K. Madhava Sharma. Sharma who is also the Member of Technology and Economic Assessment …

Towards cleaner air

The government has decided to do something important about vehicular emissions that have reached highly dangerous levels. Federal Ministry of Environment told the National Assembly on Monday that all petrol-run vehicles would be required to comply with Euro-II emission standards with effect from July. The deadline for diesel vehicles' compliance …

A comparison of North American and Asian exposureresponse data for ozone effects on crop yields

Modelling-based studies to assess the extent and magnitude of ozone (O3) risk to agriculture in Asia suggest that yield losses of 5

BME estimation of residential exposure to ambient PM10 and ozone at multiple time scales

Long-term human exposure to ambient pollutants can be an important contributing or etiologic factor of many chronic diseases. Spatiotemporal estimation (mapping) of long-term exposure at residential areas based on field observations recorded in the U.S. Environmental Protection Agency

Evaluation of physiological, growth and yield responses of a tropical oil crop (Brassica campestris L. var. Kranti)

A field study was conducted to evaluate the impact of ambient ozone on mustard (Brassica campestris L. var. Kranti) plants grown under recommended and 1.5 times recommended NPK doses at a rural site of India using filtered (FCs) and non-filtered open top chambers (NFCs). Ambient mean O3 concentration varied from …

Contribution of vehicular activity to air pollution in Hyderabad, India: Measurements, chemistry and analysis

In this paper, an analysis of data from continuous ambient air monitoring station in Hyderabad is reported to better understand daily and seasonal trends of particulates and chemistry of ozone pollution in the atmosphere. The objective of the paper has been to investigate the contribution levels of transport emissions to …

Petrol vapour recovery to become mandatory

Draft new EU legislation that would limit harmful vapour emissions from petrol pumps was proposed on 4 December by the European Commission. Petrol vapour contains benzene, which is known to cause cancer, and contributes to the formation of ground-level ozone, one of the air pollutants that is most damaging to …

Climate change and India: some major issues and policy implications

This working paper by the Ministry of finance examines issues of climate change related to development and finance. Clarifies India

Ozone in wastewater treatment

Ozone technology has been used for the past two decades or more. It is, however, only now that its use in wastewater treatment has been recognized.

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